Tacker: ETSI MANO NFV Orchestrator / VNF Manager. See https://wiki.openstack.org/wiki/Tacker
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How to use Mgmt Driver for deploying Kubernetes Cluster

Overview

1. Mgmt Driver Introduction

Mgmt Driver enables Users to configure their VNF before and/or after its VNF Lifecycle Management operation. Users can customize the logic of Mgmt Driver by implementing their own Mgmt Driver and these customizations are specified by "interface" definition in NFV-SOL001 v2.6.1. This user guide aims to deploy Kubernetes cluster via Mgmt Driver which is customized by user.

If you want to deploy Pods on different physical compute server, this user guide provide a way to support it. Tacker can deploy worker nodes of Kubernetes cluster on different physical compute server, and then deploy Pods with anti-affinity rule on this cluster. You can refer to chapter Hardware-aware Affinity For Pods on Kubernetes Cluster for details.

2. Use Cases

In the present user guide, two cases are supported with the sample Mgmt Driver and VNF Package providing two deployment flavours in VNFD:

  • simple: Deploy one master node with worker nodes. In this case, it supports to scale worker node and heal worker node.
  • complex: Deploy three (or more) master nodes with worker nodes. In this case, it supports to scale worker node and heal worker node and master node.

In all the above cases, kubeadm is used for deploying Kubernetes in the sample script.

1. Simple : Single Master Node

The simple Kubernetes cluster contains one master node as controller node. You can deploy it use the sample script we provided. The diagram below shows simple Kubernetes cluster architecture:

+-------------------------------+
|      Kubernetes cluster       |
|       +---------------+       |
|       |  +---------+  |       |
|       |  | k8s-api |  |       |
|       |  +---------+  |       |
|       |  +---------+  |       |
|       |  |  etcd   |  |       |
|       |  +---------+  |       |
|       |   Master VM   |       |
|       +---------------+       |
|                               |
|                               |
|  +----------+   +----------+  |
|  | +------+ |   | +------+ |  |
|  | | Pod  | |   | | Pod  | |  |
|  | +------+ |   | +------+ |  |
|  | Worker VM|   | Worker VM|  |
|  +----------+   +----------+  |
|                               |
+-------------------------------+

2. Complex : High Availability (HA) Configuration

Kubernetes is known for its resilience and reliability. This is possible by ensuring that the cluster does not have any single points of failure. Because of this, to have a highly availability (HA) cluster, you need to have multiple master nodes. We provide the sample script which can be used to deploy an HA Kubernetes cluster. The diagram below shows HA Kubernetes cluster architecture:

+-----------------------------------------------------------+
|            High availability (HA) Kubernetes cluster      |
| +-------------------------------------+                   |
| |                                     |                   |
| | +---------------+      +---------+  |                   |
| | | VIP - Active  |      | HAProxy |  |                   |
| | |               |----->| (Active)|------+               |
| | |(keep - alived)|      +---------+  |   | +-----------+ |
| | |               |      +---------+  |   | |           | |
| | +---------------+      | k8s-api |<-----+ |           | |
| |            ^           +---------+  |   | |           | |
| |            |           +---------+  |   | |           | |
| |   VRRP     |      +--->|  etcd   |  |   | |           | |
| |            |      |    +---------+  |   | |           | |
| |            |      |     Master01 VM |   | |           | |
| +------------|------|-----------------+   | |           | |
|              |      |                     | |           | |
| +------------|------|-----------------+   | |           | |
| |            v      |                 |   | |Worker01 VM| |
| | +---------------+ |    +---------+  |   | |           | |
| | | VIP - Standby | |    | HAProxy |  |   | +-----------+ |
| | |               | |    |(Standby)|  |   |               |
| | |(keep - alived)| |    +---------+  |   |               |
| | |               | |    +---------+  |   |               |
| | +---------------+ |    | k8s-api |<-----+               |
| |            ^      |    +---------+  |   |               |
| |            |      |    +---------+  |   |               |
| |   VRRP     |      +--->|  etcd   |  |   | +-----------+ |
| |            |      |    +---------+  |   | |           | |
| |            |      |     Master02 VM |   | |           | |
| +------------|------|-----------------+   | |           | |
|              |      |                     | |           | |
| +------------|------|-----------------+   | |           | |
| |            v      |                 |   | |           | |
| | +---------------+ |    +---------+  |   | |           | |
| | | VIP - Standby | |    | HAProxy |  |   | |           | |
| | |               | |    |(Standby)|  |   | |           | |
| | |(keep - alived)| |    +---------+  |   | |           | |
| | |               | |    +---------+  |   | |Worker02 VM| |
| | +---------------+ |    | k8s-api |<-----+ |           | |
| |                   |    +---------+  |     +-----------+ |
| |                   |    +---------+  |                   |
| |                   +--->|  etcd   |  |                   |
| |                        +---------+  |                   |
| |                         Master03 VM |                   |
| +-------------------------------------+                   |
+-----------------------------------------------------------+

Mgmt Driver supports the construction of an HA master node through the instantiate_end process as follows:

  1. Identify the VMs created by OpenStackInfraDriver (which is used to create OpenStack resources).
  2. Invoke the script to configure for HAProxy (a reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications) to start signal distribution to Master nodes.
  3. Install all Master-nodes first, followed by Worker-nodes by invoking the script setting up the new Kubernetes cluster.

Preparations

If you use the sample script to deploy your Kubernetes cluster, you need to ensure that the virtual machine (VM) you created on the OpenStack can access the external network. If you installed the tacker service through devstack, the following is an optional way to set the network configuration.

Note

In case of installed using devstack, please execute all the following commands under the stack user. You can use sudo su stack command to change your user.

1. OpenStack Router

1. Create an OpenStack Router

To ensure your VMs can access the external network, a router between public network and internal network may be required. It can be created by OpenStack dashboard or cli command. The following steps will create a router between the public network and the internal net0 network. The cli command is shown below:

$ openstack router create router-net0
+-------------------------+--------------------------------------+
| Field                   | Value                                |
+-------------------------+--------------------------------------+
| admin_state_up          | UP                                   |
| availability_zone_hints |                                      |
| availability_zones      |                                      |
| created_at              | 2021-02-17T04:49:09Z                 |
| description             |                                      |
| distributed             | False                                |
| external_gateway_info   | null                                 |
| flavor_id               | None                                 |
| ha                      | False                                |
| id                      | 66fcada3-e101-4136-ad5a-ed4f0f2a7ac1 |
| name                    | router-net0                          |
| project_id              | 4e7c90a9c086427fbfc817ed6b372d97     |
| revision_number         | 1                                    |
| routes                  |                                      |
| status                  | ACTIVE                               |
| tags                    |                                      |
| updated_at              | 2021-02-17T04:49:09Z                 |
+-------------------------+--------------------------------------+
$ openstack router set --external-gateway public router-net0
$ openstack router show router-net0
+-------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field                   | Value                                                                                                                                                                                                                           |
+-------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| admin_state_up          | UP                                                                                                                                                                                                                              |
| availability_zone_hints |                                                                                                                                                                                                                                 |
| availability_zones      | nova                                                                                                                                                                                                                            |
| created_at              | 2021-02-17T04:49:09Z                                                                                                                                                                                                            |
| description             |                                                                                                                                                                                                                                 |
| distributed             | False                                                                                                                                                                                                                           |
| external_gateway_info   | {"network_id": "70459da3-e4ba-44a1-959c-ee1540bf532f", "external_fixed_ips": [{"subnet_id": "0fe68555-8d3a-4fcb-83e2-602744eab106", "ip_address": "192.168.10.4"}, {"subnet_id": "d1bebebe-dde4-486a-8bca-eb9939aec972",        |
|                         | "ip_address": "2001:db8::2f0"}], "enable_snat": true}                                                                                                                                                                           |
| flavor_id               | None                                                                                                                                                                                                                            |
| ha                      | False                                                                                                                                                                                                                           |
| id                      | 66fcada3-e101-4136-ad5a-ed4f0f2a7ac1                                                                                                                                                                                            |
| interfaces_info         | []                                                                                                                                                                                                                              |
| name                    | router-net0                                                                                                                                                                                                                     |
| project_id              | 4e7c90a9c086427fbfc817ed6b372d97                                                                                                                                                                                                |
| revision_number         | 3                                                                                                                                                                                                                               |
| routes                  |                                                                                                                                                                                                                                 |
| status                  | ACTIVE                                                                                                                                                                                                                          |
| tags                    |                                                                                                                                                                                                                                 |
| updated_at              | 2021-02-17T04:51:59Z                                                                                                                                                                                                            |
+-------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
$ openstack router add subnet router-net0 subnet0
$ openstack router show router-net0
+-------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field                   | Value                                                                                                                                                                                                                           |
+-------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| admin_state_up          | UP                                                                                                                                                                                                                              |
| availability_zone_hints |                                                                                                                                                                                                                                 |
| availability_zones      | nova                                                                                                                                                                                                                            |
| created_at              | 2021-02-17T04:49:09Z                                                                                                                                                                                                            |
| description             |                                                                                                                                                                                                                                 |
| distributed             | False                                                                                                                                                                                                                           |
| external_gateway_info   | {"network_id": "70459da3-e4ba-44a1-959c-ee1540bf532f", "external_fixed_ips": [{"subnet_id": "0fe68555-8d3a-4fcb-83e2-602744eab106", "ip_address": "192.168.10.4"}, {"subnet_id": "d1bebebe-dde4-486a-8bca-eb9939aec972",        |
|                         | "ip_address": "2001:db8::2f0"}], "enable_snat": true}                                                                                                                                                                           |
| flavor_id               | None                                                                                                                                                                                                                            |
| ha                      | False                                                                                                                                                                                                                           |
| id                      | 66fcada3-e101-4136-ad5a-ed4f0f2a7ac1                                                                                                                                                                                            |
| interfaces_info         | [{"port_id": "0d2abb5d-7b01-4227-b5b4-325d153dfe4a", "ip_address": "10.10.0.1", "subnet_id": "70e60dee-b654-49ee-9692-147de8f07844"}]                                                                                           |
| name                    | router-net0                                                                                                                                                                                                                     |
| project_id              | 4e7c90a9c086427fbfc817ed6b372d97                                                                                                                                                                                                |
| revision_number         | 4                                                                                                                                                                                                                               |
| routes                  |                                                                                                                                                                                                                                 |
| status                  | ACTIVE                                                                                                                                                                                                                          |
| tags                    |                                                                                                                                                                                                                                 |
| updated_at              | 2021-02-17T04:54:35Z                                                                                                                                                                                                            |
+-------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Through the above command, you can get the gateway ip between the internal net0 network and the external network. Here is 192.168.10.4 in the external_gateway_info. The net0 network's cidr is 10.10.0.0/24.

2. Set Route Rule in Controller Node

According to the gateway ip obtained in step 1., you should add a route rule in controller node of OpenStack. The command is shown below:

$ sudo route add -net 10.10.0.0/24 gw 192.168.10.4

3. Set the Security Group

In order to access the k8s cluster, you need to set the security group rules. You can create a new security group or add the rules to the default security group. The minimum settings are shown below using cli command:

  • get the nfv project's default security group id

    $ auth='--os-username nfv_user --os-project-name nfv --os-password devstack  --os-auth-url http://127.0.0.1/identity --os-project-domain-name Default --os-user-domain-name Default'
    $ nfv_project_id=`openstack project list $auth | grep -w '| nfv' | awk '{print $2}'`
    $ default_id=`openstack security group list $auth | grep -w 'default' | grep $nfv_project_id | awk '{print $2}'`
  • add new security group rule into default security group using the id above

    #ssh 22 port
    $ openstack security group rule create --protocol tcp --dst-port 22 $default_id $auth
    #all tcp
    $ openstack security group rule create --protocol tcp $default_id $auth
    #all icmp
    $ openstack security group rule create --protocol icmp $default_id $auth
    #all udp
    $ openstack security group rule create --protocol udp $default_id $auth
    #dns 53 port
    $ openstack security group rule create --protocol tcp --dst-port 53 $default_id $auth
    #k8s port
    $ openstack security group rule create --protocol tcp --dst-port 6443 $default_id $auth
    $ openstack security group rule create --protocol tcp --dst-port 16443 $default_id $auth
    $ openstack security group rule create --protocol tcp --dst-port 2379:2380 $default_id $auth
    $ openstack security group rule create --protocol tcp --dst-port 10250:10255 $default_id $auth
    $ openstack security group rule create --protocol tcp --dst-port 30000:32767 $default_id $auth

2. Ubuntu Image

In this user guide, Ubuntu image is used for master/worker node. To ensure that Mgmt Driver can access to VMs via SSH, some configurations are required.

1. Download Ubuntu Image

You can download the ubuntu image (version 20.04) from the official website. The command is shown below:

$ wget -P /opt/stack/tacker/samples/mgmt_driver https://cloud-images.ubuntu.com/releases/focal/release/ubuntu-20.04-server-cloudimg-amd64.img

2. Install the libguestfs-tools

If you use the sample script to deploy the Kubernetes cluster, you need to ensure the VM created by your image allows you to login using username and password via SSH. However, the VM created by the ubuntu image downloaded from official website does not allow you to login using username and password via SSH. So you need to modify the ubuntu image. The following is a way to modify the image using guestfish tool or you can modify it using your own way. The way to install the tool is shown below:

$ sudo apt-get install libguestfs-tools
$ guestfish --version
  guestfish 1.36.13

3. Set the Image's Configuration

The guestfish tool can modify image's configuration using its own command. The command is shown below:

$ cd /opt/stack/tacker/samples/mgmt_driver
$ sudo guestfish -a ubuntu-20.04-server-cloudimg-amd64.img -i sh "sed -i 's/lock\_passwd\: True/lock\_passwd\: false/g' /etc/cloud/cloud.cfg"
$ sudo guestfish -a ubuntu-20.04-server-cloudimg-amd64.img -i sh "sed -i '/[ ][ ][ ][ ][ ]lock\_passwd\: false/a\     plain\_text\_passwd\: ubuntu' /etc/cloud/cloud.cfg"
$ sudo guestfish -a ubuntu-20.04-server-cloudimg-amd64.img -i sh "sed -i 's/PasswordAuthentication no/PasswordAuthentication yes/g' /etc/ssh/sshd_config"
$ sha512sum ubuntu-20.04-server-cloudimg-amd64.img
fb1a1e50f9af2df6ab18a69b6bc5df07ebe8ef962b37e556ce95350ffc8f4a1118617d486e2018d1b3586aceaeda799e6cc073f330a7ad8f0ec0416cbd825452

Note

The hash of the ubuntu image is different after modifying, so you should calculate it by yourself. And the value should be written into the sample_kubernetes_df_simple.yaml and sample_kubernetes_df_complex.yaml defined in Create and Upload VNF Package.

3. Set Tacker Configuration

First, copy the sample script that was stored in tacker/samples/mgmt_driver/kubernetes_mgmt.py into the directory of tacker/tacker/vnfm/mgmt_drivers.

$ cp /opt/stack/tacker/samples/mgmt_driver/kubernetes_mgmt.py /opt/stack/tacker/tacker/vnfm/mgmt_drivers/

1. Set the setup.cfg

You have to register kubernetes_mgmt.py in the operation environment of the tacker. The sample script (kubernetes_mgmt.py) uses the mgmt-drivers-kubernetes field to register in Mgmt Driver.

$ vi /opt/stack/tacker/setup.cfg
...
tacker.tacker.mgmt.drivers =
noop = tacker.vnfm.mgmt_drivers.noop:VnfMgmtNoop
openwrt = tacker.vnfm.mgmt_drivers.openwrt.openwrt:VnfMgmtOpenWRT
vnflcm_noop = tacker.vnfm.mgmt_drivers.vnflcm_noop:VnflcmMgmtNoop
mgmt-drivers-kubernetes = tacker.vnfm.mgmt_drivers.kubernetes_mgmt:KubernetesMgmtDriver
...

2. Set the tacker.conf

Then find the vnflcm_mgmt_driver field in the tacker.conf. Add the mgmt-drivers-kubernetes defined in step 1 to it, and separate by commas.

$ vi /etc/tacker/tacker.conf
...
[tacker]
...
vnflcm_mgmt_driver = vnflcm_noop,mgmt-drivers-kubernetes
...

3. Update the tacker.egg-info

After the above two steps, the configuration has not yet taken effect. You also need to execute the setup.py script to regenerate the contents of the tacker.egg-info directory.

$ cd /opt/stack/tacker/
$ python setup.py build
running build
running build_py
running egg_info
writing requirements to tacker.egg-info/requires.txt
writing tacker.egg-info/PKG-INFO
writing top-level names to tacker.egg-info/top_level.txt
writing dependency_links to tacker.egg-info/dependency_links.txt
writing entry points to tacker.egg-info/entry_points.txt
writing pbr to tacker.egg-info/pbr.json
[pbr] Processing SOURCES.txt
[pbr] In git context, generating filelist from git
warning: no files found matching 'AUTHORS'
warning: no files found matching 'ChangeLog'
warning: no previously-included files matching '*.pyc' found anywhere in distribution
writing manifest file 'tacker.egg-info/SOURCES.txt'

Then you can use Mgmt Driver to deploy Kubernetes cluster after restarting the service of tacker and tacker-conductor.

