RETIRED, Tricircle is to provide networking automation across Neutron.
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tricircle/doc/source/installation.rst

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Installation with pip

At the command line:

$ pip install tricircle

Or, if you have virtualenvwrapper installed:

$ mkvirtualenv tricircle
$ pip install tricircle

Single node installation with DevStack

Now the Tricircle can be played with DevStack.

'admin-openrc' is used to create environment variable as the following:

export OS_PROJECT_DOMAIN_ID=default
export OS_USER_DOMAIN_ID=default
export OS_PROJECT_NAME=admin
export OS_TENANT_NAME=admin
export OS_USERNAME=admin
export OS_PASSWORD=password #change password as you set in your own environment
export OS_AUTH_URL=http://127.0.0.1:5000
export OS_IDENTITY_API_VERSION=3
export OS_IMAGE_API_VERSION=2
export OS_REGION_NAME=RegionOne
  • 5 Check if services have been correctly registered. Run "openstack endpoint list" and you should get output look like as following:

    +----------------------------------+-----------+--------------+----------------+
    | ID                               | Region    | Service Name | Service Type   |
    +----------------------------------+-----------+--------------+----------------+
    | 230059e8533e4d389e034fd68257034b | RegionOne | glance       | image          |
    | 25180a0a08cb41f69de52a7773452b28 | RegionOne | nova         | compute        |
    | bd1ed1d6f0cc42398688a77bcc3bda91 | Pod1      | neutron      | network        |
    | 673736f54ec147b79e97c395afe832f9 | RegionOne | ec2          | ec2            |
    | fd7f188e2ba04ebd856d582828cdc50c | RegionOne | neutron      | network        |
    | ffb56fd8b24a4a27bf6a707a7f78157f | RegionOne | keystone     | identity       |
    | 88da40693bfa43b9b02e1478b1fa0bc6 | Pod1      | nova         | compute        |
    | f35d64c2ddc44c16a4f9dfcd76e23d9f | RegionOne | nova_legacy  | compute_legacy |
    | 8759b2941fe7469e9651de3f6a123998 | RegionOne | tricircle    | Cascading      |
    +----------------------------------+-----------+--------------+----------------+

    "RegionOne" is the region you set in local.conf via REGION_NAME, whose default value is "RegionOne", we use it as the region for the Tricircle instance; "Pod1" is the region set via "POD_REGION_NAME", new configuration option introduced by the Tricircle, we use it as the bottom OpenStack instance.

  • 6 Create pod instances for Tricircle and bottom OpenStack. The "token" can be obtained from the Keystone. We can use the command to get the "token" as follows:

    openstack token issue

    The commands to create pod instances for the Tricircle and bottom OpenStack:

    curl -X POST http://127.0.0.1:19999/v1.0/pods -H "Content-Type: application/json" \
        -H "X-Auth-Token: $token" -d '{"pod": {"pod_name":  "RegionOne"}}'
    
    curl -X POST http://127.0.0.1:19999/v1.0/pods -H "Content-Type: application/json" \
        -H "X-Auth-Token: $token" -d '{"pod": {"pod_name":  "Pod1", "az_name": "az1"}}'

    Pay attention to "pod_name" parameter we specify when creating pod. Pod name should exactly match the region name registered in Keystone since it is used by the Tricircle to route API request. In the above commands, we create pods named "RegionOne" and "Pod1" for the Tricircle instance and bottom OpenStack instance.

    The Tricircle API service will automatically create an aggregate when user creates a bottom pod, so command "nova aggregate-list" will show the following result:

    +----+----------+-------------------+
    | Id | Name     | Availability Zone |
    +----+----------+-------------------+
    | 1  | ag_Pod1  | az1               |
    +----+----------+-------------------+
  • 7 Create necessary resources to boot a virtual machine:

    nova flavor-create test 1 1024 10 1
    neutron net-create net1
    neutron subnet-create net1 10.0.0.0/24
    neutron net-list
    glance image-list

    Note that flavor mapping has not been implemented yet so the created flavor is just record saved in database as metadata. Actual flavor is saved in bottom OpenStack instance.

