.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
.. Copyright 2018 ONAP

.. _docs_vfw_edgex_multicloud_k8s:

vFW/Edgex with Multicloud Kubernetes Plugin: Setting Up and Configuration
-------------------------------------------------------------------------

Description
-----------

This use case covers the deployment of vFW and Edgex HELM Charts in a Kubernetes
based cloud region via the multicloud-k8s plugin.
The multicloud-k8s plugin provides APIs to upload self-contained HELM Charts
that can be customized via the profile API and later installed in a particular
cloud region.

When the installation is complete (all the pods are either in running or
completed state)

vFW Helm Chart link:
~~~~~~~~~~~~~~~~~~~~

https://github.com/onap/multicloud-k8s/tree/master/kud/demo/firewall

EdgeXFoundry Helm Chart link:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

https://github.com/onap/multicloud-k8s/tree/master/kud/tests/vnfs/edgex/helm/edgex


Create CSAR with Helm chart as an artifact
------------------------------------------

The CSAR is a heat template package with Helm chart in it. The basic package
consists of:

* an **environment file**
* a **base_dummy.yaml file** (example)
* a **MANIFEST.json**
* a **tar.gz** file (of Helm chart)

These files must be zipped before onboarding.
One thing to pay much attention to is the naming convention which MUST
be followed while making the tgz.

**NOTE**: The Naming convention is for the helm chart tgz file.

**Naming convention follows the format:**

<free format string>\_\ ***cloudtech***\ \_<technology>\_<subtype>.extension

1. *Cloudtech:* is a fixed pattern and should not be changed if not
   necessary
2. *Technology:* k8s, azure, aws
3. *Subtype*: charts, day0, config template
4. *Extension*: zip, tgz, csar

**NOTE**: The .tgz file must be a tgz created from the top level helm chart
folder. I.e. a folder that contains a Chart.yaml file in it.
For vFW use case the content of tgz file must look as follows:

::

    $ helm package firewall

    $ tar -tf firewall-0.1.0.tgz

    firewall/.helmignore
    firewall/Chart.yaml
    firewall/templates/onap-private-net.yaml
    firewall/templates/_helpers.tpl
    firewall/templates/protected-private-net.yaml
    firewall/templates/deployment.yaml
    firewall/templates/unprotected-private-net.yaml
    firewall/values.yaml
    firewall/charts/sink/.helmignore
    firewall/charts/sink/Chart.yaml
    firewall/charts/sink/templates/configmap.yaml
    firewall/charts/sink/templates/_helpers.tpl
    firewall/charts/sink/templates/service.yaml
    firewall/charts/sink/templates/deployment.yaml
    firewall/charts/sink/values.yaml
    firewall/charts/packetgen/.helmignore
    firewall/charts/packetgen/Chart.yaml
    firewall/charts/packetgen/templates/_helpers.tpl
    firewall/charts/packetgen/templates/deployment.yaml
    firewall/charts/packetgen/values.yaml


An example of the contents inside a heat template package can be found hereafter.

::

     $ vfw-k8s/package$ ls
      MANIFEST.json base_dummy.env base_dummy.yaml
      vfw_cloudtech_k8s_charts.tgz vfw_k8s_demo.zip


MANIFEST.json
~~~~~~~~~~~~~

Key thing is note the addition of cloud artifact

::

  type: "CLOUD_TECHNOLOGY_SPECIFIC_ARTIFACTS"

  {
    "name": "",
    "description": "",
    "data": [
        {
            "file": "base_dummy.yaml",
            "type": "HEAT",
            "isBase": "true",
            "data": [
                {
                    "file": "base_dummy.env",
                    "type": "HEAT_ENV"
                }
            ]
        },
        {
            "file": "vfw_cloudtech_k8s_charts.tgz",
            "type": "CLOUD_TECHNOLOGY_SPECIFIC_ARTIFACTS"
        }
	]
  }