$ sudo systemctl stop devstack@tacker
$ sudo systemctl restart devstack@tacker-conductor
$ sudo systemctl start devstack@tacker

Create and Upload VNF Package

VNF Package is a ZIP file including VNFD, software images for VM, and other artifact resources such as scripts and config files. The directory structure and file contents are defined in NFV-SOL004 v2.6.1. According to NFV-SOL004 v2.6.1, VNF Package should be the ZIP file format with the TOSCA-Simple-Profile-YAML-v1.2 Specifications. In this user guide, the CSAR with TOSCA-Metadata directory is used to deploy Kubernetes cluster.

Note

For more detailed definitions of VNF Package, you can see VNF Package.

1. Directory Structure

The sample structure of VNF Package for both simple case and complex case is shown below.

Note

You can also find them in the samples/mgmt_driver/kubernetes_vnf_package/ directory of the tacker.

The directory structure:

  • TOSCA-Metadata/TOSCA.meta
  • Definitions/
  • Files/images/
  • Scripts/
  • BaseHOT/
  • UserData/
!----TOSCA-Metadata
        !---- TOSCA.meta
!----Definitions
        !---- etsi_nfv_sol001_common_types.yaml
        !---- etsi_nfv_sol001_vnfd_types.yaml
        !---- sample_kubernetes_top.vnfd.yaml
        !---- sample_kubernetes_types.yaml
        !---- sample_kubernetes_df_simple.yaml
        !---- sample_kubernetes_df_complex.yaml
!----Files
        !---- images
                !---- ubuntu-20.04-server-cloudimg-amd64.img
!----Scripts
        !---- install_k8s_cluster.sh
        !---- kubernetes_mgmt.py
!----BaseHOT
        !---- simple
                !---- nested
                        !---- simple_nested_master.yaml
                        !---- simple_nested_worker.yaml
                !---- simple_hot_top.yaml
        !---- complex
                !---- nested
                        !---- complex_nested_master.yaml
                        !---- complex_nested_worker.yaml
                !---- complex_hot_top.yaml
!----UserData
        !---- __init__.py
        !---- k8s_cluster_user_data.py

TOSCA-Metadata/TOSCA.meta

According to TOSCA-Simple-Profile-YAML-v1.2 specifications, the TOSCA.meta metadata file is described in TOSCA-1.0-specification. The files under Scripts directory are artifact files, therefore, you should add their location and digest into TOSCA.meta metadata file. The sample file is shown below:

Definitions/

All VNFD YAML files are located here. In this guide, there are two types of definition files, ETSI NFV types definition file and User defined types definition file.

ETSI NFV provides two types of definition files1 which contain all defined type definitions in NFV-SOL001 v2.6.1. You can download them from official website.

You can extend their own types definition from NFV-SOL001 v2.6.1. In most cases, you need to extend tosca.nodes.nfv.VNF to define your VNF node types. In this guide, sample_kubernetes_df_simple.yaml is used in simple case, sample_kubernetes_df_complex.yaml is used in complex case. The two files can be distinguished by deployment_flavour. The sample files are shown below:

Files/images/

VNF Software Images are located here. These files are also described in TOSCA.meta. The image used for deploying Kubernetes cluster is ubuntu-20.04-server-cloudimg-amd64.img downloaded in Download Image.

Scripts/

There are two script files for deploying Kubernetes cluster. install_k8s_cluster.sh is used to install k8s cluster on VM created by tacker. kubernetes_mgmt.py is a Mgmt Driver file to be executed before or after instantiate, terminate, scale and heal. You can obtain these scripts in the directory at the same level as this guide.

BaseHOT/

Base HOT file is a Native cloud orchestration template, HOT in this context, which is commonly used for LCM operations in different VNFs. It is the responsibility of the user to prepare this file, and it is necessary to make it consistent with VNFD placed under the Definitions/ directory.

In this guide, you must use user data to deploy the Kubernetes cluster, so the BaseHot directory must be included.

You must place the directory corresponding to deployment_flavour stored in the Definitions/ under the BaseHOT/ directory, and store the Base HOT files in it.

In this guide, there are two cases (simple and complex) in this VNF Package, so there are two directories under BaseHOT/ directory. The sample files are shown below:

simple
complex

UserData/

LCM operation user data is a script that returns key/value data as Heat input parameters used for Base HOT. The sample file is shown below:

2. Create VNF Package

Execute the following CLI command to create VNF Package.

$ openstack vnf package create

Result:

$ openstack vnf package create
+-------------------+-------------------------------------------------------------------------------------------------+
| Field             | Value                                                                                           |
+-------------------+-------------------------------------------------------------------------------------------------+
| ID                | 03a8eb3e-a981-434e-a548-82d9b90161d7                                                            |
| Links             | {                                                                                               |
|                   |     "self": {                                                                                   |
|                   |         "href": "/vnfpkgm/v1/vnf_packages/03a8eb3e-a981-434e-a548-82d9b90161d7"                 |
|                   |     },                                                                                          |
|                   |     "packageContent": {                                                                         |
|                   |         "href": "/vnfpkgm/v1/vnf_packages/03a8eb3e-a981-434e-a548-82d9b90161d7/package_content" |
|                   |     }                                                                                           |
|                   | }                                                                                               |
| Onboarding State  | CREATED                                                                                         |
| Operational State | DISABLED                                                                                        |
| Usage State       | NOT_IN_USE                                                                                      |
| User Defined Data | {}                                                                                              |
+-------------------+-------------------------------------------------------------------------------------------------+

3. Upload VNF Package

Before you instantiate VNF, you must create a zip file of VNF Package and upload it.

Execute the following command to make a zip file.

$ zip sample_kubernetes_csar.zip -r Definitions/ Files/ TOSCA-Metadata/ BaseHOT/ UserData/ Scripts/

Execute the following CLI command to upload VNF Package.

$ openstack vnf package upload --path ./sample_kubernetes_csar.zip 03a8eb3e-a981-434e-a548-82d9b90161d7

Result:

Upload request for VNF package 03a8eb3e-a981-434e-a548-82d9b90161d7 has been accepted.

After that, execute the following CLI command and confirm that VNF Package uploading was successful.

  • Confirm that the 'Onboarding State' is 'ONBOARDED'.
  • Confirm that the 'Operational State' is 'ENABLED'.
  • Confirm that the 'Usage State' is 'NOT_IN_USE'.
  • Take a note of the 'VNFD ID' because you will need it in the next 'Deploy Kubernetes cluster'.
$ openstack vnf package show 03a8eb3e-a981-434e-a548-82d9b90161d7
+----------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field                | Value                                                                                                                                                  |
+----------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| Additional Artifacts | [                                                                                                                                                      |
|                      |     {                                                                                                                                                  |
|                      |         "artifactPath": "Scripts/install_k8s_cluster.sh",                                                                                              |
|                      |         "checksum": {                                                                                                                                  |
|                      |             "algorithm": "SHA-256",                                                                                                                    |
|                      |             "hash": "7f1f4518a3db7b386a473aebf0aa2561eaa94073ac4c95b9d3e7b3fb5bba3017"                                                                 |
|                      |         },                                                                                                                                             |
|                      |         "metadata": {}                                                                                                                                 |
|                      |     },                                                                                                                                                 |
|                      |     {                                                                                                                                                  |
|                      |         "artifactPath": "Scripts/kubernetes_mgmt.py",                                                                                                  |
|                      |         "checksum": {                                                                                                                                  |
|                      |             "algorithm": "SHA-256",                                                                                                                    |
|                      |             "hash": "3d8fc578cca5eec0fb625fc3f5eeaa67c34c2a5f89329ed9307f343cfc25cdc4"                                                                 |
|                      |         },                                                                                                                                             |
|                      |         "metadata": {}                                                                                                                                 |
|                      |     }                                                                                                                                                  |
|                      | ]                                                                                                                                                      |
| Checksum             | {                                                                                                                                                      |
|                      |     "hash": "d853ca27df5ad5270516adc8ec3cef6ebf982f09f2291eb150c677691d2c793e454e0feb61f211a2b4b8b6df899ab2f2c808684ae1f9100081e5375f8bfcec3d",        |
|                      |     "algorithm": "sha512"                                                                                                                              |
|                      | }                                                                                                                                                      |
| ID                   | 03a8eb3e-a981-434e-a548-82d9b90161d7                                                                                                                   |
| Links                | {                                                                                                                                                      |
|                      |     "self": {                                                                                                                                          |
|                      |         "href": "/vnfpkgm/v1/vnf_packages/03a8eb3e-a981-434e-a548-82d9b90161d7"                                                                        |
|                      |     },                                                                                                                                                 |
|                      |     "packageContent": {                                                                                                                                |
|                      |         "href": "/vnfpkgm/v1/vnf_packages/03a8eb3e-a981-434e-a548-82d9b90161d7/package_content"                                                        |
|                      |     }                                                                                                                                                  |
|                      | }                                                                                                                                                      |
| Onboarding State     | ONBOARDED                                                                                                                                              |
| Operational State    | ENABLED                                                                                                                                                |
| Software Images      | [                                                                                                                                                      |
|                      |     {                                                                                                                                                  |
|                      |         "size": 2000000000,                                                                                                                            |
|                      |         "version": "20.04",                                                                                                                            |
|                      |         "name": "Image for masterNode kubernetes",                                                                                                     |
|                      |         "createdAt": "2021-02-18 08:49:39+00:00",                                                                                                      |
|                      |         "id": "masterNode",                                                                                                                            |
|                      |         "containerFormat": "bare",                                                                                                                     |
|                      |         "minDisk": 0,                                                                                                                                  |
|                      |         "imagePath": "",                                                                                                                               |
|                      |         "minRam": 0,                                                                                                                                   |
|                      |         "diskFormat": "qcow2",                                                                                                                         |
|                      |         "provider": "",                                                                                                                                |
|                      |         "checksum": {                                                                                                                                  |
|                      |             "algorithm": "sha-512",                                                                                                                    |
|                      |             "hash": "fb1a1e50f9af2df6ab18a69b6bc5df07ebe8ef962b37e556ce95350ffc8f4a1118617d486e2018d1b3586aceaeda799e6cc073f330a7ad8f0ec0416cbd825452" |
|                      |         },                                                                                                                                             |
|                      |         "userMetadata": {}                                                                                                                             |
|                      |     },                                                                                                                                                 |
|                      |     {                                                                                                                                                  |
|                      |         "size": 2000000000,                                                                                                                            |
|                      |         "version": "20.04",                                                                                                                            |
|                      |         "name": "Image for workerNode kubernetes",                                                                                                     |
|                      |         "createdAt": "2021-02-18 08:49:40+00:00",                                                                                                      |
|                      |         "id": "workerNode",                                                                                                                            |
|                      |         "containerFormat": "bare",                                                                                                                     |
|                      |         "minDisk": 0,                                                                                                                                  |
|                      |         "imagePath": "",                                                                                                                               |
|                      |         "minRam": 0,                                                                                                                                   |
|                      |         "diskFormat": "qcow2",                                                                                                                         |
|                      |         "provider": "",                                                                                                                                |
|                      |         "checksum": {                                                                                                                                  |
|                      |             "algorithm": "sha-512",                                                                                                                    |
|                      |             "hash": "fb1a1e50f9af2df6ab18a69b6bc5df07ebe8ef962b37e556ce95350ffc8f4a1118617d486e2018d1b3586aceaeda799e6cc073f330a7ad8f0ec0416cbd825452" |
|                      |         },                                                                                                                                             |
|                      |         "userMetadata": {}                                                                                                                             |
|                      |     },                                                                                                                                                 |
|                      |     {                                                                                                                                                  |
|                      |         "size": 2000000000,                                                                                                                            |
|                      |         "version": "20.04",                                                                                                                            |
|                      |         "name": "Image for workerNode kubernetes",                                                                                                     |
|                      |         "createdAt": "2021-02-18 08:49:39+00:00",                                                                                                      |
|                      |         "id": "workerNode",                                                                                                                            |
|                      |         "containerFormat": "bare",                                                                                                                     |
|                      |         "minDisk": 0,                                                                                                                                  |
|                      |         "imagePath": "",                                                                                                                               |
|                      |         "minRam": 0,                                                                                                                                   |
|                      |         "diskFormat": "qcow2",                                                                                                                         |
|                      |         "provider": "",                                                                                                                                |
|                      |         "checksum": {                                                                                                                                  |
|                      |             "algorithm": "sha-512",                                                                                                                    |
|                      |             "hash": "fb1a1e50f9af2df6ab18a69b6bc5df07ebe8ef962b37e556ce95350ffc8f4a1118617d486e2018d1b3586aceaeda799e6cc073f330a7ad8f0ec0416cbd825452" |
|                      |         },                                                                                                                                             |
|                      |         "userMetadata": {}                                                                                                                             |
|                      |     },                                                                                                                                                 |
|                      |     {                                                                                                                                                  |
|                      |         "size": 2000000000,                                                                                                                            |
|                      |         "version": "20.04",                                                                                                                            |
|                      |         "name": "Image for masterNode kubernetes",                                                                                                     |
|                      |         "createdAt": "2021-02-18 08:49:39+00:00",                                                                                                      |
|                      |         "id": "masterNode",                                                                                                                            |
|                      |         "containerFormat": "bare",                                                                                                                     |
|                      |         "minDisk": 0,                                                                                                                                  |
|                      |         "imagePath": "",                                                                                                                               |
|                      |         "minRam": 0,                                                                                                                                   |
|                      |         "diskFormat": "qcow2",                                                                                                                         |
|                      |         "provider": "",                                                                                                                                |
|                      |         "checksum": {                                                                                                                                  |
|                      |             "algorithm": "sha-512",                                                                                                                    |
|                      |             "hash": "fb1a1e50f9af2df6ab18a69b6bc5df07ebe8ef962b37e556ce95350ffc8f4a1118617d486e2018d1b3586aceaeda799e6cc073f330a7ad8f0ec0416cbd825452" |
|                      |         },                                                                                                                                             |
|                      |         "userMetadata": {}                                                                                                                             |
|                      |     }                                                                                                                                                  |
|                      | ]                                                                                                                                                      |
| Usage State          | NOT_IN_USE                                                                                                                                             |
| User Defined Data    | {}                                                                                                                                                     |
| VNF Product Name     | Sample VNF                                                                                                                                             |
| VNF Provider         | Company                                                                                                                                                |
| VNF Software Version | 1.0                                                                                                                                                    |
| VNFD ID              | b1db0ce7-ebca-1fb7-95ed-4840d70a1163                                                                                                                   |
| VNFD Version         | 1.0                                                                                                                                                    |
+----------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+

Deploy Kubernetes Cluster

1. Single Master Node

A single master Kubernetes cluster can be installed and set up in "instantiate_end" operation, which allows you to execute any scripts after its instantiation, and it's enabled with Mgmt Driver support. The instantiated Kubernetes cluster only supports one master node and multiple worker nodes. The instantiated Kubernetes cluster will be automatically registered as VIM. Then you can use the VIM to deploy CNF.

If you want to deploy a single master Kubernetes cluster, you can use VNF Package with 'simple' flavour created in Create and Upload VNF Package. The most important thing is that you must create the parameter file which is used to instantiate correctly. The following are the methods of creating the parameter file and cli commands of OpenStack.

1. Create the Parameter File

Create a simple_kubernetes_param_file.json file with the following format. This is the file that defines the parameters for an instantiate request. These parameters will be set in the body of the instantiate request.

Required parameter:

  • flavourId
  • additionalParams

Note

[This is UserData specific part] additionalParams is a parameter that can be described by KeyValuePairs. By setting the following two parameters in this parameter, instantiate using LCM operation user data becomes possible. For file_name.py and class_name, set the file name and class name described in Prerequisites.

  • lcm-operation-user-data: ./UserData/file_name.py
  • lcm-operation-user-data-class: class_name

Optional parameters:

  • instantiationLevelId
  • extVirtualLinks
  • extManagedVirtualLinks
  • vimConnectionInfo

In this guide, the VMs need to have extCPs to be accessed via SSH by Tacker. Therefore, extVirtualLinks parameter is required. You can skip vimConnectionInfo only when you have the default VIM described in cli-legacy-vim.