  • 8 Boot a virtual machine:

    nova boot --flavor 1 --image $image_id --nic net-id=$net_id --availability-zone az1 vm1
  • 9 Create, list, show and delete volume:

    cinder --debug create --availability-zone=az1 1
    cinder --debug list
    cinder --debug show $volume_id
    cinder --debug delete $volume_id
    cinder --debug list
  • 10 Attach the volume to a server:

    cinder create --availability-zone=az1 1
    cinder list
    nova list
    nova volume-attach $vm_id $volume_id
    cinder volume show $volume_id

Verification with script

A sample of admin-openrc.sh and an installation verification script can be found in devstack/ in the Tricircle root folder. 'admin-openrc.sh' is used to create environment variables for the admin user as the following:

export OS_PROJECT_DOMAIN_ID=default
export OS_USER_DOMAIN_ID=default
export OS_PROJECT_NAME=admin
export OS_TENANT_NAME=admin
export OS_USERNAME=admin
export OS_PASSWORD=password #change password as you set in your own environment
export OS_AUTH_URL=http://127.0.0.1:5000
export OS_IDENTITY_API_VERSION=3
export OS_IMAGE_API_VERSION=2
export OS_REGION_NAME=RegionOne

The command to use the admin-openrc.sh is:

source tricircle/devstack/admin-openrc.sh

'verify_top_install.sh' script is to quickly verify the installation of the Tricircle in Top OpenStack as the step 5-9 above and save the output to logs.

Before verifying the installation, you should modify the script based on your own environment.

  • 1 The default post URL is 127.0.0.1, change it if needed.
  • 2 The default create net1's networ address is 10.0.0.0/24, change it if needed.

Then you do the following steps to verify:

cd tricircle/devstack/
./verify_top_install.sh 2>&1 | tee logs

Two nodes installation with DevStack (Local network type)

Introduction

Now the Tricircle supports cross-pod l3 networking, all cross OpenStack L3 networking in this part means L3 networking for local network type. For "local network", the network will be only presented in one bottom pod. If a VM in one pod tries to attach to a local network in another pod, it should be failed. So cross-pod L2 networking is not supported in local network.

To achieve cross-pod l3 networking, the Tricircle utilizes a shared provider VLAN network at first phase. We are considering later using VxLAN network or multi-segment VLAN network for L3 networking purpose. When a subnet is attached to a router in top pod, the Tricircle not only creates corresponding subnet and router in bottom pod, but also creates a VLAN type "bridge" network. Both tenant network and "bridge" network are attached to bottom router. Each tenant will have one allocated VLAN, which is shared by the tenant's "bridge" networks across bottom pods. The CIDRs of "bridge" networks for one tenant are also the same, so the router interfaces in "bridge" networks across different bottom pods can communicate with each other via the provider VLAN network. By adding an extra route as following:

destination: CIDR of tenant network in another bottom pod
nexthop: "bridge" network interface ip in another bottom pod

when a server sends a packet whose receiver is in another network and in another bottom pod, the packet first goes to router namespace, then is forwarded to the router namespace in another bottom pod according to the extra route, at last the packet is sent to the target server. This configuration job is triggered when user attaches a subnet to a router in top pod and finished asynchronously.

This part of installation guide focuses on cross-pod l3 networking for local network.

Prerequisite

To play cross-pod L3 networking, two nodes are needed. One to run Tricircle and one bottom pod, the other one to run another bottom pod. Both nodes have two network interfaces, for management and provider VLAN network. For VLAN network, the physical network infrastructure should support VLAN tagging. If you would like to try north-south networking, too, you should prepare one more network interface in the second node for external network. In this guide, the external network is also vlan type, so the local.conf sample is based on vlan type external network setup.

Setup

In node1,

  • 1 Git clone DevStack.

  • 2 Git clone Tricircle, or just download devstack/local.conf.node_1.sample.