base\_dummy.yaml
~~~~~~~~~~~~~~~~

It is an example of the minimal HEAT template.

::

 ##==================LICENSE_START========================================
  ##
  ## Copyright (C) 2019 Intel Corporation
  ## SPDX-License-Identifier: Apache-2.0
  ##
  ##==================LICENSE_END===========================================

  heat_template_version: 2016-10-14
  description: Heat template to deploy dummy VNF

  parameters:
    dummy_name_0:
      type: string
      label: name of vm
      description: Dummy name

    vnf_id:
      type: string
	    label: id of vnommand to read (GET) Definition
      description: Provided by ONAP

    vnf_name:
      type: string
      label: name of vnf
      description: Provided by ONAP

    vf_module_id:
      type: string
      label: vnf module id
      description: Provided by ONAP

    dummy_image_name:
	  type: string
      label: Image name or ID
      description: Dummy image name

    dummy_flavor_name:
      type: string
      label: flavor
      description: Dummy flavor

  resources:
    dummy_0:
      type: OS::Nova::Server
      properties:
        name: { get_param: dummy_name_0 }
        image: { get_param: dummy_image_name }
        flavor: { get_param: dummy_flavor_name } metadata: { vnf_name: { get_param: vnf_name }, vnf_id: { get_param: vnf_id }, vf_module_id: { get_param: vf_module_id }}


**base\_dummy.env**

::

  parameters:
    vnf_id: PROVIDED_BY_ONAP
    vnf_name: PROVIDED_BY_ONAP
    vf_module_id: PROVIDED_BY_ONAP
    dummy_name_0: dummy_1_0
    dummy_image_name: dummy
    dummy_flavor_name: dummy.default

Onboard the CSAR
----------------

For onboarding instructions please refer to steps 4-9 from the document
`here <https://wiki.onap.org/display/DW/vFWCL+instantiation%2C+testing%2C+and+debuging>`__.

Steps for installing KUD Cloud
------------------------------

Follow the link to install KUD Kubernetes Deployment. KUD contains all the
packages required for running vfw use case.

Kubernetes Baremetal deployment instructions can be found here_

.. _here: https://wiki.onap.org/display/DW/Kubernetes+Baremetal+deployment+setup+instructions/

REGISTER KUD CLOUD REGION with K8s-Plugin
-----------------------------------------

You must declare the KUD as a new cloud region in ONAP thanks to ONAP multicloud
API.

POST connectivity info
~~~~~~~~~~~~~~~~~~~~~~

Create a the post.json file as follows:

::

  {
    "cloud-region" : "<name>",   // Must be unique
    "cloud-owner" :  "<owner>",
    "other-connectivity-list" : {
           }

Then send the POST HTTP request as described below:

::

 curl -i -F "metadata=<post.json;type=application/json" -F file=@
  /home/ad_kkkamine/.kube/config -X POST http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/connectivity-info

GET Connectivity Info
~~~~~~~~~~~~~~~~~~~~~~

::

  curl -i -X GET http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/connectivity-info/{name}


DELETE Connectivity Info
~~~~~~~~~~~~~~~~~~~~~~~~

::

  curl -i -X GET http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/connectivity-info/{name}


UPDATE/PUT Connectivity Info
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

::

  curl -i -X GET http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/connectivity-info/{name}

Register KUD Cloud region with AAI
----------------------------------

A tenant must be added to the k8s cloud region.
The 'easy' way is to have the ESR information (in step 1 of cloud
registration) pointing to a real OpenStack tenant (e.g. the OOF tenant in
the lab where we tested).

This will cause multicloud to add the tenant to the k8s cloud region and
then, similarly to #10 in the documentation
`here <https://onap.readthedocs.io/en/casablanca/submodules/integration.git/docs/docs_vfwHPA.html#docs-vfw-hpa>`__,
the service-subscription can be added to that object.

**NOTE:** use same name cloud-region and cloud-owner name

An example is shown below for K8s cloud but following the steps 1,2,3
from
`here <https://docs.onap.org/projects/onap-multicloud-framework/en/latest/multicloud-plugin-windriver/UserGuide-MultiCloud-WindRiver-TitaniumCloud.html?highlight=multicloud>`__.
The sample input below is for k8s cloud type.

**Step 1**: Cloud Registration/ Create a cloud region to represent the instance

Note: the highlighted part of the body refers to an existing OpenStack
tenant (OOF in this case). It is provided as an illustration and must be adapted
according to your configuration.

::

 PUT https://{{AAI1_PUB_IP}}:{{AAI1_PUB_PORT}}/aai/v13/cloud-infrastructure/cloud-regions/cloud-region/k8scloudowner4/k8sregionfour
  {
	"cloud-owner": "k8scloudowner4",
	"cloud-region-id": "k8sregionfour",
	"cloud-type": "k8s",
	"owner-defined-type": "t1",
	"cloud-region-version": "1.0",
	"complex-name": "clli1",
	"cloud-zone": "CloudZone",
	"sriov-automation": false,
    "cloud-extra-info":"{\"openstack-region-id\":\"k8sregionthree\"}",
	"esr-system-info-list": {
               "esr-system-info": [
                              {
                                             	"esr-system-info-id": "55f97d59-6cc3-49df-8e69-926565f00066",
                                             	"service-url": "http://10.12.25.2:5000/v3",
                                             	"user-name": "demo",
                                             	"password": "onapdemo",
                                             	"system-type": "VIM",
                                             	"ssl-insecure": true,
                                             	"cloud-domain": "Default",
                                             	"default-tenant": "OOF",
                                             	"tenant-id": "6bbd2981b210461dbc8fe846df1a7808",
                                             	"system-status": "active"
                                             }
                              ]
	}
  }

**Step 2:**  Add a complex to the cloud

Adding an already existing complex is enough. You do not need to create new ones.