Explanation of the parameters for deploying a Kubernetes cluster

For deploying Kubernetes cluster, you must set the k8s_cluster_installation_param key in additionalParams. The KeyValuePairs is shown in table below:

## List of additionalParams.k8s_cluster_installation_param (specified by user)
+------------------+-----------+---------------------------------------------+-------------------+
| parameter        | data type | description                                 | required/optional |
+------------------+-----------+---------------------------------------------+-------------------+
| script_path      | String    | The path where the Kubernetes installation  | required          |
|                  |           | script stored in the VNF Package            |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| vim_name         | String    | The vim name of deployed Kubernetes cluster | optional          |
|                  |           | registered by tacker                        |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| master_node      | dict      | Information for the VM of the master node   | required          |
|                  |           | group                                       |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| worker_node      | dict      | Information for the VM of the worker node   | required          |
|                  |           | group                                       |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| proxy            | dict      | Information for proxy setting on VM         | optional          |
+------------------+-----------+---------------------------------------------+-------------------+

## master_node dict
+------------------+-----------+---------------------------------------------+-------------------+
| parameter        | data type | description                                 | required/optional |
+------------------+-----------+---------------------------------------------+-------------------+
| aspect_id        | String    | The resource name of the master node group, | optional          |
|                  |           | and is same as the `aspect` in `vnfd`. If   |                   |
|                  |           | you use user data, it must be set           |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| ssh_cp_name      | String    | Resource name of port corresponding to the  | required          |
|                  |           | master node's ssh ip                        |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| nic_cp_name      | String    | Resource name of port corresponding to the  | required          |
|                  |           | master node's nic ip (which used for        |                   |
|                  |           | deploying Kubernetes cluster)               |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| username         | String    | Username for VM access                      | required          |
+------------------+-----------+---------------------------------------------+-------------------+
| password         | String    | Password for VM access                      | required          |
+------------------+-----------+---------------------------------------------+-------------------+
| pod_cidr         | String    | CIDR for pod                                | optional          |
+------------------+-----------+---------------------------------------------+-------------------+
| cluster_cidr     | String    | CIDR for service                            | optional          |
+------------------+-----------+---------------------------------------------+-------------------+
| cluster_cp_name  | String    | Resource name of the Port corresponding to  | required          |
|                  |           | cluster ip                                  |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| cluster_fip_name | String    | Resource name of the Port corresponding to  | optional          |
|                  |           | cluster ip used for registering vim. If you |                   |
|                  |           | use floating ip as ssh ip, it must be set   |                   |
+------------------+-----------+---------------------------------------------+-------------------+

## worker_node dict
+------------------+-----------+---------------------------------------------+-------------------+
| parameter        | data type | description                                 | required/optional |
+------------------+-----------+---------------------------------------------+-------------------+
| aspect_id        | String    | The resource name of the worker node group, | optional          |
|                  |           | and is same as the `aspect` in `vnfd`. If   |                   |
|                  |           | you use user data, it must be set           |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| ssh_cp_name      | String    | Resource name of port corresponding to the  | required          |
|                  |           | worker node's ssh ip                        |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| nic_cp_name      | String    | Resource name of port corresponding to the  | required          |
|                  |           | worker node's nic ip (which used for        |                   |
|                  |           | deploying Kubernetes cluster)               |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| username         | String    | Username for VM access                      | required          |
+------------------+-----------+---------------------------------------------+-------------------+
| password         | String    | Password for VM access                      | required          |
+------------------+-----------+---------------------------------------------+-------------------+

## proxy dict
+------------------+-----------+---------------------------------------------+-------------------+
| parameter        | data type | description                                 | required/optional |
+------------------+-----------+---------------------------------------------+-------------------+
| http_proxy       | string    | Http proxy server address                   | optional          |
+------------------+-----------+---------------------------------------------+-------------------+
| https_proxy      | string    | Https proxy server address                  | optional          |
+------------------+-----------+---------------------------------------------+-------------------+
| no_proxy         | string    | User-customized, proxy server-free IP       | optional          |
|                  |           | address or segment                          |                   |
+------------------+-----------+---------------------------------------------+-------------------+
| k8s_node_cidr    | string    | CIDR for Kubernetes node, all its ip will be| optional          |
|                  |           | set into no_proxy                           |                   |
+------------------+-----------+---------------------------------------------+-------------------+

simple_kubernetes_param_file.json

{
    "flavourId": "simple",
    "vimConnectionInfo": [{
        "id": "3cc2c4ff-525c-48b4-94c9-29247223322f",
        "vimId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496", #Set the uuid of the VIM to use
        "vimType": "openstack"
    }],
    "additionalParams": {
        "k8s_cluster_installation_param": {
            "script_path": "Scripts/install_k8s_cluster.sh",
            "vim_name": "kubernetes_vim",
            "master_node": {
                "aspect_id": "master_instance",
                "ssh_cp_name": "masterNode_CP1",
                "nic_cp_name": "masterNode_CP1",
                "username": "ubuntu",
                "password": "ubuntu",
                "pod_cidr": "192.168.3.0/16",
                "cluster_cidr": "10.199.187.0/24",
                "cluster_cp_name": "masterNode_CP1"
            },
            "worker_node": {
                "aspect_id": "worker_instance",
                "ssh_cp_name": "workerNode_CP2",
                "nic_cp_name": "workerNode_CP2",
                "username": "ubuntu",
                "password": "ubuntu"
            },
            "proxy": {
                "http_proxy": "http://user1:password1@host1:port1",
                "https_proxy": "https://user2:password2@host2:port2",
                "no_proxy": "192.168.246.0/24,10.0.0.1",
                "k8s_node_cidr": "10.10.0.0/24"
            }
        },
        "lcm-operation-user-data": "./UserData/k8s_cluster_user_data.py",
        "lcm-operation-user-data-class": "KubernetesClusterUserData"
    },
    "extVirtualLinks": [{
        "id": "net0_master",
        "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",  #Set the uuid of the network to use
        "extCps": [{
            "cpdId": "masterNode_CP1",
            "cpConfig": [{
                "cpProtocolData": [{
                    "layerProtocol": "IP_OVER_ETHERNET"
                }]
            }]
        }]
    }, {
        "id": "net0_worker",
        "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",  #Set the uuid of the network to use
        "extCps": [{
            "cpdId": "workerNode_CP2",
            "cpConfig": [{
                "cpProtocolData": [{
                    "layerProtocol": "IP_OVER_ETHERNET"
                }]
            }]
        }]
    }]
}

2. Execute the Instantiation Operations

Execute the following CLI command to instantiate the VNF instance.

$ openstack vnflcm create b1db0ce7-ebca-1fb7-95ed-4840d70a1163
+--------------------------+---------------------------------------------------------------------------------------------+
| Field                    | Value                                                                                       |
+--------------------------+---------------------------------------------------------------------------------------------+
| ID                       | 3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72                                                        |
| Instantiation State      | NOT_INSTANTIATED                                                                            |
| Links                    | {                                                                                           |
|                          |     "self": {                                                                               |
|                          |         "href": "/vnflcm/v1/vnf_instances/3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72"             |
|                          |     },                                                                                      |
|                          |     "instantiate": {                                                                        |
|                          |         "href": "/vnflcm/v1/vnf_instances/3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72/instantiate" |
|                          |     }                                                                                       |
|                          | }                                                                                           |
| VNF Instance Description | None                                                                                        |
| VNF Instance Name        | vnf-3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72                                                    |
| VNF Product Name         | Sample VNF                                                                                  |
| VNF Provider             | Company                                                                                     |
| VNF Software Version     | 1.0                                                                                         |
| VNFD ID                  | b1db0ce7-ebca-1fb7-95ed-4840d70a1163                                                        |
| VNFD Version             | 1.0                                                                                         |
| vnfPkgId                 |                                                                                             |
+--------------------------+---------------------------------------------------------------------------------------------+
$ openstack vnflcm instantiate 3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72 ./simple_kubernetes_param_file.json
Instantiate request for VNF Instance 3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72 has been accepted.
$ openstack vnflcm show 3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72
+--------------------------+-------------------------------------------------------------------------------------------+
| Field                    | Value                                                                                     |
+--------------------------+-------------------------------------------------------------------------------------------+
| ID                       | 3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72                                                      |
| Instantiated Vnf Info    | {                                                                                         |
|                          |     "flavourId": "simple",                                                                |
|                          |     "vnfState": "STARTED",                                                                |
|                          |     "scaleStatus": [                                                                      |
|                          |         {                                                                                 |
|                          |             "aspectId": "master_instance",                                                |
|                          |             "scaleLevel": 0                                                               |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "aspectId": "worker_instance",                                                |
|                          |             "scaleLevel": 0                                                               |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "extCpInfo": [                                                                        |
|                          |         {                                                                                 |
|                          |             "id": "d6ed7fd0-c26e-4e1e-81ab-71dc8c6d8293",                                 |
|                          |             "cpdId": "masterNode_CP1",                                                    |
|                          |             "extLinkPortId": null,                                                        |
|                          |             "associatedVnfcCpId": "1f830544-57ef-4f93-bdb5-b59e465f58d8",                 |
|                          |             "cpProtocolInfo": [                                                           |
|                          |                 {                                                                         |
|                          |                     "layerProtocol": "IP_OVER_ETHERNET"                                   |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "ba0f7de5-32b3-48dd-944d-341990ede0cb",                                 |
|                          |             "cpdId": "workerNode_CP2",                                                    |
|                          |             "extLinkPortId": null,                                                        |
|                          |             "associatedVnfcCpId": "9244012d-ad53-4685-912b-f6413ae38493",                 |
|                          |             "cpProtocolInfo": [                                                           |
|                          |                 {                                                                         |
|                          |                     "layerProtocol": "IP_OVER_ETHERNET"                                   |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "extVirtualLinkInfo": [                                                               |
|                          |         {                                                                                 |
|                          |             "id": "b396126a-6a95-4a24-94ae-67b58f5bd9c2",                                 |
|                          |             "resourceHandle": {                                                           |
|                          |                 "vimConnectionId": null,                                                  |
|                          |                 "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",                     |
|                          |                 "vimLevelResourceType": null                                              |
|                          |             }                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "10dfbb44-a8ff-435b-98f8-70539e71af8c",                                 |
|                          |             "resourceHandle": {                                                           |
|                          |                 "vimConnectionId": null,                                                  |
|                          |                 "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",                     |
|                          |                 "vimLevelResourceType": null                                              |
|                          |             }                                                                             |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "vnfcResourceInfo": [                                                                 |
|                          |         {                                                                                 |
|                          |             "id": "1f830544-57ef-4f93-bdb5-b59e465f58d8",                                 |
|                          |             "vduId": "masterNode",                                                        |
|                          |             "computeResource": {                                                          |
|                          |                 "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                |
|                          |                 "resourceId": "a0eccaee-ff7b-4c70-8c11-ba79c8d4deb6",                     |
|                          |                 "vimLevelResourceType": "OS::Nova::Server"                                |
|                          |             },                                                                            |
|                          |             "storageResourceIds": [],                                                     |
|                          |             "vnfcCpInfo": [                                                               |
|                          |                 {                                                                         |
|                          |                     "id": "9fe655ab-1d35-4d22-a6f3-9a07fa797884",                         |
|                          |                     "cpdId": "masterNode_CP1",                                            |
|                          |                     "vnfExtCpId": null,                                                   |
|                          |                     "vnfLinkPortId": "e66a44a4-965f-49dd-b168-ff4cc2485c34",              |
|                          |                     "cpProtocolInfo": [                                                   |
|                          |                         {                                                                 |
|                          |                             "layerProtocol": "IP_OVER_ETHERNET"                           |
|                          |                         }                                                                 |
|                          |                     ]                                                                     |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "9244012d-ad53-4685-912b-f6413ae38493",                                 |
|                          |             "vduId": "workerNode",                                                        |
|                          |             "computeResource": {                                                          |
|                          |                 "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                |
|                          |                 "resourceId": "5b3ff765-7a9f-447a-a06d-444e963b74c9",                     |
|                          |                 "vimLevelResourceType": "OS::Nova::Server"                                |
|                          |             },                                                                            |
|                          |             "storageResourceIds": [],                                                     |
|                          |             "vnfcCpInfo": [                                                               |
|                          |                 {                                                                         |
|                          |                     "id": "59176610-fc1c-4abe-9648-87a9b8b79640",                         |
|                          |                     "cpdId": "workerNode_CP2",                                            |
|                          |                     "vnfExtCpId": null,                                                   |
|                          |                     "vnfLinkPortId": "977b8775-350d-4ef0-95e5-552c4c4099f3",              |
|                          |                     "cpProtocolInfo": [                                                   |
|                          |                         {                                                                 |
|                          |                             "layerProtocol": "IP_OVER_ETHERNET"                           |
|                          |                         }                                                                 |
|                          |                     ]                                                                     |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "974a4b98-5d07-44d4-9e13-a8ed21805111",                                 |
|                          |             "vduId": "workerNode",                                                        |
|                          |             "computeResource": {                                                          |
|                          |                 "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                |
|                          |                 "resourceId": "63402e5a-67c9-4f5c-b03f-b21f4a88507f",                     |
|                          |                 "vimLevelResourceType": "OS::Nova::Server"                                |
|                          |             },                                                                            |
|                          |             "storageResourceIds": [],                                                     |
|                          |             "vnfcCpInfo": [                                                               |
|                          |                 {                                                                         |
|                          |                     "id": "523b1328-9704-4ac1-986f-99c9b46ee1c4",                         |
|                          |                     "cpdId": "workerNode_CP2",                                            |
|                          |                     "vnfExtCpId": null,                                                   |
|                          |                     "vnfLinkPortId": "eba708c4-14de-4d96-bc82-ed0abd95780b",              |
|                          |                     "cpProtocolInfo": [                                                   |
|                          |                         {                                                                 |
|                          |                             "layerProtocol": "IP_OVER_ETHERNET"                           |
|                          |                         }                                                                 |
|                          |                     ]                                                                     |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "vnfVirtualLinkResourceInfo": [                                                       |
|                          |         {                                                                                 |
|                          |             "id": "96d15ae5-a1d8-4867-aaee-a4372de8bc0e",                                 |
|                          |             "vnfVirtualLinkDescId": "b396126a-6a95-4a24-94ae-67b58f5bd9c2",               |
|                          |             "networkResource": {                                                          |
|                          |                 "vimConnectionId": null,                                                  |
|                          |                 "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",                     |
|                          |                 "vimLevelResourceType": "OS::Neutron::Net"                                |
|                          |             },                                                                            |
|                          |             "vnfLinkPorts": [                                                             |
|                          |                 {                                                                         |
|                          |                     "id": "e66a44a4-965f-49dd-b168-ff4cc2485c34",                         |
|                          |                     "resourceHandle": {                                                   |
|                          |                         "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",        |
|                          |                         "resourceId": "b5ed388b-de4e-4de8-a24a-f1b70c5cce94",             |
|                          |                         "vimLevelResourceType": "OS::Neutron::Port"                       |
|                          |                     },                                                                    |
|                          |                     "cpInstanceId": "9fe655ab-1d35-4d22-a6f3-9a07fa797884"                |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "c67b6f41-fd7a-45b2-b69a-8de9623dc16b",                                 |
|                          |             "vnfVirtualLinkDescId": "10dfbb44-a8ff-435b-98f8-70539e71af8c",               |
|                          |             "networkResource": {                                                          |
|                          |                 "vimConnectionId": null,                                                  |
|                          |                 "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",                     |
|                          |                 "vimLevelResourceType": "OS::Neutron::Net"                                |
|                          |             },                                                                            |
|                          |             "vnfLinkPorts": [                                                             |
|                          |                 {                                                                         |
|                          |                     "id": "977b8775-350d-4ef0-95e5-552c4c4099f3",                         |
|                          |                     "resourceHandle": {                                                   |
|                          |                         "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",        |
|                          |                         "resourceId": "0002bba0-608b-4e2c-bd4d-23f1717f017c",             |
|                          |                         "vimLevelResourceType": "OS::Neutron::Port"                       |
|                          |                     },                                                                    |
|                          |                     "cpInstanceId": "59176610-fc1c-4abe-9648-87a9b8b79640"                |
|                          |                 },                                                                        |
|                          |                 {                                                                         |
|                          |                     "id": "eba708c4-14de-4d96-bc82-ed0abd95780b",                         |
|                          |                     "resourceHandle": {                                                   |
|                          |                         "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",        |
|                          |                         "resourceId": "facc9eae-6f2d-4cfb-89c2-27841eea771c",             |
|                          |                         "vimLevelResourceType": "OS::Neutron::Port"                       |
|                          |                     },                                                                    |
|                          |                     "cpInstanceId": "523b1328-9704-4ac1-986f-99c9b46ee1c4"                |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "vnfcInfo": [                                                                         |
|                          |         {                                                                                 |
|                          |             "id": "1405984c-b174-4f33-8cfa-851d54ab95ce",                                 |
|                          |             "vduId": "masterNode",                                                        |
|                          |             "vnfcState": "STARTED"                                                        |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "08b3f00e-a133-4262-8edb-03e2484ce870",                                 |
|                          |             "vduId": "workerNode",                                                        |
|                          |             "vnfcState": "STARTED"                                                        |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "027502d6-d072-4819-a502-cb7cc688ec16",                                 |
|                          |             "vduId": "workerNode",                                                        |
|                          |             "vnfcState": "STARTED"                                                        |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "additionalParams": {                                                                 |
|                          |         "lcm-operation-user-data": "./UserData/k8s_cluster_user_data.py",                 |
|                          |         "lcm-operation-user-data-class": "KubernetesClusterUserData",                     |
|                          |         "k8sClusterInstallationParam": {                                                  |
|                          |             "vimName": "kubernetes_vim",                                                 |
|                          |             "proxy": {                                                                    |
|                          |                 "noProxy": "192.168.246.0/24,10.0.0.1",                                   |
|                          |                 "httpProxy": "http://user1:password1@host1:port1",                        |
|                          |                 "httpsProxy": "https://user2:password2@host2:port2",                      |
|                          |                 "k8sNodeCidr": "10.10.0.0/24"                                             |
|                          |             },                                                                            |
|                          |             "masterNode": {                                                               |
|                          |                 "password": "ubuntu",                                                     |
|                          |                 "podCidr": "192.168.3.0/16",                                              |
|                          |                 "username": "ubuntu",                                                     |
|                          |                 "aspectId": "master_instance",                                            |
|                          |                 "nicCpName": "masterNode_CP1",                                            |
|                          |                 "sshCpName": "masterNode_CP1",                                            |
|                          |                 "clusterCidr": "10.199.187.0/24",                                         |
|                          |                 "clusterCpName": "masterNode_CP1"                                         |
|                          |             },                                                                            |
|                          |             "scriptPath": "Scripts/install_k8s_cluster.sh",                               |
|                          |             "workerNode": {                                                               |
|                          |                 "password": "ubuntu",                                                     |
|                          |                 "username": "ubuntu",                                                     |
|                          |                 "aspectId": "worker_instance",                                            |
|                          |                 "nicCpName": "workerNode_CP2",                                            |
|                          |                 "sshCpName": "workerNode_CP2"                                             |
|                          |             }                                                                             |
|                          |         }                                                                                 |
|                          |     }                                                                                     |
|                          | }                                                                                         |
| Instantiation State      | INSTANTIATED                                                                              |
| Links                    | {                                                                                         |
|                          |     "self": {                                                                             |
|                          |         "href": "/vnflcm/v1/vnf_instances/3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72"           |
|                          |     },                                                                                    |
|                          |     "terminate": {                                                                        |
|                          |         "href": "/vnflcm/v1/vnf_instances/3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72/terminate" |
|                          |     },                                                                                    |
|                          |     "heal": {                                                                             |
|                          |         "href": "/vnflcm/v1/vnf_instances/3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72/heal"      |
|                          |     }                                                                                     |
|                          | }                                                                                         |
| VIM Connection Info      | [                                                                                         |
|                          |     {                                                                                     |
|                          |         "id": "9ab53adf-ca70-47b2-8877-1858cfb53618",                                     |
|                          |         "vimId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                                  |
|                          |         "vimType": "openstack",                                                           |
|                          |         "interfaceInfo": {},                                                              |
|                          |         "accessInfo": {}                                                                  |
|                          |     },                                                                                    |
|                          |     {                                                                                     |
|                          |         "id": "ef2c6b0c-c930-4d6c-9fe4-7c143e80ad94",                                     |
|                          |         "vimId": "2aeef9af-6a5b-4122-8510-21dbc71bc7cb",                                  |
|                          |         "vimType": "kubernetes",                                                          |
|                          |         "interfaceInfo": null,                                                            |
|                          |         "accessInfo": {                                                                   |
|                          |             "authUrl": "https://10.10.0.35:6443"                                          |
|                          |         }                                                                                 |
|                          |     }                                                                                     |
|                          | ]                                                                                         |
| VNF Instance Description | None                                                                                      |
| VNF Instance Name        | vnf-3f32428d-e8ce-4d6a-9be9-4c7f3a02ac72                                                  |
| VNF Product Name         | Sample VNF                                                                                |
| VNF Provider             | Company                                                                                   |
| VNF Software Version     | 1.0                                                                                       |
| VNFD ID                  | b1db0ce7-ebca-1fb7-95ed-4840d70a1163                                                      |
| VNFD Version             | 1.0                                                                                       |
| vnfPkgId                 |                                                                                           |
+--------------------------+-------------------------------------------------------------------------------------------+