  • 3 Copy devstack/local.conf.node_1.sample to DevStack folder and rename it to local.conf, change password in the file if needed.

  • 4 Change the following options according to your environment:

    HOST_IP=10.250.201.24

    change to your management interface ip:

    Q_ML2_PLUGIN_VLAN_TYPE_OPTIONS=(network_vlan_ranges=bridge:2001:3000)

    the format is (network_vlan_ranges=<physical network name>:<min vlan>:<max vlan>), you can change physical network name, but remember to adapt your change to the commands showed in this guide; also, change min vlan and max vlan to adapt the vlan range your physical network supports:

    OVS_BRIDGE_MAPPINGS=bridge:br-bridge

    the format is <physical network name>:<ovs bridge name>, you can change these names, but remember to adapt your change to the commands showed in this guide:

    Q_USE_PROVIDERNET_FOR_PUBLIC=True

    use this option if you would like to try L3 north-south networking.

  • 5 Create OVS bridge and attach the VLAN network interface to it:

    sudo ovs-vsctl add-br br-bridge
    sudo ovs-vsctl add-port br-bridge eth1

    br-bridge is the OVS bridge name you configure on OVS_PHYSICAL_BRIDGE, eth1 is the device name of your VLAN network interface

  • 6 Run DevStack.

  • 7 After DevStack successfully starts, begin to setup node2.

In node2,

  • 1 Git clone DevStack.

  • 2 Git clone Tricircle, or just download devstack/local.conf.node_2.sample.

  • 3 Copy devstack/local.conf.node_2.sample to DevStack folder and rename it to local.conf, change password in the file if needed.

  • 4 Change the following options according to your environment:

    HOST_IP=10.250.201.25

    change to your management interface ip:

    KEYSTONE_SERVICE_HOST=10.250.201.24

    change to management interface ip of node1:

    KEYSTONE_AUTH_HOST=10.250.201.24

    change to management interface ip of node1:

    GLANCE_SERVICE_HOST=10.250.201.24

    change to management interface ip of node1:

    Q_ML2_PLUGIN_VLAN_TYPE_OPTIONS=(network_vlan_ranges=bridge:2001:3000,extern:3001:4000)

    the format is (network_vlan_ranges=<physical network name>:<min vlan>:<max vlan>), you can change physical network name, but remember to adapt your change to the commands showed in this guide; also, change min vlan and max vlan to adapt the vlan range your physical network supports:

    OVS_BRIDGE_MAPPINGS=bridge:br-bridge,extern:br-ext

    the format is <physical network name>:<ovs bridge name>, you can change these names, but remember to adapt your change to the commands showed in this guide:

    Q_USE_PROVIDERNET_FOR_PUBLIC=True

    use this option if you would like to try L3 north-south networking.

    In this guide, we define two physical networks in node2, one is "bridge" for bridge network, the other one is "extern" for external network. If you do not want to try L3 north-south networking, you can simply remove the "extern" part. The external network type we use in the guide is vlan, if you want to use other network type like flat, please refer to [DevStack document](http://docs.openstack.org/developer/devstack/).

  • 5 Create OVS bridge and attach the VLAN network interface to it:

    sudo ovs-vsctl add-br br-bridge
    sudo ovs-vsctl add-port br-bridge eth1

    br-bridge is the OVS bridge name you configure on OVS_PHYSICAL_BRIDGE, eth1 is the device name of your VLAN network interface

  • 6 Run DevStack.

  • 7 After DevStack successfully starts, the setup is finished.

How to play

All the following operations are performed in node1.