::

 PUT https://{{AAI1_PUB_IP}}:{{AAI1_PUB_PORT}}/aai/v13/cloud-infrastructure/cloud-regions/cloud-region/k8scloudowner4/k8sregionfour/relationship-list/relationship
  {
  "related-to": "complex",
  "related-link": "/aai/v13/cloud-infrastructure/complexes/complex/clli1",
  "relationship-data": [
    {
       "relationship-key": "complex.physical-location-id",
       "relationship-value": "clli1"
    }
  ]
  }

**Step 3:** Trigger the Multicloud plugin registration process

::

  POST http://{{MSB_IP}}:{{MSB_PORT}}/api/multicloud-titaniumcloud/v1/k8scloudowner4/k8sregionfour/registry


This step allws the registration of the K8S cloud with Multicloud. It also
reaches out and adds tenant information to the cloud (see example below, you
will see all kinds of flavor, image information that are associated with the OOF
tenant).

If you did not follow the procedure described above then you will have to connect
on AAI point and manually add a tenant to the cloud region.

Once the tenant declared, you can add the service-subscription to it:

**Step 4:** Create a Service Type

::

 PUT https://{{AAI1_PUB_IP}}:{{AAI1_PUB_PORT}}/aai/v13/service-design-and-creation/services/service/vfw-k8s
  {
              "service-description": "vfw-k8s",
              "service-id": "vfw-k8s"
  }

Add subscription service info to the service type of the customer.

::

 PUT https://{{AAI1_PUB_IP}}:{{AAI1_PUB_PORT}}/aai/v16/business/customers/customer/Demonstration/service-subscriptions/service-subscription/vfw-k8s
  {
           "service-type": "vfw-k8s"
  }

Add Service-Subscription to the tenant. The parameter resource-version is a
timestamp.

::

 PUT https://{{AAI1_PUB_IP}}:{{AAI1_PUB_PORT}}/aai/v16/cloud-infrastructure/cloud-regions/cloud-region/k8scloudowner4/k8sregionfour/tenants/tenant/6bbd2981b210461dbc8fe846df1a7808?resource-version=1559345527327
  {
  "tenant-id": "6bbd2981b210461dbc8fe846df1a7808",
  "tenant-name": "OOF",
  "resource-version": "1559345527327",
  "relationship-list": {
       "relationship": [
           {
               "related-to": "service-subscription",
               "relationship-label": "org.onap.relationships.inventory.Uses",
               "related-link": "/aai/v13/business/customers/customer/Demonstration/service-subscriptions/service-subscription/vfw-k8s",
               "relationship-data": [
                   {
                       "relationship-key": "customer.global-customer-id",
                       "relationship-value": "Demonstration"
                   },
                   {
                       "relationship-key": "service-subscription.service-type",
                       "relationship-value": "vfw-k8s"
                   }
               ]
           }
    ]
  }
  }

Distribute the CSAR
-------------------

Once the cloud region is properly declared, it is possible to onboard the service
in the SDC and triggers a distribution from the SDC to the main ONAP components.
SO and other services are notified. A sdc listener is also getting the
distribution information in the multicloud sidecar.
When distribution happens it takes tar.gz file and uploads it to k8s plugin.

Create Profile Manually
-----------------------

K8s-plugin artifacts start in the form of Definitions. These are nothing
but Helm Charts wrapped with some metadata about the chart itself. Once
the Definitions are created, some profiles can be created. Finally it is
possible to customize the definition and instantiate it in the targeted
Kubernetes.

**NOTE:** Refer this link_ for complete API lists and documentation:

.. _link : https://wiki.onap.org/display/DW/MultiCloud+K8s-Plugin-service+API

The profile consists in:

* the **manifest.yaml**. It contains the details for the profile
* a **HELM** values override yaml file: It can have any name as long as it matches
  the corresponding entry in the **manifest.yaml**
* Additional files organized in a folder structure: all these files should have
  a corresponding entry in **manifest.yaml** file