2. Multi-master Nodes

When you install the Kubernetes cluster in an HA configuration, at least three Master nodes are configured in the Kubernetes cluster. On each Master node, a load balancer (HAProxy) and etcd will be built. Those described above are performed by "instantiate_end" operation with Mgmt Driver.

If you want to deploy a multi-master Kubernetes cluster, you can use VNF Package with complex flavour created in Create and Upload VNF Package. The following are the methods of creating the parameter file and cli commands of OpenStack.

1. Create the Parameter File

The parameters in parameter file are the same as those in 1. Single master node. It should be noted that since you need to create a group (at least three) master nodes, you must set the aspect_id. At the same time, HA cluster needs a representative IP to access, so the cluster_cp_name must be set to the port name of the virtual ip created in BaseHot. In this guide, cluster_cp_name is vip_CP. The complex_kubernetes_param_file.json is shown below.

complex_kubernetes_param_file.json

{
    "flavourId": "complex",
    "vimConnectionInfo": [{
        "id": "3cc2c4ff-525c-48b4-94c9-29247223322f",
        "vimId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496", #Set the uuid of the VIM to use
        "vimType": "openstack"
    }],
    "additionalParams": {
        "k8s_cluster_installation_param": {
            "script_path": "Scripts/install_k8s_cluster.sh",
            "vim_name": "kubernetes_vim_complex",
            "master_node": {
                "aspect_id": "master_instance",
                "ssh_cp_name": "masterNode_CP1",
                "nic_cp_name": "masterNode_CP1",
                "username": "ubuntu",
                "password": "ubuntu",
                "pod_cidr": "192.168.3.0/16",
                "cluster_cidr": "10.199.187.0/24",
                "cluster_cp_name": "vip_CP"
            },
            "worker_node": {
                "aspect_id": "worker_instance",
                "ssh_cp_name": "workerNode_CP2",
                "nic_cp_name": "workerNode_CP2",
                "username": "ubuntu",
                "password": "ubuntu"
            },
            "proxy": {
                "http_proxy": "http://user1:password1@host1:port1",
                "https_proxy": "https://user2:password2@host2:port2",
                "no_proxy": "192.168.246.0/24,10.0.0.1",
                "k8s_node_cidr": "10.10.0.0/24"
            }
        },
        "lcm-operation-user-data": "./UserData/k8s_cluster_user_data.py",
        "lcm-operation-user-data-class": "KubernetesClusterUserData"
    },
    "extVirtualLinks": [{
        "id": "net0_master",
        "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",  #Set the uuid of the network to use
        "extCps": [{
            "cpdId": "masterNode_CP1",
            "cpConfig": [{
                "cpProtocolData": [{
                    "layerProtocol": "IP_OVER_ETHERNET"
                }]
            }]
        }]
    }, {
        "id": "net0_worker",
        "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",  #Set the uuid of the network to use
        "extCps": [{
            "cpdId": "workerNode_CP2",
            "cpConfig": [{
                "cpProtocolData": [{
                    "layerProtocol": "IP_OVER_ETHERNET"
                }]
            }]
        }]
    }]
}

2. Execute the Instantiation Operations

The VNF Package has been uploaded in Create and Upload VNF Package. So you just execute the following cli command on OpenStack Controller Node.

$ openstack vnflcm create b1db0ce7-ebca-1fb7-95ed-4840d70a1163
+--------------------------+---------------------------------------------------------------------------------------------+
| Field                    | Value                                                                                       |
+--------------------------+---------------------------------------------------------------------------------------------+
| ID                       | c5215213-af4b-4080-95ab-377920474e1a                                                        |
| Instantiation State      | NOT_INSTANTIATED                                                                            |
| Links                    | {                                                                                           |
|                          |     "self": {                                                                               |
|                          |         "href": "/vnflcm/v1/vnf_instances/c5215213-af4b-4080-95ab-377920474e1a"             |
|                          |     },                                                                                      |
|                          |     "instantiate": {                                                                        |
|                          |         "href": "/vnflcm/v1/vnf_instances/c5215213-af4b-4080-95ab-377920474e1a/instantiate" |
|                          |     }                                                                                       |
|                          | }                                                                                           |
| VNF Instance Description | None                                                                                        |
| VNF Instance Name        | vnf-c5215213-af4b-4080-95ab-377920474e1a                                                    |
| VNF Product Name         | Sample VNF                                                                                  |
| VNF Provider             | Company                                                                                     |
| VNF Software Version     | 1.0                                                                                         |
| VNFD ID                  | b1db0ce7-ebca-1fb7-95ed-4840d70a1163                                                        |
| VNFD Version             | 1.0                                                                                         |
| vnfPkgId                 |                                                                                             |
+--------------------------+---------------------------------------------------------------------------------------------+

$ openstack vnflcm instantiate c5215213-af4b-4080-95ab-377920474e1a ./complex_kubernetes_param_file.json
Instantiate request for VNF Instance c5215213-af4b-4080-95ab-377920474e1a has been accepted.
$ openstack vnflcm show c5215213-af4b-4080-95ab-377920474e1a
+--------------------------+-------------------------------------------------------------------------------------------+
| Field                    | Value                                                                                     |
+--------------------------+-------------------------------------------------------------------------------------------+
| ID                       | c5215213-af4b-4080-95ab-377920474e1a                                                      |
| Instantiated Vnf Info    | {                                                                                         |
|                          |     "flavourId": "complex",                                                               |
|                          |     "vnfState": "STARTED",                                                                |
|                          |     "scaleStatus": [                                                                      |
|                          |         {                                                                                 |
|                          |             "aspectId": "master_instance",                                                |
|                          |             "scaleLevel": 0                                                               |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "aspectId": "worker_instance",                                                |
|                          |             "scaleLevel": 0                                                               |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "extCpInfo": [                                                                        |
|                          |         {                                                                                 |
|                          |             "id": "a36f667a-f0f8-4ac8-a120-b19569d7bd72",                                 |
|                          |             "cpdId": "masterNode_CP1",                                                    |
|                          |             "extLinkPortId": null,                                                        |
|                          |             "associatedVnfcCpId": "bbce9656-f051-434f-8c4a-660ac23e91f6",                 |
|                          |             "cpProtocolInfo": [                                                           |
|                          |                 {                                                                         |
|                          |                     "layerProtocol": "IP_OVER_ETHERNET"                                   |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "67f38bd4-ae0b-4257-82eb-09a3c2dfd470",                                 |
|                          |             "cpdId": "workerNode_CP2",                                                    |
|                          |             "extLinkPortId": null,                                                        |
|                          |             "associatedVnfcCpId": "b4af0652-74b8-47bd-bcf6-94769bdbf756",                 |
|                          |             "cpProtocolInfo": [                                                           |
|                          |                 {                                                                         |
|                          |                     "layerProtocol": "IP_OVER_ETHERNET"                                   |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "extVirtualLinkInfo": [                                                               |
|                          |         {                                                                                 |
|                          |             "id": "24e3e9ae-0df4-49d6-9ee4-e21dfe359baf",                                 |
|                          |             "resourceHandle": {                                                           |
|                          |                 "vimConnectionId": null,                                                  |
|                          |                 "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",                     |
|                          |                 "vimLevelResourceType": null                                              |
|                          |             }                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "2283b96d-64f8-4403-9b21-643aa1058e86",                                 |
|                          |             "resourceHandle": {                                                           |
|                          |                 "vimConnectionId": null,                                                  |
|                          |                 "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",                     |
|                          |                 "vimLevelResourceType": null                                              |
|                          |             }                                                                             |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "vnfcResourceInfo": [                                                                 |
|                          |         {                                                                                 |
|                          |             "id": "bbce9656-f051-434f-8c4a-660ac23e91f6",                                 |
|                          |             "vduId": "masterNode",                                                        |
|                          |             "computeResource": {                                                          |
|                          |                 "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                |
|                          |                 "resourceId": "a0eccaee-ff7b-4c70-8c11-ba79c8d4deb6",                     |
|                          |                 "vimLevelResourceType": "OS::Nova::Server"                                |
|                          |             },                                                                            |
|                          |             "storageResourceIds": [],                                                     |
|                          |             "vnfcCpInfo": [                                                               |
|                          |                 {                                                                         |
|                          |                     "id": "9fe655ab-1d35-4d22-a6f3-9a07fa797884",                         |
|                          |                     "cpdId": "masterNode_CP1",                                            |
|                          |                     "vnfExtCpId": null,                                                   |
|                          |                     "vnfLinkPortId": "e66a44a4-965f-49dd-b168-ff4cc2485c34",              |
|                          |                     "cpProtocolInfo": [                                                   |
|                          |                         {                                                                 |
|                          |                             "layerProtocol": "IP_OVER_ETHERNET"                           |
|                          |                         }                                                                 |
|                          |                     ]                                                                     |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "8bee8301-eb14-4c5c-bab8-a1b244d4d954",                                 |
|                          |             "vduId": "masterNode",                                                        |
|                          |             "computeResource": {                                                          |
|                          |                 "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                |
|                          |                 "resourceId": "4a40d65c-3440-4c44-858a-72a66324a11a",                     |
|                          |                 "vimLevelResourceType": "OS::Nova::Server"                                |
|                          |             },                                                                            |
|                          |             "storageResourceIds": [],                                                     |
|                          |             "vnfcCpInfo": [                                                               |
|                          |                 {                                                                         |
|                          |                     "id": "65c9f35a-08a2-4875-bd85-af419f26b19d",                         |
|                          |                     "cpdId": "masterNode_CP1",                                            |
|                          |                     "vnfExtCpId": null,                                                   |
|                          |                     "vnfLinkPortId": "26fa4b33-ad07-4982-ad97-18b66abba541",              |
|                          |                     "cpProtocolInfo": [                                                   |
|                          |                         {                                                                 |
|                          |                             "layerProtocol": "IP_OVER_ETHERNET"                           |
|                          |                         }                                                                 |
|                          |                     ]                                                                     |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "28ac0cb9-3bc1-4bc2-8be2-cf60f51b7b7a",                                 |
|                          |             "vduId": "masterNode",                                                        |
|                          |             "computeResource": {                                                          |
|                          |                 "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                |
|                          |                 "resourceId": "12708197-9724-41b8-b48c-9eb6862331dc",                     |
|                          |                 "vimLevelResourceType": "OS::Nova::Server"                                |
|                          |             },                                                                            |
|                          |             "storageResourceIds": [],                                                     |
|                          |             "vnfcCpInfo": [                                                               |
|                          |                 {                                                                         |
|                          |                     "id": "d51f3b54-a9ed-46be-8ffe-64b5d07d1a7b",                         |
|                          |                     "cpdId": "masterNode_CP1",                                            |
|                          |                     "vnfExtCpId": null,                                                   |
|                          |                     "vnfLinkPortId": "b71dc885-8e3e-4ccd-ac6f-feff332fd395",              |
|                          |                     "cpProtocolInfo": [                                                   |
|                          |                         {                                                                 |
|                          |                             "layerProtocol": "IP_OVER_ETHERNET"                           |
|                          |                         }                                                                 |
|                          |                     ]                                                                     |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "b4af0652-74b8-47bd-bcf6-94769bdbf756",                                 |
|                          |             "vduId": "workerNode",                                                        |
|                          |             "computeResource": {                                                          |
|                          |                 "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                |
|                          |                 "resourceId": "5b3ff765-7a9f-447a-a06d-444e963b74c9",                     |
|                          |                 "vimLevelResourceType": "OS::Nova::Server"                                |
|                          |             },                                                                            |
|                          |             "storageResourceIds": [],                                                     |
|                          |             "vnfcCpInfo": [                                                               |
|                          |                 {                                                                         |
|                          |                     "id": "59176610-fc1c-4abe-9648-87a9b8b79640",                         |
|                          |                     "cpdId": "workerNode_CP2",                                            |
|                          |                     "vnfExtCpId": null,                                                   |
|                          |                     "vnfLinkPortId": "977b8775-350d-4ef0-95e5-552c4c4099f3",              |
|                          |                     "cpProtocolInfo": [                                                   |
|                          |                         {                                                                 |
|                          |                             "layerProtocol": "IP_OVER_ETHERNET"                           |
|                          |                         }                                                                 |
|                          |                     ]                                                                     |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "974a4b98-5d07-44d4-9e13-a8ed21805111",                                 |
|                          |             "vduId": "workerNode",                                                        |
|                          |             "computeResource": {                                                          |
|                          |                 "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                |
|                          |                 "resourceId": "63402e5a-67c9-4f5c-b03f-b21f4a88507f",                     |
|                          |                 "vimLevelResourceType": "OS::Nova::Server"                                |
|                          |             },                                                                            |
|                          |             "storageResourceIds": [],                                                     |
|                          |             "vnfcCpInfo": [                                                               |
|                          |                 {                                                                         |
|                          |                     "id": "523b1328-9704-4ac1-986f-99c9b46ee1c4",                         |
|                          |                     "cpdId": "workerNode_CP2",                                            |
|                          |                     "vnfExtCpId": null,                                                   |
|                          |                     "vnfLinkPortId": "eba708c4-14de-4d96-bc82-ed0abd95780b",              |
|                          |                     "cpProtocolInfo": [                                                   |
|                          |                         {                                                                 |
|                          |                             "layerProtocol": "IP_OVER_ETHERNET"                           |
|                          |                         }                                                                 |
|                          |                     ]                                                                     |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "vnfVirtualLinkResourceInfo": [                                                       |
|                          |         {                                                                                 |
|                          |             "id": "96d15ae5-a1d8-4867-aaee-a4372de8bc0e",                                 |
|                          |             "vnfVirtualLinkDescId": "24e3e9ae-0df4-49d6-9ee4-e21dfe359baf",               |
|                          |             "networkResource": {                                                          |
|                          |                 "vimConnectionId": null,                                                  |
|                          |                 "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",                     |
|                          |                 "vimLevelResourceType": "OS::Neutron::Net"                                |
|                          |             },                                                                            |
|                          |             "vnfLinkPorts": [                                                             |
|                          |                 {                                                                         |
|                          |                     "id": "e66a44a4-965f-49dd-b168-ff4cc2485c34",                         |
|                          |                     "resourceHandle": {                                                   |
|                          |                         "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",        |
|                          |                         "resourceId": "b5ed388b-de4e-4de8-a24a-f1b70c5cce94",             |
|                          |                         "vimLevelResourceType": "OS::Neutron::Port"                       |
|                          |                     },                                                                    |
|                          |                     "cpInstanceId": "9fe655ab-1d35-4d22-a6f3-9a07fa797884"                |
|                          |                 },                                                                        |
|                          |                 {                                                                         |
|                          |                     "id": "26fa4b33-ad07-4982-ad97-18b66abba541",                         |
|                          |                     "resourceHandle": {                                                   |
|                          |                         "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",        |
|                          |                         "resourceId": "dfab524f-dec9-4247-973c-a0e22475f950",             |
|                          |                         "vimLevelResourceType": "OS::Neutron::Port"                       |
|                          |                     },                                                                    |
|                          |                     "cpInstanceId": "65c9f35a-08a2-4875-bd85-af419f26b19d"                |
|                          |                 },                                                                        |
|                          |                 {                                                                         |
|                          |                     "id": "b71dc885-8e3e-4ccd-ac6f-feff332fd395",                         |
|                          |                     "resourceHandle": {                                                   |
|                          |                         "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",        |
|                          |                         "resourceId": "45733936-0a9e-4eaa-a71f-3a77cb034581",             |
|                          |                         "vimLevelResourceType": "OS::Neutron::Port"                       |
|                          |                     },                                                                    |
|                          |                     "cpInstanceId": "d51f3b54-a9ed-46be-8ffe-64b5d07d1a7b"                |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "c67b6f41-fd7a-45b2-b69a-8de9623dc16b",                                 |
|                          |             "vnfVirtualLinkDescId": "2283b96d-64f8-4403-9b21-643aa1058e86",               |
|                          |             "networkResource": {                                                          |
|                          |                 "vimConnectionId": null,                                                  |
|                          |                 "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",                     |
|                          |                 "vimLevelResourceType": "OS::Neutron::Net"                                |
|                          |             },                                                                            |
|                          |             "vnfLinkPorts": [                                                             |
|                          |                 {                                                                         |
|                          |                     "id": "977b8775-350d-4ef0-95e5-552c4c4099f3",                         |
|                          |                     "resourceHandle": {                                                   |
|                          |                         "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",        |
|                          |                         "resourceId": "0002bba0-608b-4e2c-bd4d-23f1717f017c",             |
|                          |                         "vimLevelResourceType": "OS::Neutron::Port"                       |
|                          |                     },                                                                    |
|                          |                     "cpInstanceId": "59176610-fc1c-4abe-9648-87a9b8b79640"                |
|                          |                 },                                                                        |
|                          |                 {                                                                         |
|                          |                     "id": "eba708c4-14de-4d96-bc82-ed0abd95780b",                         |
|                          |                     "resourceHandle": {                                                   |
|                          |                         "vimConnectionId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",        |
|                          |                         "resourceId": "facc9eae-6f2d-4cfb-89c2-27841eea771c",             |
|                          |                         "vimLevelResourceType": "OS::Neutron::Port"                       |
|                          |                     },                                                                    |
|                          |                     "cpInstanceId": "523b1328-9704-4ac1-986f-99c9b46ee1c4"                |
|                          |                 }                                                                         |
|                          |             ]                                                                             |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "vnfcInfo": [                                                                         |
|                          |         {                                                                                 |
|                          |             "id": "3ca607b9-f270-4077-8af8-d5d244f8893b",                                 |
|                          |             "vduId": "masterNode",                                                        |
|                          |             "vnfcState": "STARTED"                                                        |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "c2b19ef1-f748-4175-9f3a-6792a9ee7a62",                                 |
|                          |             "vduId": "masterNode",                                                        |
|                          |             "vnfcState": "STARTED"                                                        |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "59f5fd29-d20f-426f-a1a6-526757205cb4",                                 |
|                          |             "vduId": "masterNode",                                                        |
|                          |             "vnfcState": "STARTED"                                                        |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "08b3f00e-a133-4262-8edb-03e2484ce870",                                 |
|                          |             "vduId": "workerNode",                                                        |
|                          |             "vnfcState": "STARTED"                                                        |
|                          |         },                                                                                |
|                          |         {                                                                                 |
|                          |             "id": "027502d6-d072-4819-a502-cb7cc688ec16",                                 |
|                          |             "vduId": "workerNode",                                                        |
|                          |             "vnfcState": "STARTED"                                                        |
|                          |         }                                                                                 |
|                          |     ],                                                                                    |
|                          |     "additionalParams": {                                                                 |
|                          |         "lcm-operation-user-data": "./UserData/k8s_cluster_user_data.py",                 |
|                          |         "lcm-operation-user-data-class": "KubernetesClusterUserData",                     |
|                          |         "k8sClusterInstallationParam": {                                                  |
|                          |             "vimName": "kubernetes_vim_complex",                                          |
|                          |             "proxy": {                                                                    |
|                          |                 "noProxy": "192.168.246.0/24,10.0.0.1",                                   |
|                          |                 "httpProxy": "http://user1:password1@host1:port1",                        |
|                          |                 "httpsProxy": "https://user2:password2@host2:port2",                      |
|                          |                 "k8sNodeCidr": "10.10.0.0/24"                                             |
|                          |             },                                                                            |
|                          |             "masterNode": {                                                               |
|                          |                 "password": "ubuntu",                                                     |
|                          |                 "podCidr": "192.168.3.0/16",                                              |
|                          |                 "username": "ubuntu",                                                     |
|                          |                 "aspectId": "master_instance",                                            |
|                          |                 "nicCpName": "masterNode_CP1",                                            |
|                          |                 "sshCpName": "masterNode_CP1",                                            |
|                          |                 "clusterCidr": "10.199.187.0/24",                                         |
|                          |                 "clusterCpName": "vip_CP"                                                 |
|                          |             },                                                                            |
|                          |             "scriptPath": "Scripts/install_k8s_cluster.sh",                               |
|                          |             "workerNode": {                                                               |
|                          |                 "password": "ubuntu",                                                     |
|                          |                 "username": "ubuntu",                                                     |
|                          |                 "aspectId": "worker_instance",                                            |
|                          |                 "nicCpName": "workerNode_CP2",                                            |
|                          |                 "sshCpName": "workerNode_CP2"                                             |
|                          |             }                                                                             |
|                          |         }                                                                                 |
|                          |     }                                                                                     |
|                          | }                                                                                         |
| Instantiation State      | INSTANTIATED                                                                              |
| Links                    | {                                                                                         |
|                          |     "self": {                                                                             |
|                          |         "href": "/vnflcm/v1/vnf_instances/c5215213-af4b-4080-95ab-377920474e1a"           |
|                          |     },                                                                                    |
|                          |     "terminate": {                                                                        |
|                          |         "href": "/vnflcm/v1/vnf_instances/c5215213-af4b-4080-95ab-377920474e1a/terminate" |
|                          |     },                                                                                    |
|                          |     "heal": {                                                                             |
|                          |         "href": "/vnflcm/v1/vnf_instances/c5215213-af4b-4080-95ab-377920474e1a/heal"      |
|                          |     }                                                                                     |
|                          | }                                                                                         |
| VIM Connection Info      | [                                                                                         |
|                          |     {                                                                                     |
|                          |         "id": "9ab53adf-ca70-47b2-8877-1858cfb53618",                                     |
|                          |         "vimId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496",                                  |
|                          |         "vimType": "openstack",                                                           |
|                          |         "interfaceInfo": {},                                                              |
|                          |         "accessInfo": {}                                                                  |
|                          |     },                                                                                    |
|                          |     {                                                                                     |
|                          |         "id": "2e56da35-f343-4f9e-8f04-7722f8edbe7a",                                     |
|                          |         "vimId": "3e04bb8e-2dbd-4c32-9575-d2937f3aa931",                                  |
|                          |         "vimType": "kubernetes",                                                          |
|                          |         "interfaceInfo": null,                                                            |
|                          |         "accessInfo": {                                                                   |
|                          |             "authUrl": "https://10.10.0.80:16443"                                         |
|                          |         }                                                                                 |
|                          |     }                                                                                     |
|                          | ]                                                                                         |
| VNF Instance Description | None                                                                                      |
| VNF Instance Name        | vnf-c5215213-af4b-4080-95ab-377920474e1a                                                  |
| VNF Product Name         | Sample VNF                                                                                |
| VNF Provider             | Company                                                                                   |
| VNF Software Version     | 1.0                                                                                       |
| VNFD ID                  | b1db0ce7-ebca-1fb7-95ed-4840d70a1163                                                      |
| VNFD Version             | 1.0                                                                                       |
| vnfPkgId                 |                                                                                           |
+--------------------------+-------------------------------------------------------------------------------------------+