  • 1 After the setup is finished, we also need to create environment variables for the admin user. In DevStack folder, create a file admin-openrc, and copy the content of https://github.com/openstack/tricircle/blob/master/devstack/admin-openrc.sh to the admin-openrc, change the password in the file if needed. Then run the following command to set the environment variables:

    source admin-openrc
  • 2 Check if services have been correctly registered. Run "openstack endpoint list" and you should get similar output as following:

    +----------------------------------+-----------+--------------+----------------+
    | ID                               | Region    | Service Name | Service Type   |
    +----------------------------------+-----------+--------------+----------------+
    | 1fadbddef9074f81b986131569c3741e | RegionOne | tricircle    | Cascading      |
    | a5c5c37613244cbab96230d9051af1a5 | RegionOne | ec2          | ec2            |
    | 809a3f7282f94c8e86f051e15988e6f5 | Pod2      | neutron      | network        |
    | e6ad9acc51074f1290fc9d128d236bca | Pod1      | neutron      | network        |
    | aee8a185fa6944b6860415a438c42c32 | RegionOne | keystone     | identity       |
    | 280ebc45bf9842b4b4156eb5f8f9eaa4 | RegionOne | glance       | image          |
    | aa54df57d7b942a1a327ed0722dba96e | Pod2      | nova_legacy  | compute_legacy |
    | aa25ae2a3f5a4e4d8bc0cae2f5fbb603 | Pod2      | nova         | compute        |
    | 932550311ae84539987bfe9eb874dea3 | RegionOne | nova_legacy  | compute_legacy |
    | f89fbeffd7e446d0a552e2a6cf7be2ec | Pod1      | nova         | compute        |
    | e2e19c164060456f8a1e75f8d3331f47 | Pod2      | ec2          | ec2            |
    | de698ad5c6794edd91e69f0e57113e97 | RegionOne | nova         | compute        |
    | 8a4b2332d2a4460ca3f740875236a967 | Pod2      | keystone     | identity       |
    | b3ad80035f8742f29d12df67bdc2f70c | RegionOne | neutron      | network        |
    +----------------------------------+-----------+--------------+----------------+

    "RegionOne" is the region you set in local.conf via REGION_NAME in node1, whose default value is "RegionOne", we use it as the region for Tricircle; "Pod1" is the region set via POD_REGION_NAME, new configuration option introduced by Tricircle, we use it as the bottom OpenStack; "Pod2" is the region you set via REGION_NAME in node2, we use it as another bottom OpenStack. In node2, you also need to set KEYSTONE_REGION_NAME the same as REGION_NAME in node1, which is "RegionOne" in this example. So services in node2 can interact with Keystone service in RegionOne.

  • 3 Create pod instances for Tricircle and bottom OpenStack, the "token" can be obtained from the Keystone:

    curl -X POST http://127.0.0.1:19999/v1.0/pods -H "Content-Type: application/json" \
        -H "X-Auth-Token: $token" -d '{"pod": {"pod_name":  "RegionOne"}}'
    
    curl -X POST http://127.0.0.1:19999/v1.0/pods -H "Content-Type: application/json" \
        -H "X-Auth-Token: $token" -d '{"pod": {"pod_name":  "Pod1", "az_name": "az1"}}'
    
    curl -X POST http://127.0.0.1:19999/v1.0/pods -H "Content-Type: application/json" \
        -H "X-Auth-Token: $token" -d '{"pod": {"pod_name":  "Pod2", "az_name": "az2"}}'
  • 4 Create network with AZ scheduler hints specified:

    neutron net-create --availability-zone-hint az1 net1
    neutron net-create --availability-zone-hint az2 net2

    We use "availability_zone_hints" attribute for user to specify the bottom pod he wants to create the bottom network.

    Here we create two networks separately bound to Pod1 and Pod2.

  • 5 Create necessary resources to boot virtual machines:

    nova flavor-create test 1 1024 10 1
    neutron subnet-create net1 10.0.1.0/24
    neutron subnet-create net2 10.0.2.0/24
    neutron net-list
    glance image-list
  • 6 Boot virtual machines:

    nova boot --flavor 1 --image $image_id --nic net-id=$net1_id --availability-zone az1 vm1
    nova boot --flavor 1 --image $image_id --nic net-id=$net2_id --availability-zone az2 vm2
  • 7 Create router and attach interface:

    neutron router-create router
    neutron router-interface-add router $subnet1_id
    neutron router-interface-add router $subnet2_id
  • 8 Launch VNC console and check connectivity By now, two networks are connected by the router, the two virtual machines should be able to communicate with each other, we can launch a VNC console to check. Currently Tricircle doesn't support VNC proxy, we need to go to bottom OpenStack to obtain a VNC console:

    nova --os-region-name Pod1 get-vnc-console vm1 novnc
    nova --os-region-name Pod2 get-vnc-console vm2 novnc

    Login one virtual machine via VNC and you should find it can "ping" the other virtual machine. Default security group is applied so no need to configure security group rule.

