======================== ETSI NFV-SOL CNF Healing ======================== This document describes how to heal CNF in Tacker. Prerequisites ------------- The following packages should be installed: * tacker * python-tackerclient The procedure of prepare for healing operation that from "register VIM" to "Instantiate VNF", basically refer to :doc:`./etsi_containerized_vnf_usage_guide`. This procedure uses an example using the sample VNF package. How to Create VNF Package for Healing ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Using `tacker/tests/etc/samples/etsi/nfv/test_cnf_heal`_, describe how to create VNF package for healing. .. code-block:: console $ cd tacker/tests/etc/samples/etsi/nfv/test_cnf_heal Download official definition files from ETSI NFV. ETSI GS NFV-SOL 001 [i.4] specifies the structure and format of the VNFD based on TOSCA specifications. .. code-block:: console $ cd Definitions $ wget https://forge.etsi.org/rep/nfv/SOL001/raw/v2.6.1/etsi_nfv_sol001_common_types.yaml $ wget https://forge.etsi.org/rep/nfv/SOL001/raw/v2.6.1/etsi_nfv_sol001_vnfd_types.yaml CSAR Package should be compressed into a ZIP file for uploading. Following commands are an example of compressing a VNF Package: .. code-block:: console $ cd - $ zip deployment.zip -r Definitions/ Files/ TOSCA-Metadata/ $ ls Definitions deployment.zip Files TOSCA-Metadata After creating a vnf package with :command:`openstack vnf package create`, some information including ID, Links, Onboarding State, Operational State, and Usage State will be returned. When the Onboarding State is CREATED, the Operational State is DISABLED, and the Usage State is NOT_IN_USE, indicate the creation is successful. .. code-block:: console $ openstack vnf package create +-------------------+-------------------------------------------------------------------------------------------------+ | Field | Value | +-------------------+-------------------------------------------------------------------------------------------------+ | ID | 08d00a5c-e8aa-4219-9412-411458eaa7d2 | | Links | { | | | "self": { | | | "href": "/vnfpkgm/v1/vnf_packages/08d00a5c-e8aa-4219-9412-411458eaa7d2" | | | }, | | | "packageContent": { | | | "href": "/vnfpkgm/v1/vnf_packages/08d00a5c-e8aa-4219-9412-411458eaa7d2/package_content" | | | } | | | } | | Onboarding State | CREATED | | Operational State | DISABLED | | Usage State | NOT_IN_USE | | User Defined Data | {} | +-------------------+-------------------------------------------------------------------------------------------------+ Upload the CSAR zip file to the VNF Package by running the following command :command:`openstack vnf package upload --path `. Here is an example of uploading VNF package: .. code-block:: console $ openstack vnf package upload --path deployment.zip 08d00a5c-e8aa-4219-9412-411458eaa7d2 Upload request for VNF package 08d00a5c-e8aa-4219-9412-411458eaa7d2 has been accepted. Create VNF instance by running :command:`openstack vnflcm create `. Here is an example of creating VNF : .. code-block:: console $ openstack vnflcm create b1bb0ce7-ebca-4fa7-95ed-4840d70a1177 +--------------------------+---------------------------------------------------------------------------------------------+ | Field | Value | +--------------------------+---------------------------------------------------------------------------------------------+ | ID | 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 | | Instantiation State | NOT_INSTANTIATED | | Links | { | | | "self": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6" | | | }, | | | "instantiate": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6/instantiate" | | | } | | | } | | VNF Instance Description | None | | VNF Instance Name | None | | VNF Product Name | Sample VNF | | VNF Provider | Company | | VNF Software Version | 1.0 | | VNFD ID | b1bb0ce7-ebca-4fa7-95ed-4840d70a1177 | | VNFD Version | 1.0 | +--------------------------+---------------------------------------------------------------------------------------------+ After the command is executed, instantiate VNF. Instantiate VNF by running the following command :command:`openstack vnflcm instantiate `. The following example shows a json file that deploys the Kubernetes resources described in ``deployment_heal_simple.yaml``. Please note that ``additionalParams`` includes path of Kubernetes resource definition file and that ``lcm-kubernetes-def-files`` should be a list. .. code-block:: console $ cat ./instance_kubernetes.json { "flavourId": "simple", "additionalParams": { "lcm-kubernetes-def-files": [ "Files/kubernetes/deployment_heal_simple.yaml" ] }, "vimConnectionInfo": [ { "id": "8a3adb69-0784-43c7-833e-aab0b6ab4470", "vimId": "8d8373fe-6977-49ff-83ac-7756572ed186", "vimType": "kubernetes" } ] } $ openstack vnflcm instantiate 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 instance_kubernetes.json Instantiate request for VNF Instance 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 has been accepted. CNF Healing Procedure --------------------- As mentioned in Prerequisites and Healing target VNF instance, the VNF must be instantiated before healing. Details of CLI commands are described in :doc:`../cli/cli-etsi-vnflcm`. There are two main methods for CNF healing. * Healing of the entire VNF Heal entire VNF instance by termination and instantiation of the VNF. * Healing specified with VNFC instances Heal Pod (mapped as VNFC) that is singleton or created using controller resources of Kubernetes such as Deployment, DaemonSet, StatefulSet and ReplicaSet. .. note:: A VNFC is a 'VNF Component', and one VNFC basically corresponds to one VDU in the VNF. For more information on VNFC, see `NFV-SOL002 v2.6.1`_. .. _labelCapHealingtargetVNFinstance: Healing Target VNF Instance ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Assuming that the following VNF instance exists. VNF Instance is made by using `tacker/tests/etc/samples/etsi/nfv/test_cnf_heal`_. This instance will be healed. .. code-block:: console $ openstack vnflcm show VNF_INSTANCE_ID Result: .. code-block:: console +--------------------------+-------------------------------------------------------------------------------------------+ | Field | Value | +--------------------------+-------------------------------------------------------------------------------------------+ | ID | 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 | | Instantiated Vnf Info | { | | | "flavourId": "simple", | | | "vnfState": "STARTED", | | | "scaleStatus": [ | | | { | | | "aspectId": "vdu1_aspect", | | | "scaleLevel": 0 | | | } | | | ], | | | "extCpInfo": [], | | | "vnfcResourceInfo": [ | | | { | | | "id": "686b356f-8096-4e24-99e5-3c81d36341be", | | | "vduId": "VDU1", | | | "computeResource": { | | | "vimConnectionId": null, | | | "resourceId": "vdu1-heal-simple-75b5566444-wgc7m", | | | "vimLevelResourceType": "Deployment" | | | }, | | | "storageResourceIds": [] | | | }, | | | { | | | "id": "73cb41e7-31ae-494b-b4d0-66b8168c257e", | | | "vduId": "VDU1", | | | "computeResource": { | | | "vimConnectionId": null, | | | "resourceId": "vdu1-heal-simple-75b5566444-wwzcm", | | | "vimLevelResourceType": "Deployment" | | | }, | | | "storageResourceIds": [] | | | } | | | ], | | | "additionalParams": {} | | | } | | Instantiation State | INSTANTIATED | | Links | { | | | "self": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6" | | | }, | | | "terminate": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6/terminate" | | | }, | | | "heal": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6/heal" | | | } | | | } | | VIM Connection Info | [ | | | { | | | "id": "8a3adb69-0784-43c7-833e-aab0b6ab4470", | | | "vimId": "8d8373fe-6977-49ff-83ac-7756572ed186", | | | "vimType": "kubernetes", | | | "interfaceInfo": {}, | | | "accessInfo": {} | | | } | | | ] | | VNF Instance Description | None | | VNF Instance Name | None | | VNF Product Name | Sample VNF | | VNF Provider | Company | | VNF Software Version | 1.0 | | VNFD ID | b1bb0ce7-ebca-4fa7-95ed-4840d70a1177 | | VNFD Version | 1.0 | +--------------------------+-------------------------------------------------------------------------------------------+ How to Heal of the Entire VNF ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Execute Heal of the entire CNF with CLI command and check the name and age of pod information before and after healing. This is to confirm that the name has changed and age has been new after heal. Pod information before heal: .. code-block:: console $ kubectl get pod NAME READY STATUS RESTARTS AGE vdu1-heal-simple-75b5566444-wgc7m 1/1 Running 0 20m vdu1-heal-simple-75b5566444-wwzcm 1/1 Running 0 20m Heal entire VNF can be executed by the following CLI command. .. code-block:: console $ openstack vnflcm heal VNF_INSTANCE_ID Result: .. code-block:: console Heal request for VNF Instance 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 has been accepted. Pod information after heal: .. code-block:: console $ kubectl get pod NAME READY STATUS RESTARTS AGE vdu1-heal-simple-75b5566444-ks785 1/1 Running 0 60s vdu1-heal-simple-75b5566444-p5mjv 1/1 Running 0 60s All ``vnfcResourcecInfo`` in ``Instnatiated Vnf Info`` will be updated from the VNF Instance displayed in :ref:`labelCapHealingtargetVNFinstance`. .. code-block:: console $ openstack vnflcm show VNF_INSTANCE_ID Result: .. code-block:: console +--------------------------+-------------------------------------------------------------------------------------------+ | Field | Value | +--------------------------+-------------------------------------------------------------------------------------------+ | ID | 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 | | Instantiated Vnf Info | { | | | "flavourId": "simple", | | | "vnfState": "STARTED", | | | "scaleStatus": [ | | | { | | | "aspectId": "vdu1_aspect", | | | "scaleLevel": 0 | | | } | | | ], | | | "extCpInfo": [], | | | "vnfcResourceInfo": [ | | | { | | | "id": "a77b9a8e-a672-492d-9459-81c7b6483947", | | | "vduId": "VDU1", | | | "computeResource": { | | | "vimConnectionId": null, | | | "resourceId": "vdu1-heal-simple-75b5566444-j45qb", | | | "vimLevelResourceType": "Deployment" | | | }, | | | "storageResourceIds": [] | | | }, | | | { | | | "id": "9463d02b-faba-41cb-8131-e90eaa319c83", | | | "vduId": "VDU1", | | | "computeResource": { | | | "vimConnectionId": null, | | | "resourceId": "vdu1-heal-simple-75b5566444-p5mjv", | | | "vimLevelResourceType": "Deployment" | | | }, | | | "storageResourceIds": [] | | | } | | | ], | | | "additionalParams": {} | | | } | | Instantiation State | INSTANTIATED | | Links | { | | | "self": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6" | | | }, | | | "terminate": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6/terminate" | | | }, | | | "heal": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6/heal" | | | } | | | } | | VIM Connection Info | [ | | | { | | | "id": "8a3adb69-0784-43c7-833e-aab0b6ab4470", | | | "vimId": "8d8373fe-6977-49ff-83ac-7756572ed186", | | | "vimType": "kubernetes", | | | "interfaceInfo": {}, | | | "accessInfo": {} | | | } | | | ] | | VNF Instance Description | None | | VNF Instance Name | None | | VNF Product Name | Sample VNF | | VNF Provider | Company | | VNF Software Version | 1.0 | | VNFD ID | b1bb0ce7-ebca-4fa7-95ed-4840d70a1177 | | VNFD Version | 1.0 | +--------------------------+-------------------------------------------------------------------------------------------+ How to Heal Specified with VNFC Instances ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Execute