Scale Kubernetes Worker Nodes

According to NFV-SOL001 v2.6.1, scale_start and scale_end operation allows users to execute any scripts in the scale operation, and scaling operations on the worker nodes in Kubernetes cluster is supported with Mgmt Driver.

After instantiating a Kubernetes cluster, if you want to delete one or more worker node in Kubernetes cluster, you can execute scale in operation. If you want to add new worker nodes in Kubernetes cluster, you can execute scale out operation. The following are the methods of creating the parameter file and cli commands of OpenStack.

1. Create the Parameter File

The following is scale parameter to "POST /vnf_instances/{id}/scale" as ScaleVnfRequest data type in ETSI NFV-SOL003 v2.6.1:

+------------------+---------------------------------------------------------+
| Attribute name   | Parameter description                                   |
+------------------+---------------------------------------------------------+
| type             | User specify scaling operation type:                    |
|                  | "SCALE_IN" or "SCALE_OUT"                               |
+------------------+---------------------------------------------------------+
| aspectId         | User specify target aspectId, aspectId is defined in    |
|                  | above VNFD and user can know by                         |
|                  | ``InstantiatedVnfInfo.ScaleStatus`` that contained in   |
|                  | the response of "GET /vnf_instances/{id}"               |
+------------------+---------------------------------------------------------+
| numberOfSteps    | Number of scaling steps                                 |
+------------------+---------------------------------------------------------+
| additionalParams | Not needed                                              |
+------------------+---------------------------------------------------------+

Following are two samples of scaling request body:

{
    "type": "SCALE_OUT",
    "aspectId": "worker_instance",
    "numberOfSteps": "1"
}
{
    "type": "SCALE_IN",
    "aspectId": "worker_instance",
    "numberOfSteps": "1"
}

Note

Only the worker node can be scaled out (in). The current function does not support scale master node.

2. Execute the Scale Operations

Before you execute scale command, you must ensure that your VNF instance is already instantiated. The VNF Package should be uploaded in Create and Upload VNF Package and the Kubernetes cluster should be deployed with the process in Deploy Kubernetes Cluster.

When executing the scale operation of worker nodes, the following Heat API is called from Tacker.

  • stack update

The steps to confirm whether scaling is successful are shown below:

1. Execute Heat CLI command and check the number of resource list in 'worker_instance' of the stack before and after scaling.

2. Login to master node of Kubernetes cluster and check the number of worker nodes before and after scaling.

To confirm the number of worker nodes after scaling, you can find the increased or decreased number of stack resource with Heat CLI. Also the number of registered worker nodes in the Kubernetes cluster should be updated. See Heat CLI reference for details on Heat CLI commands.

  • Stack information before scaling:

    $ openstack stack resource list vnf-c5215213-af4b-4080-95ab-377920474e1a -n 2 --filter \
        type=complex_nested_worker.yaml -c resource_name -c physical_resource_id -c resource_type \
        -c resource_status
    +---------------+--------------------------------------+-----------------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type               | resource_status |
    +---------------+--------------------------------------+-----------------------------+-----------------+
    | lwljovool2wg  | 07b79bbe-d0b2-4df0-8775-6202142b6054 | complex_nested_worker.yaml  | CREATE_COMPLETE |
    | n6nnjta4f4rv  | 56c9ec6f-5e52-44db-9d0d-57e3484e763f | complex_nested_worker.yaml  | CREATE_COMPLETE |
    +---------------+--------------------------------------+-----------------------------+-----------------+
  • worker node in Kubernetes cluster before scaling:

    $ ssh ubuntu@10.10.0.80
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master59   Ready    control-plane,master   1h25m   v1.20.4
    master78   Ready    control-plane,master   1h1m    v1.20.4
    master31   Ready    control-plane,master   35m     v1.20.4
    worker18   Ready    <none>                 10m     v1.20.4
    worker20   Ready    <none>                 4m      v1.20.4
  • Scaling out execution of the vnf_instance:

    $ openstack vnflcm scale --type "SCALE_OUT" --aspect-id worker_instance --number-of-steps 1 c5215213-af4b-4080-95ab-377920474e1a
      Scale request for VNF Instance c5215213-af4b-4080-95ab-377920474e1a has been accepted.
  • Stack information after scaling out:

    $ openstack stack resource list vnf-c5215213-af4b-4080-95ab-377920474e1a -n 2 --filter \
        type=complex_nested_worker.yaml -c resource_name -c physical_resource_id -c resource_type \
        -c resource_status
    +---------------+--------------------------------------+-----------------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type               | resource_status |
    +---------------+--------------------------------------+-----------------------------+-----------------+
    | lwljovool2wg  | 07b79bbe-d0b2-4df0-8775-6202142b6054 | complex_nested_worker.yaml  | UPDATE_COMPLETE |
    | n6nnjta4f4rv  | 56c9ec6f-5e52-44db-9d0d-57e3484e763f | complex_nested_worker.yaml  | UPDATE_COMPLETE |
    | z5nky6qcodlq  | f9ab73ff-3ad7-40d2-830a-87bd0c45af32 | complex_nested_worker.yaml  | CREATE_COMPLETE |
    +---------------+--------------------------------------+-----------------------------+-----------------+
  • worker node in Kubernetes cluster after scaling out:

    $ ssh ubuntu@10.10.0.80
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master59   Ready    control-plane,master   1h35m   v1.20.4
    master78   Ready    control-plane,master   1h11m   v1.20.4
    master31   Ready    control-plane,master   45m     v1.20.4
    worker18   Ready    <none>                 20m     v1.20.4
    worker20   Ready    <none>                 14m     v1.20.4
    worker45   Ready    <none>                 4m      v1.20.4
  • Scaling in execution of the vnf_instance:

    $ openstack vnflcm scale --type "SCALE_IN" --aspect-id worker_instance --number-of-steps 1 c5215213-af4b-4080-95ab-377920474e1a
    Scale request for VNF Instance c5215213-af4b-4080-95ab-377920474e1a has been accepted.

    Note

    This example shows the output of "SCALE_IN" after its "SCALE_OUT" operation.

  • Stack information after scaling in:

    $ openstack stack resource list vnf-c5215213-af4b-4080-95ab-377920474e1a -n 2 --filter type=complex_nested_worker.yaml -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+-----------------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type               | resource_status |
    +---------------+--------------------------------------+-----------------------------+-----------------+
    | n6nnjta4f4rv  | 56c9ec6f-5e52-44db-9d0d-57e3484e763f | complex_nested_worker.yaml  | UPDATE_COMPLETE |
    | z5nky6qcodlq  | f9ab73ff-3ad7-40d2-830a-87bd0c45af32 | complex_nested_worker.yaml  | UPDATE_COMPLETE |
    +---------------+--------------------------------------+-----------------------------+-----------------+
  • worker node in Kubernetes cluster after scaling in:

    $ ssh ubuntu@10.10.0.80
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master59   Ready    control-plane,master   1h38m   v1.20.4
    master78   Ready    control-plane,master   1h14m   v1.20.4
    master31   Ready    control-plane,master   48m     v1.20.4
    worker20   Ready    <none>                 17m     v1.20.4
    worker45   Ready    <none>                 7m      v1.20.4

Heal Kubernetes Master/Worker Nodes

According to NFV-SOL001 v2.6.1, heal_start and heal_end operation allows users to execute any scripts in the heal operation, and healing operations on the master nodes and worker nodes in Kubernetes cluster is supported with Mgmt Driver.

After instantiating a Kubernetes cluster, if one of your node in Kubernetes cluster is not running properly, you can heal it. The healing of entire Kubernetes cluster is also supported. The following are the methods of creating the parameter file and cli commands of OpenStack.

1. Create the Parameter File

The following is heal parameter to "POST /vnf_instances/{id}/heal" as HealVnfRequest data type. It is not the same in SOL002 and SOL003.

In NFV-SOL002 v2.6.1:

+------------------+---------------------------------------------------------+
| Attribute name   | Parameter description                                   |
+------------------+---------------------------------------------------------+
| vnfcInstanceId   | User specify heal target, user can know "vnfcInstanceId"|
|                  | by ``InstantiatedVnfInfo.vnfcResourceInfo`` that        |
|                  | contained in the response of "GET /vnf_instances/{id}". |
+------------------+---------------------------------------------------------+
| cause            | Not needed                                              |
+------------------+---------------------------------------------------------+
| additionalParams | Not needed                                              |
+------------------+---------------------------------------------------------+
| healScript       | Not needed                                              |
+------------------+---------------------------------------------------------+

In NFV-SOL003 v2.6.1:

+------------------+---------------------------------------------------------+
| Attribute name   | Parameter description                                   |
+------------------+---------------------------------------------------------+
| cause            | Not needed                                              |
+------------------+---------------------------------------------------------+
| additionalParams | Not needed                                              |
+------------------+---------------------------------------------------------+

cause, and additionalParams are supported for both of SOL002 and SOL003.