North-South Networking

Before running DevStack in node2, you need to create another ovs bridge for external network and then attach port:

sudo ovs-vsctl add-br br-ext
sudo ovs-vsctl add-port br-ext eth2

Below listed the operations related to north-south networking.

  • 1 Create external network:

    curl -X POST http://127.0.0.1:9696/v2.0/networks -H "Content-Type: application/json" \
        -H "X-Auth-Token: $token" \
        -d '{"network": {"name": "ext-net", "admin_state_up": true, "router:external": true,  "provider:network_type": "vlan", "provider:physical_network": "extern", "availability_zone_hints": ["Pod2"]}}'

    Pay attention that when creating external network, we still need to pass "availability_zone_hints" parameter, but the value we pass is the name of pod, not the name of availability zone.

Currently external network needs to be created before attaching subnet to the router, because plugin needs to utilize external network information to setup bridge network when handling interface adding operation. This limitation will be removed later.

  • 2 Create external subnet:

    neutron subnet-create --name ext-subnet --disable-dhcp ext-net 163.3.124.0/24
  • 3 Set router external gateway:

    neutron router-gateway-set router ext-net

Now virtual machine in the subnet attached to the router should be able to "ping" machines in the external network. In our test, we use hypervisor tool to directly start a virtual machine in the external network to check the network connectivity.

  • 4 Create floating ip:

    neutron floatingip-create ext-net
  • 5 Associate floating ip:

    neutron floatingip-list
    neutron port-list
    neutron floatingip-associate $floatingip_id $port_id

Now you should be able to access virtual machine with floating ip bound from the external network.

Verification with script

A sample of admin-openrc.sh and an installation verification script can be found in devstack/ directory. And a demo blog with virtualbox can be found in https://wiki.openstack.org/wiki/Play_tricircle_with_virtualbox

Script 'verify_cross_pod_install.sh' is to quickly verify the installation of the Tricircle in Cross Pod OpenStack as the contents above and save the output to logs.

Before verifying the installation, some parameters should be modified to your own environment.

  • 1 The default URL is 127.0.0.1, change it if needed,
  • 2 This script create a external network 10.50.11.0/26 according to the work environment, change it if needed.
  • 3 This script create 2 subnets 10.0.1.0/24 and 10.0.2.0/24, Change these if needed.
  • 4 The default created floating-ip is attached to the VM with port 10.0.2.3 created by the subnets, modify it according to your environment.

Then do the followings in Node1 OpenStack to verify network functions:

cd tricircle/devstack/
./verify_cross_pod_install.sh 2>&1 | tee logs

Two nodes installation with DevStack (Shared VLAN network type)

As the first step to support cross-pod L2 networking, we have added shared VLAN network type to the Tricircle. If you have already set up cross-pod L3 networking in your environment, you can directly try out cross-pod L2 networking with shared VLAN network since by default Neutron server uses the same physical network to create shared VLAN network as the bridge network used in cross-pod L3 networking.

After you prepare two nodes and finish the creating about the pod instances for the Tricircle and bottom OpenStack accoding to the above method. You can create network in Shared VLAN network type(No AZ parameter in the following command means the network will be able spanning into all AZs):

neutron net-create --provider:network_type shared_vlan net1
neutron net-create --provider:network_type shared_vlan net2

After you create the network, you can continue deploying according to the above section. After all steps are finished, VMs should be able to ping each other if they are attached to the same network, no matter the VM is in which bottom OpenStack.