Heal of the partial CNF CLI command and check the name and age of pod information before and after healing. This is to confirm that the name has changed and age has been new after heal. Pod information before heal: .. code-block:: console $ kubectl get pod NAME READY STATUS RESTARTS AGE vdu1-heal-simple-75b5566444-wgc7m 1/1 Running 0 20m vdu1-heal-simple-75b5566444-wwzcm 1/1 Running 0 20m Heal specified with VNFC instances can be executed by running :command:`openstack vnflcm heal VNF_INSTANCE_ID --vnfc-instance VNFC_INSTANCE_ID`. In the example of this procedure, specify the ID ``686b356f-8096-4e24-99e5-3c81d36341be`` of the first ``vnfcResourceInfo`` as ``VNFC_INATANCE_ID``. .. code-block:: console $ openstack vnflcm heal 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 --vnfc-instance 686b356f-8096-4e24-99e5-3c81d36341be Result: .. code-block:: console Heal request for VNF Instance 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 has been accepted. Pod information after heal: .. code-block:: console $ kubectl get pod NAME READY STATUS RESTARTS AGE vdu1-heal-simple-75b5566444-ks785 1/1 Running 0 24s vdu1-heal-simple-75b5566444-wwzcm 1/1 Running 0 20m Only the ``resourceId`` of target ``vnfcResourcecInfo`` in ``Instnatiated Vnf Info`` will be updated from the VNF Instance displayed in :ref:`labelCapHealingtargetVNFinstance`. .. code-block:: console $ openstack vnflcm show VNF_INSTANCE_ID Result: .. code-block:: console +--------------------------+-------------------------------------------------------------------------------------------+ | Field | Value | +--------------------------+-------------------------------------------------------------------------------------------+ | ID | 92cf0ccb-e575-46e2-9c0d-30c67e75aaf6 | | Instantiated Vnf Info | { | | | "flavourId": "simple", | | | "vnfState": "STARTED", | | | "scaleStatus": [ | | | { | | | "aspectId": "vdu1_aspect", | | | "scaleLevel": 0 | | | } | | | ], | | | "extCpInfo": [], | | | "vnfcResourceInfo": [ | | | { | | | "id": "686b356f-8096-4e24-99e5-3c81d36341be", | | | "vduId": "VDU1", | | | "computeResource": { | | | "vimConnectionId": null, | | | "resourceId": "vdu1-heal-simple-75b5566444-ks785", | | | "vimLevelResourceType": "Deployment" | | | }, | | | "storageResourceIds": [] | | | }, | | | { | | | "id": "73cb41e7-31ae-494b-b4d0-66b8168c257e", | | | "vduId": "VDU1", | | | "computeResource": { | | | "vimConnectionId": null, | | | "resourceId": "vdu1-heal-simple-75b5566444-wwzcm", | | | "vimLevelResourceType": "Deployment" | | | }, | | | "storageResourceIds": [] | | | } | | | ], | | | "additionalParams": {} | | | } | | Instantiation State | INSTANTIATED | | Links | { | | | "self": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6" | | | }, | | | "terminate": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6/terminate" | | | }, | | | "heal": { | | | "href": "/vnflcm/v1/vnf_instances/92cf0ccb-e575-46e2-9c0d-30c67e75aaf6/heal" | | | } | | | } | | VIM Connection Info | [ | | | { | | | "id": "8a3adb69-0784-43c7-833e-aab0b6ab4470", | | | "vimId": "8d8373fe-6977-49ff-83ac-7756572ed186", | | | "vimType": "kubernetes", | | | "interfaceInfo": {}, | | | "accessInfo": {} | | | } | | | ] | | VNF Instance Description | None | | VNF Instance Name | None | | VNF Product Name | Sample VNF | | VNF Provider | Company | | VNF Software Version | 1.0 | | VNFD ID | b1bb0ce7-ebca-4fa7-95ed-4840d70a1177 | | VNFD Version | 1.0 | +--------------------------+-------------------------------------------------------------------------------------------+ .. _NFV-SOL002 v2.6.1 : https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/002/02.06.01_60/gs_nfv-sol002v020601p.pdf .. _tacker/tests/etc/samples/etsi/nfv/test_cnf_heal : https://opendev.org/openstack/tacker/src/branch/master/tacker/tests/etc/samples/etsi/nfv/test_cnf_heal