If the vnfcInstanceId parameter is null, this means that healing operation is required for the entire Kubernetes cluster, which is the case in SOL003.

Following is a sample of healing request body for SOL002:

{
    "vnfcInstanceId": "bbce9656-f051-434f-8c4a-660ac23e91f6"
}

Note

In chapter of Deploy Kubernetes cluster, the result of VNF instance instantiated has shown in CLI command openstack vnflcm show VNF INSTANCE ID.

You can get the vnfcInstanceId from Instantiated Vnf Info in above result. The vnfcResourceInfo.id is vnfcInstanceId.

The physical_resource_id mentioned below is the same as vnfcResourceInfo.computeResource.resourceId.

2. Execute the Heal Operations

1. Heal a Master Node

When healing specified with VNFC instances, Heat APIs are called from Tacker.

  • stack resource mark unhealthy
  • stack update

The steps to confirm whether healing is successful are shown below:

1. Execute Heat CLI command and check physical_resource_id and resource_status of master node before and after healing.

2. Login to master node of Kubernetes cluster and check the age of master node before and after healing.

To confirm that healing the master node is successful, you can find the physical_resource_id of this resource of 'master_instance resource list' has changed with Heat CLI. Also the age of master node healed should be updated in Kubernetes cluster.

Note

Note that 'vnfc-instance-id' managed by Tacker and 'physical-resource-id' managed by Heat are different.

  • master node information before healing:

    $ openstack stack resource list vnf-c5215213-af4b-4080-95ab-377920474e1a -n 2 --filter type=OS::Nova::Server -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type    | resource_status |
    +---------------+--------------------------------------+------------------+-----------------+
    | workerNode    | 5b3ff765-7a9f-447a-a06d-444e963b74c9 | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | 63402e5a-67c9-4f5c-b03f-b21f4a88507f | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | a0eccaee-ff7b-4c70-8c11-ba79c8d4deb6 | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 4a40d65c-3440-4c44-858a-72a66324a11a | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 12708197-9724-41b8-b48c-9eb6862331dc | OS::Nova::Server | CREATE_COMPLETE |
    +---------------+--------------------------------------+------------------+-----------------+
  • master node in Kubernetes cluster before healing:

    $ ssh ubuntu@10.10.0.80
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master59   Ready    control-plane,master   1h38m   v1.20.4
    master78   Ready    control-plane,master   1h14m   v1.20.4
    master31   Ready    control-plane,master   48m     v1.20.4
    worker20   Ready    <none>                 17m     v1.20.4
    worker45   Ready    <none>                 7m      v1.20.4

We heal the master node with physical_resource_id a0eccaee-ff7b-4c70-8c11-ba79c8d4deb6, its vnfc_instance_id is bbce9656-f051-434f-8c4a-660ac23e91f6.

  • Healing master node execution of the vnf_instance:

    $ openstack vnflcm heal c5215213-af4b-4080-95ab-377920474e1a --vnfc-instance bbce9656-f051-434f-8c4a-660ac23e91f6
    Heal request for VNF Instance 9e086f34-b3c9-4986-b5e5-609a5ac4c1f9 has been accepted.
  • master node information after healing:

    $ openstack stack resource list vnf-c5215213-af4b-4080-95ab-377920474e1a -n 2 --filter type=OS::Nova::Server -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type    | resource_status |
    +---------------+--------------------------------------+------------------+-----------------+
    | workerNode    | 5b3ff765-7a9f-447a-a06d-444e963b74c9 | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | 63402e5a-67c9-4f5c-b03f-b21f4a88507f | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | aaecc9b4-8ce5-4f1c-a90b-3571fd4bfb5f | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 4a40d65c-3440-4c44-858a-72a66324a11a | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 12708197-9724-41b8-b48c-9eb6862331dc | OS::Nova::Server | CREATE_COMPLETE |
    +---------------+--------------------------------------+------------------+-----------------+
  • master node in Kubernetes cluster after healing:

    $ ssh ubuntu@10.10.0.80
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master78   Ready    control-plane,master   1h36m   v1.20.4
    master31   Ready    control-plane,master   1h10m   v1.20.4
    worker20   Ready    <none>                 39m     v1.20.4
    worker45   Ready    <none>                 29m     v1.20.4
    master59   Ready    control-plane,master   2m      v1.20.4

2. Heal a Worker Node

Healing a worker node is the same as Healing a master node. You just replace the vnfc_instance_id in healing command.

  • worker node information before healing:

    $ openstack stack resource list vnf-c5215213-af4b-4080-95ab-377920474e1a -n 2 --filter type=OS::Nova::Server -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type    | resource_status |
    +---------------+--------------------------------------+------------------+-----------------+
    | workerNode    | 5b3ff765-7a9f-447a-a06d-444e963b74c9 | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | 63402e5a-67c9-4f5c-b03f-b21f4a88507f | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | aaecc9b4-8ce5-4f1c-a90b-3571fd4bfb5f | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 4a40d65c-3440-4c44-858a-72a66324a11a | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 12708197-9724-41b8-b48c-9eb6862331dc | OS::Nova::Server | CREATE_COMPLETE |
    +---------------+--------------------------------------+------------------+-----------------+
  • worker node in Kubernetes cluster before healing:

    $ ssh ubuntu@10.10.0.80
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master78   Ready    control-plane,master   1h36m   v1.20.4
    master31   Ready    control-plane,master   1h10m   v1.20.4
    worker20   Ready    <none>                 39m     v1.20.4
    worker45   Ready    <none>                 29m     v1.20.4
    master59   Ready    control-plane,master   2m      v1.20.4

We heal the worker node with physical_resource_id 5b3ff765-7a9f-447a-a06d-444e963b74c9, its vnfc_instance_id is b4af0652-74b8-47bd-bcf6-94769bdbf756.

  • Healing worker node execution of the vnf_instance:

    $ openstack vnflcm heal c5215213-af4b-4080-95ab-377920474e1a --vnfc-instance b4af0652-74b8-47bd-bcf6-94769bdbf756
    Heal request for VNF Instance 9e086f34-b3c9-4986-b5e5-609a5ac4c1f9 has been accepted.
  • worker node information after healing:

    $ openstack stack resource list vnf-c5215213-af4b-4080-95ab-377920474e1a -n 2 --filter type=OS::Nova::Server -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type    | resource_status |
    +---------------+--------------------------------------+------------------+-----------------+
    | workerNode    | 5b3ff765-7a9f-447a-a06d-444e963b74c9 | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | c94f8952-bf2e-4a08-906e-67cee771112b | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | aaecc9b4-8ce5-4f1c-a90b-3571fd4bfb5f | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 4a40d65c-3440-4c44-858a-72a66324a11a | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 12708197-9724-41b8-b48c-9eb6862331dc | OS::Nova::Server | CREATE_COMPLETE |
    +---------------+--------------------------------------+------------------+-----------------+
  • worker node in Kubernetes cluster after healing:

    $ ssh ubuntu@10.10.0.80
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master78   Ready    control-plane,master   1h46m   v1.20.4
    master31   Ready    control-plane,master   1h20m   v1.20.4
    worker45   Ready    <none>                 39m     v1.20.4
    master59   Ready    control-plane,master   10m     v1.20.4
    worker20   Ready    <none>                 2m      v1.20.4

3. Heal the Entire Kubernetes Cluster

When healing of the entire VNF, the following APIs are executed from Tacker to Heat.

  • stack delete
  • stack create

1. Execute Heat CLI command and check 'ID' and 'Stack Status' of the stack before and after healing.

2. All the information of Kubernetes cluster will be changed.

This is to confirm that stack 'ID' has changed before and after healing.

  • Stack information before healing:

    $ openstack stack list -c 'ID' -c 'Stack Name' -c 'Stack Status'
    +--------------------------------------+------------------------------------------+-----------------+
    | ID                                   | Stack Name                               | Stack Status    |
    +--------------------------------------+------------------------------------------+-----------------+
    | f485f3f2-8181-4ed5-b927-e582b5aa9b14 | vnf-c5215213-af4b-4080-95ab-377920474e1a | CREATE_COMPLETE |
    +--------------------------------------+------------------------------------------+-----------------+
  • Kubernetes cluster information before healing:

    $ ssh ubuntu@10.10.0.80
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master59   Ready    control-plane,master   1h38m   v1.20.4
    master78   Ready    control-plane,master   1h14m   v1.20.4
    master31   Ready    control-plane,master   48m     v1.20.4
    worker20   Ready    <none>                 17m     v1.20.4
    worker45   Ready    <none>                 7m      v1.20.4
  • Healing execution of the entire VNF:

    $ openstack vnflcm heal c5215213-af4b-4080-95ab-377920474e1a
    Heal request for VNF Instance c5215213-af4b-4080-95ab-377920474e1a has been accepted.
  • Stack information after healing:

    $ openstack stack list -c 'ID' -c 'Stack Name' -c 'Stack Status'
    +--------------------------------------+------------------------------------------+-----------------+
    | ID                                   | Stack Name                               | Stack Status    |
    +--------------------------------------+------------------------------------------+-----------------+
    | 03aaadbe-bf5a-44a0-84b0-8f2a18f8a844 | vnf-c5215213-af4b-4080-95ab-377920474e1a | CREATE_COMPLETE |
    +--------------------------------------+------------------------------------------+-----------------+
  • Kubernetes cluster information after healing:

    $ ssh ubuntu@10.10.0.93
    $ kubectl get node
    NAME       STATUS   ROLES                  AGE     VERSION
    master46   Ready    control-plane,master   1h25m   v1.20.4
    master37   Ready    control-plane,master   1h1m    v1.20.4
    master14   Ready    control-plane,master   35m     v1.20.4
    worker101  Ready    <none>                 10m     v1.20.4
    worker214  Ready    <none>                 4m      v1.20.4

Hardware-aware Affinity For Pods on Kubernetes Cluster

In the two cases (simple and complex) mentioned above, if you deploy a Container Network Function on the VNF of a Kubernetes cluster, the Pods may be scheduled on the same physical compute server while they are labeled with anti-affinity rules. The anti-affinity rule can deploy the Pods on different worker nodes, but the worker nodes may be in the same server. In this chapter, we provide a way to support the hardware-aware affinity for Pods.

This case will create a Kubernetes cluster with 3 master nodes and 2 worker nodes. When Tacker deploys worker nodes, an 'anti-affinity' rule will be added to their "scheduler_hints" property (a property can control which compute server the VM will deploy on), so that the worker node will be deployed on the different server. After the worker node has joined into the Kubernetes cluster, a label (whose type is 'topologyKey', key is 'CIS-node' and value is which server the worker node deployed on) will be added to the worker node.

Then, when deploying Pods in this Kubernetes cluster, if the Pods have an 'anti-affinity' rule based on the'CIS-node' label, the Pods will be scheduled on worker nodes with different values of this label, so the Pods will be deployed on different servers.

At the same time, if you use Grant to deploy your VM, you can specify the Availability Zone (AZ) of the VM. In this case, your worker node will be added a label (whose type is 'topologyKey', key is 'kubernetes.io/zone' and value is which AZ the worker node deployed on). When you specify the zone label in pod-affinity, your pod will be deployed to a different AZ.

1. VNF Package Introduction

The VNF Package of Hardware-aware Affinity (hereinafter referred to as pod-affinity) is similar to the above two case packages. You only need to append definition files of pod-affinity in the Definitions and BaseHOT directories.

Definitions

The files deployment_flavour should be different from the above two cases. The sample file is shown below:

BaseHOT

The BaseHOT requires the configuration of a srvgroup that contains policy definitions for the anti-affinity. The directory structure is shown below:

!----BaseHOT
        !---- podaffinity
                !---- nested
                        !---- podaffinity_nested_master.yaml
                        !---- podaffinity_nested_worker.yaml
                !---- podaffinity_hot_top.yaml

The sample files are shown below:

2. Instantiate Kubernetes Cluster with Pod-affinity

The operation steps and methods of instantiating with pod-affinity are the same as those in Deploy Kubernetes Cluster. The difference is that flavourId in parameter file used in instantiate needs to be modified to the one of pod-affinity. In this use case, flavourId is podaffinity.

podaffinity_kubernetes_param_file.json is shown below.

podaffinity_kubernetes_param_file.json

{
    "flavourId": "podaffinity",
    "vimConnectionInfo": [{
        "id": "3cc2c4ff-525c-48b4-94c9-29247223322f",
        "vimId": "05ef7ca5-7e32-4a6b-a03d-52f811f04496", #Set the uuid of the VIM to use
        "vimType": "openstack"
    }],
    "additionalParams": {
        "k8s_cluster_installation_param": {
            "script_path": "Scripts/install_k8s_cluster.sh",
            "vim_name": "kubernetes_vim_podaffinity",
            "master_node": {
                "aspect_id": "master_instance",
                "ssh_cp_name": "masterNode_CP1",
                "nic_cp_name": "masterNode_CP1",
                "username": "ubuntu",
                "password": "ubuntu",
                "pod_cidr": "192.168.0.0/16",
                "cluster_cidr": "10.199.187.0/24",
                "cluster_cp_name": "vip_CP"
            },
            "worker_node": {
                "aspect_id": "worker_instance",
                "ssh_cp_name": "workerNode_CP2",
                "nic_cp_name": "workerNode_CP2",
                "username": "ubuntu",
                "password": "ubuntu"
            },
            "proxy": {
                "http_proxy": "http://user1:password1@host1:port1",
                "https_proxy": "https://user2:password2@host2:port2",
                "no_proxy": "192.168.246.0/24,10.0.0.1",
                "k8s_node_cidr": "10.10.0.0/24"
            }
        },
        "lcm-operation-user-data": "./UserData/k8s_cluster_user_data.py",
        "lcm-operation-user-data-class": "KubernetesClusterUserData"
    },
    "extVirtualLinks": [{
        "id": "net0_master",
        "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",  #Set the uuid of the network to use
        "extCps": [{
            "cpdId": "masterNode_CP1",
            "cpConfig": [{
                "cpProtocolData": [{
                    "layerProtocol": "IP_OVER_ETHERNET"
                }]
            }]
        }]
    }, {
        "id": "net0_worker",
        "resourceId": "71a3fbd1-f31e-4c2c-b0e2-26267d64a9ee",  #Set the uuid of the network to use
        "extCps": [{
            "cpdId": "workerNode_CP2",
            "cpConfig": [{
                "cpProtocolData": [{
                    "layerProtocol": "IP_OVER_ETHERNET"
                }]
            }]
        }]
    }]
}

Confirm the Instantiate Operation is Successful on OpenStack

You can use Heat CLI to confirm that instantiating Kubernetes cluster with pod-affinity successfully. The confirmation points are shown below.

  1. Confirm that the value of policy attribute in "OS::Nova::ServerGroup" resource created by tacker is 'anti-affinity'.
  2. Confirm that the members attribute in "OS::Nova::ServerGroup" resource created by tacker are the physical_resource_id of worker node VMs.
  3. Confirm that the value of server_groups attribute in worker node VM created by tacker is the physical_resource_id of "OS::Nova::ServerGroup" resource.

After instantiating, the following command can check confirmation points 1 and 2.

  • "OS::Nova::ServerGroup" resource information of pod-affinity:

    $ openstack stack resource show vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a srvgroup --fit
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | Field                  | Value                                                                                                                                                                                                                            |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | attributes             | {'id': '46186a58-5cac-4dd6-a516-d6deb1461f8a', 'name': 'ServerGroup', 'policy': 'anti-affinity', 'rules': {}, 'members': ['51826868-74d6-4ce1-9b0b-157efdfc9490', 'e4bef063-30f9-4f26-b5fc-75d99e46db1e'], 'project_id':         |
    |                        | 'ff61312f72f94c7da3d0c3c4578ad121', 'user_id': '4751fbe7b18a4469bedf89ba0cc09616'}                                                                                                                                               |
    | creation_time          | 2021-04-22T02:47:22Z                                                                                                                                                                                                             |
    | description            |                                                                                                                                                                                                                                  |
    | links                  | [{'href': 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a/4dfd5d41-77c9-4e72-b30f-d06f0ca79ebf/resources/srvgroup', 'rel': 'self'}, {'href':                 |
    |                        | 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a/4dfd5d41-77c9-4e72-b30f-d06f0ca79ebf', 'rel': 'stack'}]                                                      |
    | logical_resource_id    | srvgroup                                                                                                                                                                                                                         |
    | physical_resource_id   | 46186a58-5cac-4dd6-a516-d6deb1461f8a                                                                                                                                                                                             |
    | required_by            | ['worker_instance']                                                                                                                                                                                                        |
    | resource_name          | srvgroup                                                                                                                                                                                                                         |
    | resource_status        | CREATE_COMPLETE                                                                                                                                                                                                                  |
    | resource_status_reason | state changed                                                                                                                                                                                                                    |
    | resource_type          | OS::Nova::ServerGroup                                                                                                                                                                                                            |
    | updated_time           | 2021-04-22T02:47:22Z                                                                                                                                                                                                             |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    $ openstack stack resource list vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a -n 2 --filter type=OS::Nova::Server -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type    | resource_status |
    +---------------+--------------------------------------+------------------+-----------------+
    | workerNode    | 51826868-74d6-4ce1-9b0b-157efdfc9490 | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | e4bef063-30f9-4f26-b5fc-75d99e46db1e | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | d4578afd-9eb6-2ca0-1932-ccd69d763b6b | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 42904925-7d05-e311-3953-dc92c88428b0 | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 282a9ba5-fcbc-3f4b-6ca3-71d383e26134 | OS::Nova::Server | CREATE_COMPLETE |
    +---------------+--------------------------------------+------------------+-----------------+

The following command can check confirmation point 3.