Create a Profile Artifact
~~~~~~~~~~~~~~~~~~~~~~~~~

::

 > cd multicloud-k8s/kud/tests/vnfs/testrb/helm/profile
  > find .
  manifest.yaml
  override_values.yaml
  testfol
  testfol/subdir
  testfol/subdir/deployment.yaml

  # Create profile tar.gz
  > cd profile
  > tar -cf profile.tar *
  > gzip profile.tar
  > mv profile.tar.gz ../

The manifest file contains the following parameters:

::

 ---
 version: v1
 type:
 values: "values_override.yaml"
 configresource:
   - filepath: testfol/subdir/deployment.yaml
     chartpath: vault-consul-dev/templates/deployment.yaml

**Note:** values: "values\_override.yaml" can **be** empty **file** **if**
you are creating **a** dummy **profile**

**Note:** A dummy profile does not need any customization. The following is
optional in the manifest file.

::

 configresource:
   - filepath: testfol/subdir/deployment.yaml
     chartpath: vault-consul-dev/templates/deployment.yaml

The name of the Definition is retrived from SDC service distribution stage.

Retrieve the definition name
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Execute the following command on the ONAP K8s Rancher host to read the definition
name and its version:

::

 kubectl logs -n onap `kubectl get pods -o go-template --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}' | grep multicloud-k8s | head -1` -c multicloud-k8s

From the output read the name of the definition which is "rb-name" and
"rb-version" respectively

::

 127.0.0.1 - - [15/Jul/2019:07:56:21 +0000] "POST /v1/rb/definition/test-rbdef/1/content HTTP/1.1"

Get definition
^^^^^^^^^^^^^^

With this information, it is possible to upload the profile with the following JSON data

::

 {
   "rb-name": "test-rbdef",
   "rb-version": "1",
   "profile-name": "p1",
   "release-name": "r1", //If release-name is not provided, profile-name will be used
   "namespace": "testnamespace1",
   "kubernetes-version": "1.13.5"
 }


Create Profile
^^^^^^^^^^^^^^
::

 curl -i -d @create_rbprofile.json -X POST http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/rb/definition/test-rbdef/1/profile


UPLOAD artifact for Profile
^^^^^^^^^^^^^^^^^^^^^^^^^^^

::

 curl -i --data-binary @profile.tar.gz -X POST http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/rb/definition/test-rbdef/1/profile/p1/content


GET Profiles
^^^^^^^^^^^^

::

 curl -i http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/rb/definition/test-rbdef/1/profile
  # Get one Profile
  curl -i http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/rb/definition/test-rbdef/1/profile/p1


DELETE Profile
^^^^^^^^^^^^^^

::

 curl -i -X DELETE http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/rb/definition/test-rbdef/1/profile/p1


Instantiation
-------------

Instantiation is done by SO. SO then talks to Multi Cloud-broker via MSB
and that in turn looks up the cloud region in AAI to find the endpoint.
If k8sregion one is properly registered in AAI (SO check),
then the broker will know that it needs to talk to k8s-plugin based on
the type of the registration.

Instantiate the created Profile via the following REST API
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

::

 Using the following JSON:
  {
   "cloud-region": "kud",
   "profile-name": "p1",
   "rb-name":"test-rbdef",
   "rb-version":"1",
   "labels": {
   }
  }

**NOTE**: Make sure that the namespace is already created before instantiation.

Instantiate the profile with the ID provided above

Instantiate a Profile
~~~~~~~~~~~~~~~~~~~~~

::

 curl -d @create_rbinstance.json http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/instance


The command shall return the following JSON

::

 {
 "id": "ZKMTSaxv",
 "rb-name": "mongo",
 "rb-version": "1",
 "profile-name": "profile1",
 "cloud-region": "kud",
 "namespace": "testns",
 "resources": [
   {
     "GVK": {
       "Group": "",
       "Version": "v1",
       "Kind": "Service"
     },
     "Name": "mongo"
   },
   {
     "GVK": {
       "Group": "",
       "Version": "v1",
       "Kind": "Service"
     },
     "Name": "mongo-read"
   },
   {
     "GVK": {
       "Group": "apps",
       "Version": "v1beta1",
       "Kind": "StatefulSet"
     },
     "Name": "profile1-mongo"
   }
 ]
 }

Delete Instantiated Kubernetes resources
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The **id** field from the returned JSON can be used to **DELETE** the
resources created in the previous step. This executes a Delete operation
using the Kubernetes API.

::

 curl -X DELETE http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/instance/ZKMTSaxv


GET Instantiated Kubernetes resources
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The **id** field from the returned JSON can be used to **GET** the
resources created in the previous step. This executes a get operation
using the Kubernetes API.

::

 curl -X GET http://MSB_NODE_IP:30280/api/multicloud-k8s/v1/v1/instance/ZKMTSaxv


`*\ https://github.com/onap/oom/blob/master/kubernetes/multicloud/resources/config/provider-plugin.json <https://github.com/onap/oom/blob/master/kubernetes/multicloud/resources/config/provider-plugin.json>`__

Create User parameters
~~~~~~~~~~~~~~~~~~~~~~

We need to create parameters that ultimately get translated as:

::

 "user_directives": {
 "attributes": [
 {
 "attribute_name": "definition-name",
 "attribute_value": "edgex"
 },
 {
 "attribute_name": "definition-version",
 "attribute_value": "v1"
 },
 {
 "attribute_name": "profile-name",
 "attribute_value": "profile1"
 }
 ]
 }