  • "worker node VM" information of pod-affinity:

    $ openstack stack resource list vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a -n 2 --filter type=podaffinity_nested_worker.yaml -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+--------------------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type                  | resource_status |
    +---------------+--------------------------------------+--------------------------------+-----------------+
    | kxogpuzgdcvi  | 3b11dba8-2dab-4ad4-8241-09a0501cab47 | podaffinity_nested_worker.yaml | CREATE_COMPLETE |
    | n5s7ycewii5s  | 4b2ac686-e6ff-4397-88dd-cbba7d2e7a34 | podaffinity_nested_worker.yaml | CREATE_COMPLETE |
    +---------------+--------------------------------------+--------------------------------+-----------------+
    $ openstack stack resource show 3b11dba8-2dab-4ad4-8241-09a0501cab47 workerNode --fit
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | Field                  | Value                                                                                                                                                                                                                            |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | attributes             | {'id': '51826868-74d6-4ce1-9b0b-157efdfc9490', 'name': 'workerNode', 'status': 'ACTIVE', 'tenant_id': 'ff61312f72f94c7da3d0c3c4578ad121', 'user_id': '4751fbe7b18a4469bedf89ba0cc09616', 'metadata': {}, 'hostId':               |
    |                        | 'bdd83b04143e4048e93141cfb5600c39571a94e501564cf7a1380073', 'image': {'id': '959c1e45-e140-407d-aaaf-bb5eea93a828', 'links': [{'rel': 'bookmark', 'href': 'http://192.168.10.115/compute/images/959c1e45-e140-407d-aaaf-         |
    |                        | bb5eea93a828'}]}, 'flavor': {'vcpus': 2, 'ram': 4096, 'disk': 40, 'ephemeral': 0, 'swap': 0, 'original_name': 'm1.medium', 'extra_specs': {'hw_rng:allowed': 'True'}}, 'created': '2021-04-22T02:47:27Z', 'updated':             |
    |                        | '2021-04-22T02:47:36Z', 'addresses': {'net0': [{'version': 4, 'addr': '10.10.0.52', 'OS-EXT-IPS:type': 'fixed', 'OS-EXT-IPS-MAC:mac_addr': 'fa:16:3e:09:34:5f'}]}, 'accessIPv4': '', 'accessIPv6': '', 'links': [{'rel': 'self', |
    |                        | 'href': 'http://192.168.10.115/compute/v2.1/servers/51826868-74d6-4ce1-9b0b-157efdfc9490'}, {'rel': 'bookmark', 'href': 'http://192.168.10.115/compute/servers/51826868-74d6-4ce1-9b0b-157efdfc9490'}], 'OS-DCF:diskConfig':     |
    |                        | 'MANUAL', 'progress': 0, 'OS-EXT-AZ:availability_zone': 'nova', 'config_drive': '', 'key_name': None, 'OS-SRV-USG:launched_at': '2021-04-22T02:47:30.000000', 'OS-SRV-USG:terminated_at': None, 'security_groups': [{'name':     |
    |                        | 'default'}], 'OS-EXT-SRV-ATTR:host': 'compute03', 'OS-EXT-SRV-ATTR:instance_name': 'instance-000003de', 'OS-EXT-SRV-ATTR:hypervisor_hostname': 'compute03', 'OS-EXT-SRV-ATTR:reservation_id': 'r-3wox5r91', 'OS-EXT-SRV-         |
    |                        | ATTR:launch_index': 0, 'OS-EXT-SRV-ATTR:hostname': 'workernode', 'OS-EXT-SRV-ATTR:kernel_id': '', 'OS-EXT-SRV-ATTR:ramdisk_id': '', 'OS-EXT-SRV-ATTR:root_device_name': '/dev/vda', 'OS-EXT-SRV-ATTR:user_data': 'Q29udGVudC1UeX |
    |                        | BlOiBtdWx0aXBhcnQvbWl4ZWQ7IGJvdW5kYXJ5PSI9PT09PT09PT09PT09PT0wMDA5NDg1OTI5MTU3NzU5MzA2PT0iCk1JTUUtVmVyc2lvbjogMS4wCgotLT09PT09PT09PT09PT09PTAwMDk0ODU5MjkxNTc3NTkzMDY9PQpDb250ZW50LVR5cGU6IHRleHQvY2xvdWQtY29uZmlnOyBjaGFyc2V0PS |
    |                        | J1cy1hc2NpaSIKTUlNRS1WZXJzaW9uOiAxLjAKQ29udGVudC1UcmFuc2Zlci1FbmNvZGluZzogN2JpdApDb250ZW50LURpc3Bvc2l0aW9uOiBhdHRhY2htZW50OyBmaWxlbmFtZT0iY2xvdWQtY29uZmlnIgoKCgojIENhcHR1cmUgYWxsIHN1YnByb2Nlc3Mgb3V0cHV0IGludG8gYSBsb2dmaWxlCi |
    |                        | MgVXNlZnVsIGZvciB0cm91Ymxlc2hvb3RpbmcgY2xvdWQtaW5pdCBpc3N1ZXMKb3V0cHV0OiB7YWxsOiAnfCB0ZWUgLWEgL3Zhci9sb2cvY2xvdWQtaW5pdC1vdXRwdXQubG9nJ30KCi==', 'OS-EXT-STS:task_state': None, 'OS-EXT-STS:vm_state': 'active', 'OS-EXT-        |
    |                        | STS:power_state': 1, 'os-extended-volumes:volumes_attached': [], 'host_status': 'UP', 'locked': False, 'locked_reason': None, 'description': None, 'tags': [], 'trusted_image_certificates': None, 'server_groups':              |
    |                        | ['46186a58-5cac-4dd6-a516-d6deb1461f8a'], 'os_collect_config': {}}                                                                                                                                                               |
    | creation_time          | 2021-04-22T02:47:24Z                                                                                                                                                                                                             |
    | description            |                                                                                                                                                                                                                                  |
    | links                  | [{'href': 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a-worker_instance-6wyaj6mgtjlt-kxogpuzgdcvi-                                                   |
    |                        | eutiueiy6e7n/3b11dba8-2dab-4ad4-8241-09a0501cab47/resources/workerNode', 'rel': 'self'}, {'href': 'http://192.168.10.115/heat-                                                                                                   |
    |                        | api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a-worker_instance-6wyaj6mgtjlt-kxogpuzgdcvi-eutiueiy6e7n/3b11dba8-2dab-4ad4-8241-09a0501cab47', 'rel': 'stack'}]                     |
    | logical_resource_id    | workerNode                                                                                                                                                                                                                       |
    | parent_resource        | kxogpuzgdcvi                                                                                                                                                                                                                     |
    | physical_resource_id   | 51826868-74d6-4ce1-9b0b-157efdfc9490                                                                                                                                                                                             |
    | required_by            | []                                                                                                                                                                                                                               |
    | resource_name          | workerNode                                                                                                                                                                                                                       |
    | resource_status        | CREATE_COMPLETE                                                                                                                                                                                                                  |
    | resource_status_reason | state changed                                                                                                                                                                                                                    |
    | resource_type          | OS::Nova::Server                                                                                                                                                                                                                 |
    | updated_time           | 2021-04-22T02:47:24Z                                                                                                                                                                                                             |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Confirm the Instantiate Operation is Successful on Kubernetes

To confirm that the 'CIS-node' label has been added to worker node successfully, you should login to one of the master nodes via ssh in Kubernetes cluster, and use Kubernetes CLI. The confirmation points are shown below.

  1. Confirm that 'CIS-node' label is in the worker node's labels.
  2. Confirm that 'CIS-node' label's value is the Compute Server's name which the worker node deployed on. The key of this value is 'OS-EXT-SRV-ATTR:host' in "worker node VM" information.

After instantiating, the following command can check these confirmation points.

  • worker node information in Kubernetes cluster

    $ kubectl get node --show-labels
    NAME        STATUS   ROLES                  AGE     VERSION   LABELS
    master110   Ready    control-plane,master   5h34m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master110,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    master13    Ready    control-plane,master   5h21m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master13,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    master159   Ready    control-plane,master   5h48m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master159,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    worker52    Ready    <none>                 5h15m   v1.21.0   CIS-node=compute03,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker52,kubernetes.io/os=linux
    worker88    Ready    <none>                 5h10m   v1.21.0   CIS-node=compute01,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker88,kubernetes.io/os=linux

3. Scale out Worker Node with Pod-affinity

The operation steps and methods of scaling out worker node with pod-affinity are the same as those in Scale Kubernetes Worker Nodes.

Confirm the Scaling out Operation is Successful on OpenStack

You can use Heat CLI to confirm that scaling out worker node with pod-affinity has been finished successfully. The confirmation points are shown below.

  1. Confirm that physical_resource_id of scaled-out worker node has been added to members attribute in "OS::Nova::ServerGroup" resource.
  2. Confirm that the value of server_groups attribute in worker node VM scaled out is physical_resource_id of "OS::Nova::ServerGroup" resource.

After scaling out worker node, the following command can check confirmation point 1.

  • "OS::Nova::ServerGroup" resource information of pod-affinity

    $ openstack stack resource show vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a srvgroup --fit
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | Field                  | Value                                                                                                                                                                                                                            |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | attributes             | {'id': '46186a58-5cac-4dd6-a516-d6deb1461f8a', 'name': 'ServerGroup', 'policy': 'anti-affinity', 'rules': {}, 'members': ['51826868-74d6-4ce1-9b0b-157efdfc9490', 'e4bef063-30f9-4f26-b5fc-75d99e46db1e',                        |
    |                        | 'a576d70c-d299-cf83-745a-63a1f49da7d3'], 'project_id': 'ff61312f72f94c7da3d0c3c4578ad121', 'user_id': '4751fbe7b18a4469bedf89ba0cc09616'}                                                                                        |                                                       |
    | creation_time          | 2021-04-22T02:47:22Z                                                                                                                                                                                                             |
    | description            |                                                                                                                                                                                                                                  |
    | links                  | [{'href': 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a/4dfd5d41-77c9-4e72-b30f-d06f0ca79ebf/resources/srvgroup', 'rel': 'self'}, {'href':                 |
    |                        | 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a/4dfd5d41-77c9-4e72-b30f-d06f0ca79ebf', 'rel': 'stack'}]                                                      |
    | logical_resource_id    | srvgroup                                                                                                                                                                                                                         |
    | physical_resource_id   | 46186a58-5cac-4dd6-a516-d6deb1461f8a                                                                                                                                                                                             |
    | required_by            | ['worker_instance']                                                                                                                                                                                                        |
    | resource_name          | srvgroup                                                                                                                                                                                                                         |
    | resource_status        | UPDATE_COMPLETE                                                                                                                                                                                                                  |
    | resource_status_reason | state changed                                                                                                                                                                                                                    |
    | resource_type          | OS::Nova::ServerGroup                                                                                                                                                                                                            |
    | updated_time           | 2021-04-22T03:47:22Z                                                                                                                                                                                                             |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    $ openstack stack resource list vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a -n 2 --filter type=OS::Nova::Server -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type    | resource_status |
    +---------------+--------------------------------------+------------------+-----------------+
    | workerNode    | 51826868-74d6-4ce1-9b0b-157efdfc9490 | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | e4bef063-30f9-4f26-b5fc-75d99e46db1e | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | a576d70c-d299-cf83-745a-63a1f49da7d3 | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | d4578afd-9eb6-2ca0-1932-ccd69d763b6b | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 42904925-7d05-e311-3953-dc92c88428b0 | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 282a9ba5-fcbc-3f4b-6ca3-71d383e26134 | OS::Nova::Server | CREATE_COMPLETE |
    +---------------+--------------------------------------+------------------+-----------------+

The following command can check confirmation point 2. The resource with 'plkz6sfomuhx' resource_name is the one scaled out.

  • "worker node VM" information of pod-affinity

    $ openstack stack resource list vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a -n 2 --filter type=podaffinity_nested_worker.yaml -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+--------------------------------+------------------+
    | resource_name | physical_resource_id                 | resource_type                  | resource_status  |
    +---------------+--------------------------------------+--------------------------------+------------------+
    | kxogpuzgdcvi  | 3b11dba8-2dab-4ad4-8241-09a0501cab47 | podaffinity_nested_worker.yaml | UPDATE_COMPLETE  |
    | n5s7ycewii5s  | 4b2ac686-e6ff-4397-88dd-cbba7d2e7a34 | podaffinity_nested_worker.yaml | UPDATE_COMPLETE  |
    | plkz6sfomuhx  | 24d0076c-672a-e52d-1947-ec8495708b5d | podaffinity_nested_worker.yaml | CREATE_COMPLETE  |
    +---------------+--------------------------------------+--------------------------------+------------------+
    $ openstack stack resource show 24d0076c-672a-e52d-1947-ec8495708b5d workerNode --fit
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | Field                  | Value                                                                                                                                                                                                                            |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | attributes             | {'id': 'a576d70c-d299-cf83-745a-63a1f49da7d3', 'name': 'workerNode', 'status': 'ACTIVE', 'tenant_id': 'ff61312f72f94c7da3d0c3c4578ad121', 'user_id': '4751fbe7b18a4469bedf89ba0cc09616', 'metadata': {}, 'hostId':               |
    |                        | 'bdd83b04143e4048e93141cfb5600c39571a94e501564cf7a1380073', 'image': {'id': '959c1e45-e140-407d-aaaf-bb5eea93a828', 'links': [{'rel': 'bookmark', 'href': 'http://192.168.10.115/compute/images/959c1e45-e140-407d-aaaf-         |
    |                        | bb5eea93a828'}]}, 'flavor': {'vcpus': 2, 'ram': 4096, 'disk': 40, 'ephemeral': 0, 'swap': 0, 'original_name': 'm1.medium', 'extra_specs': {'hw_rng:allowed': 'True'}}, 'created': '2021-04-22T02:47:26Z', 'updated':             |
    |                        | '2021-04-22T02:47:34Z', 'addresses': {'net0': [{'version': 4, 'addr': '10.10.0.46', 'OS-EXT-IPS:type': 'fixed', 'OS-EXT-IPS-MAC:mac_addr': 'fa:16:3e:28:fc:7a'}]}, 'accessIPv4': '', 'accessIPv6': '', 'links': [{'rel': 'self', |
    |                        | 'href': 'http://192.168.10.115/compute/v2.1/servers/a576d70c-d299-cf83-745a-63a1f49da7d3'}, {'rel': 'bookmark', 'href': 'http://192.168.10.115/compute/servers/a576d70c-d299-cf83-745a-63a1f49da7d3'}], 'OS-DCF:diskConfig':     |
    |                        | 'MANUAL', 'progress': 0, 'OS-EXT-AZ:availability_zone': 'nova', 'config_drive': '', 'key_name': None, 'OS-SRV-USG:launched_at': '2021-04-22T02:47:28.000000', 'OS-SRV-USG:terminated_at': None, 'security_groups': [{'name':     |
    |                        | 'default'}], 'OS-EXT-SRV-ATTR:host': 'compute02', 'OS-EXT-SRV-ATTR:instance_name': 'instance-000003dd', 'OS-EXT-SRV-ATTR:hypervisor_hostname': 'compute02', 'OS-EXT-SRV-ATTR:reservation_id': 'r-lvg9ate8', 'OS-EXT-SRV-         |
    |                        | ATTR:launch_index': 0, 'OS-EXT-SRV-ATTR:hostname': 'workernode', 'OS-EXT-SRV-ATTR:kernel_id': '', 'OS-EXT-SRV-ATTR:ramdisk_id': '', 'OS-EXT-SRV-ATTR:root_device_name': '/dev/vda', 'OS-EXT-SRV-ATTR:user_data': 'Q29udGVudC1UeX |
    |                        | BlOiBtdWx0aXBhcnQvbWl4ZWQ7IGJvdW5kYXJ5PSI9PT09PT09PT09PT09PT0wMDA5NDg1OTI5MTU3NzU5MzA2PT0iCk1JTUUtVmVyc2lvbjogMS4wCgotLT09PT09PT09PT09PT09PTAwMDk0ODU5MjkxNTc3NTkzMDY9PQpDb250ZW50LVR5cGU6IHRleHQvY2xvdWQtY29uZmlnOyBjaGFyc2V0PS |
    |                        | J1cy1hc2NpaSIKTUlNRS1WZXJzaW9uOiAxLjAKQ29udGVudC1UcmFuc2Zlci1FbmNvZGluZzogN2JpdApDb250ZW50LURpc3Bvc2l0aW9uOiBhdHRhY2htZW50OyBmaWxlbmFtZT0iY2xvdWQtY29uZmlnIgoKCgojIENhcHR1cmUgYWxsIHN1YnByb2Nlc3Mgb3V0cHV0IGludG8gYSBsb2dmaWxlCi |
    |                        | MgVXNlZnVsIGZvciB0cm91Ymxlc2hvb3RpbmcgY2xvdWQtaW5pdCBpc3N1ZXMKb3V0cHV0OiB7YWxsOiAnfCB0ZWUgLWEgL3Zhci9sb2cvY2xvdWQtaW5pdC1vdXRwdXQubG9nJ30KCi==', 'OS-EXT-STS:task_state': None, 'OS-EXT-STS:vm_state': 'active', 'OS-EXT-        |
    |                        | STS:power_state': 1, 'os-extended-volumes:volumes_attached': [], 'host_status': 'UP', 'locked': False, 'locked_reason': None, 'description': None, 'tags': [], 'trusted_image_certificates': None, 'server_groups':              |
    |                        | ['46186a58-5cac-4dd6-a516-d6deb1461f8a'], 'os_collect_config': {}}                                                                                                                                                               |
    | creation_time          | 2021-04-22T02:47:23Z                                                                                                                                                                                                             |
    | description            |                                                                                                                                                                                                                                  |
    | links                  | [{'href': 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a-worker_instance-6wyaj6mgtjlt-plkz6sfomuhx-tvegcyfieq7m/24d0076c-672a-e52d-1947-              |
    |                        | ec8495708b5d/resources/workerNode', 'rel': 'self'}, {'href': 'http://192.168.10.115/heat-                                                                                                                                        |
    |                        | api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a-worker_instance-6wyaj6mgtjlt-plkz6sfomuhx-tvegcyfieq7m/24d0076c-672a-e52d-1947-ec8495708b5d', 'rel': 'stack'}]                     |
    | logical_resource_id    | workerNode                                                                                                                                                                                                                       |
    | parent_resource        | plkz6sfomuhx                                                                                                                                                                                                                     |
    | physical_resource_id   | a576d70c-d299-cf83-745a-63a1f49da7d3                                                                                                                                                                                             |
    | required_by            | []                                                                                                                                                                                                                               |
    | resource_name          | workerNode                                                                                                                                                                                                                       |
    | resource_status        | CREATE_COMPLETE                                                                                                                                                                                                                  |
    | resource_status_reason | state changed                                                                                                                                                                                                                    |
    | resource_type          | OS::Nova::Server                                                                                                                                                                                                                 |
    | updated_time           | 2021-04-22T03:47:23Z                                                                                                                                                                                                             |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Confirm the Scaling out Operation is Successful on Kubernetes

To confirm that the 'CIS-node' label has been added to worker node scaled out successfully, you should login to one of the master nodes via ssh in Kubernetes cluster, and use Kubernetes CLI. The confirmation points are shown below.

  1. Confirm that 'CIS-node' label is in the scaled out worker node's labels.
  2. Confirm that 'CIS-node' label's value is the Compute Server's name which the worker node deployed on. The key of this value is 'OS-EXT-SRV-ATTR:host' in "worker node VM" information.

After scaling out, the following command can check these confirmation points. The worker46 is the scaled out worker node.

  • worker node information in Kubernetes cluster

    $ kubectl get node --show-labels
    NAME        STATUS   ROLES                  AGE     VERSION   LABELS
    master110   Ready    control-plane,master   5h34m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master110,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    master13    Ready    control-plane,master   5h21m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master13,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    master159   Ready    control-plane,master   5h48m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master159,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    worker52    Ready    <none>                 5h15m   v1.21.0   CIS-node=compute01,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker52,kubernetes.io/os=linux
    worker88    Ready    <none>                 5h10m   v1.21.0   CIS-node=compute03,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker88,kubernetes.io/os=linux
    worker46    Ready    <none>                 2m17s   v1.21.0   CIS-node=compute02,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker46,kubernetes.io/os=linux

4. Heal Worker Node with Pod-affinity

The operation steps and methods of healing worker node with pod-affinity are the same as those in Heal a Worker Node of Heal Kubernetes Master/Worker Nodes.

Confirm the Healing Operation is Successful on OpenStack

To confirm that healing worker node with pod-affinity is successful, you can use Heat CLI. The confirmation points are shown below.

  1. Confirm that physical_resource_id pointing to the healed worker node has been changed in members attribute of "OS::Nova::ServerGroup" resource.
  2. Confirm that the value of server_groups attribute in worker node VM healed is physical_resource_id of "OS::Nova::ServerGroup" resource.

After healing worker node, the following command can check confirmation point 1. physical_resource_id changed in members is 'a576d70c-d299-cf83-745a-63a1f49da7d3'.

  • "OS::Nova::ServerGroup" resource information of pod-affinity

    $ openstack stack resource show vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a srvgroup --fit
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | Field                  | Value                                                                                                                                                                                                                            |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | attributes             | {'id': '46186a58-5cac-4dd6-a516-d6deb1461f8a', 'name': 'ServerGroup', 'policy': 'anti-affinity', 'rules': {}, 'members': ['51826868-74d6-4ce1-9b0b-157efdfc9490', 'e4bef063-30f9-4f26-b5fc-75d99e46db1e',                        |
    |                        | '4cb1324f-356d-418a-7935-b0b34c3b17ed'], 'project_id': 'ff61312f72f94c7da3d0c3c4578ad121', 'user_id': '4751fbe7b18a4469bedf89ba0cc09616'}                                                                                        |                                                       |
    | creation_time          | 2021-04-22T02:47:22Z                                                                                                                                                                                                             |
    | description            |                                                                                                                                                                                                                                  |
    | links                  | [{'href': 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a/4dfd5d41-77c9-4e72-b30f-d06f0ca79ebf/resources/srvgroup', 'rel': 'self'}, {'href':                 |
    |                        | 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a/4dfd5d41-77c9-4e72-b30f-d06f0ca79ebf', 'rel': 'stack'}]                                                      |
    | logical_resource_id    | srvgroup                                                                                                                                                                                                                         |
    | physical_resource_id   | 46186a58-5cac-4dd6-a516-d6deb1461f8a                                                                                                                                                                                             |
    | required_by            | ['worker_instance']                                                                                                                                                                                                        |
    | resource_name          | srvgroup                                                                                                                                                                                                                         |
    | resource_status        | UPDATE_COMPLETE                                                                                                                                                                                                                  |
    | resource_status_reason | state changed                                                                                                                                                                                                                    |
    | resource_type          | OS::Nova::ServerGroup                                                                                                                                                                                                            |
    | updated_time           | 2021-04-22T04:15:22Z                                                                                                                                                                                                             |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    $ openstack stack resource list vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a -n 2 --filter type=OS::Nova::Server -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+------------------+-----------------+
    | resource_name | physical_resource_id                 | resource_type    | resource_status |
    +---------------+--------------------------------------+------------------+-----------------+
    | workerNode    | 51826868-74d6-4ce1-9b0b-157efdfc9490 | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | e4bef063-30f9-4f26-b5fc-75d99e46db1e | OS::Nova::Server | CREATE_COMPLETE |
    | workerNode    | 4cb1324f-356d-418a-7935-b0b34c3b17ed | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | d4578afd-9eb6-2ca0-1932-ccd69d763b6b | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 42904925-7d05-e311-3953-dc92c88428b0 | OS::Nova::Server | CREATE_COMPLETE |
    | masterNode    | 282a9ba5-fcbc-3f4b-6ca3-71d383e26134 | OS::Nova::Server | CREATE_COMPLETE |
    +---------------+--------------------------------------+------------------+-----------------+

The following command can check confirmation point 2. The resource with name 'workerNode' in resource with 'plkz6sfomuhx' resource_name is the VM healed.

  • "worker node VM" information of pod-affinity

    $ openstack stack resource list vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a -n 2 --filter type=podaffinity_nested_worker.yaml -c resource_name -c physical_resource_id -c resource_type -c resource_status
    +---------------+--------------------------------------+--------------------------------+------------------+
    | resource_name | physical_resource_id                 | resource_type                  | resource_status  |
    +---------------+--------------------------------------+--------------------------------+------------------+
    | kxogpuzgdcvi  | 3b11dba8-2dab-4ad4-8241-09a0501cab47 | podaffinity_nested_worker.yaml | UPDATE_COMPLETE  |
    | n5s7ycewii5s  | 4b2ac686-e6ff-4397-88dd-cbba7d2e7a34 | podaffinity_nested_worker.yaml | UPDATE_COMPLETE  |
    | plkz6sfomuhx  | 24d0076c-672a-e52d-1947-ec8495708b5d | podaffinity_nested_worker.yaml | CREATE_COMPLETE  |
    +---------------+--------------------------------------+--------------------------------+------------------+
    $ openstack stack resource show 24d0076c-672a-e52d-1947-ec8495708b5d workerNode --fit
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | Field                  | Value                                                                                                                                                                                                                            |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | attributes             | {'id': '4cb1324f-356d-418a-7935-b0b34c3b17ed', 'name': 'workerNode', 'status': 'ACTIVE', 'tenant_id': 'ff61312f72f94c7da3d0c3c4578ad121', 'user_id': '4751fbe7b18a4469bedf89ba0cc09616', 'metadata': {}, 'hostId':               |
    |                        | 'bdd83b04143e4048e93141cfb5600c39571a94e501564cf7a1380073', 'image': {'id': '959c1e45-e140-407d-aaaf-bb5eea93a828', 'links': [{'rel': 'bookmark', 'href': 'http://192.168.10.115/compute/images/959c1e45-e140-407d-aaaf-         |
    |                        | bb5eea93a828'}]}, 'flavor': {'vcpus': 2, 'ram': 4096, 'disk': 40, 'ephemeral': 0, 'swap': 0, 'original_name': 'm1.medium', 'extra_specs': {'hw_rng:allowed': 'True'}}, 'created': '2021-04-22T02:47:26Z', 'updated':             |
    |                        | '2021-04-22T02:47:34Z', 'addresses': {'net0': [{'version': 4, 'addr': '10.10.0.46', 'OS-EXT-IPS:type': 'fixed', 'OS-EXT-IPS-MAC:mac_addr': 'fa:16:3e:28:fc:7a'}]}, 'accessIPv4': '', 'accessIPv6': '', 'links': [{'rel': 'self', |
    |                        | 'href': 'http://192.168.10.115/compute/v2.1/servers/4cb1324f-356d-418a-7935-b0b34c3b17ed'}, {'rel': 'bookmark', 'href': 'http://192.168.10.115/compute/servers/4cb1324f-356d-418a-7935-b0b34c3b17ed'}], 'OS-DCF:diskConfig':     |
    |                        | 'MANUAL', 'progress': 0, 'OS-EXT-AZ:availability_zone': 'nova', 'config_drive': '', 'key_name': None, 'OS-SRV-USG:launched_at': '2021-04-22T02:47:28.000000', 'OS-SRV-USG:terminated_at': None, 'security_groups': [{'name':     |
    |                        | 'default'}], 'OS-EXT-SRV-ATTR:host': 'compute02', 'OS-EXT-SRV-ATTR:instance_name': 'instance-000003dd', 'OS-EXT-SRV-ATTR:hypervisor_hostname': 'compute02', 'OS-EXT-SRV-ATTR:reservation_id': 'r-lvg9ate8', 'OS-EXT-SRV-         |
    |                        | ATTR:launch_index': 0, 'OS-EXT-SRV-ATTR:hostname': 'workernode', 'OS-EXT-SRV-ATTR:kernel_id': '', 'OS-EXT-SRV-ATTR:ramdisk_id': '', 'OS-EXT-SRV-ATTR:root_device_name': '/dev/vda', 'OS-EXT-SRV-ATTR:user_data': 'Q29udGVudC1UeX |
    |                        | BlOiBtdWx0aXBhcnQvbWl4ZWQ7IGJvdW5kYXJ5PSI9PT09PT09PT09PT09PT0wMDA5NDg1OTI5MTU3NzU5MzA2PT0iCk1JTUUtVmVyc2lvbjogMS4wCgotLT09PT09PT09PT09PT09PTAwMDk0ODU5MjkxNTc3NTkzMDY9PQpDb250ZW50LVR5cGU6IHRleHQvY2xvdWQtY29uZmlnOyBjaGFyc2V0PS |
    |                        | J1cy1hc2NpaSIKTUlNRS1WZXJzaW9uOiAxLjAKQ29udGVudC1UcmFuc2Zlci1FbmNvZGluZzogN2JpdApDb250ZW50LURpc3Bvc2l0aW9uOiBhdHRhY2htZW50OyBmaWxlbmFtZT0iY2xvdWQtY29uZmlnIgoKCgojIENhcHR1cmUgYWxsIHN1YnByb2Nlc3Mgb3V0cHV0IGludG8gYSBsb2dmaWxlCi |
    |                        | MgVXNlZnVsIGZvciB0cm91Ymxlc2hvb3RpbmcgY2xvdWQtaW5pdCBpc3N1ZXMKb3V0cHV0OiB7YWxsOiAnfCB0ZWUgLWEgL3Zhci9sb2cvY2xvdWQtaW5pdC1vdXRwdXQubG9nJ30KCi==', 'OS-EXT-STS:task_state': None, 'OS-EXT-STS:vm_state': 'active', 'OS-EXT-        |
    |                        | STS:power_state': 1, 'os-extended-volumes:volumes_attached': [], 'host_status': 'UP', 'locked': False, 'locked_reason': None, 'description': None, 'tags': [], 'trusted_image_certificates': None, 'server_groups':              |
    |                        | ['46186a58-5cac-4dd6-a516-d6deb1461f8a'], 'os_collect_config': {}}                                                                                                                                                               |
    | creation_time          | 2021-04-22T04:15:23Z                                                                                                                                                                                                             |
    | description            |                                                                                                                                                                                                                                  |
    | links                  | [{'href': 'http://192.168.10.115/heat-api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a-worker_instance-6wyaj6mgtjlt-plkz6sfomuhx-tvegcyfieq7m/24d0076c-672a-e52d-1947-              |
    |                        | ec8495708b5d/resources/workerNode', 'rel': 'self'}, {'href': 'http://192.168.10.115/heat-                                                                                                                                        |
    |                        | api/v1/ff61312f72f94c7da3d0c3c4578ad121/stacks/vnf-2456188c-d882-4de2-8cd0-54a7a2ea4e6a-worker_instance-6wyaj6mgtjlt-plkz6sfomuhx-tvegcyfieq7m/24d0076c-672a-e52d-1947-ec8495708b5d', 'rel': 'stack'}]                     |
    | logical_resource_id    | workerNode                                                                                                                                                                                                                       |
    | parent_resource        | plkz6sfomuhx                                                                                                                                                                                                                     |
    | physical_resource_id   | 4cb1324f-356d-418a-7935-b0b34c3b17ed                                                                                                                                                                                             |
    | required_by            | []                                                                                                                                                                                                                               |
    | resource_name          | workerNode                                                                                                                                                                                                                       |
    | resource_status        | CREATE_COMPLETE                                                                                                                                                                                                                  |
    | resource_status_reason | state changed                                                                                                                                                                                                                    |
    | resource_type          | OS::Nova::Server                                                                                                                                                                                                                 |
    | updated_time           | 2021-04-22T04:15:23Z                                                                                                                                                                                                             |
    +------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Confirm the Healing Operation is Successful on Kubernetes

To confirm that the 'CIS-node' label has been added to worker node healed successfully, you should login to one of the master nodes via ssh in Kubernetes cluster, and use Kubernetes CLI. The confirmation points are shown below.

  1. Confirm that 'CIS-node' label is in the healed worker node's labels.
  2. Confirm that 'CIS-node' label's value is the Compute Server's name which the worker node deployed on. The key of this value is 'OS-EXT-SRV-ATTR:host' in "worker node VM" information.

After healing, the following command can check these confirmation points. The worker46 is the healed worker node.

  • worker node information in Kubernetes cluster

    $ kubectl get node --show-labels
    NAME        STATUS   ROLES                  AGE     VERSION   LABELS
    master110   Ready    control-plane,master   5h34m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master110,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    master13    Ready    control-plane,master   5h21m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master13,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    master159   Ready    control-plane,master   5h48m   v1.21.0   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=master159,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=,node.kubernetes.io/exclude-from-external-load-balancers=
    worker52    Ready    <none>                 5h15m   v1.21.0   CIS-node=compute01,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker52,kubernetes.io/os=linux
    worker88    Ready    <none>                 5h10m   v1.21.0   CIS-node=compute03,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker88,kubernetes.io/os=linux
    worker46    Ready    <none>                 1m33s   v1.21.0   CIS-node=compute02,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker46,kubernetes.io/os=linux

Limitations

  1. If you deploy a single master node Kubernetes cluster, you cannot heal the master node.
  2. This user guide provides a VNF Package in format of UserData. You can also use TOSCA based VNF Package in the manner of SOL001 v2.6.1, but it only supports single master case and the scaling operation is not supported.

Reference


  1. https://forge.etsi.org/rep/nfv/SOL001