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ONAP deployment in kubernetes is modeled in the oom project as an one to one set of service to pod sets (One pod per docker container).

You can do the under cloud set up by following Quickstart Installation in ONAP on Kubernetests or the following steps described in the page:


Install Rancher

Following the steps below to install and configure Rancher:

#PurposeCommand and Example
1

Add host name to /etc/hosts file 1

sudo vi /etc/hosts

 Example result of /etc/hosts file

ubuntu@sdnc-k8s:~$ more /etc/hosts

127.0.0.1 sdnc-k8s localhost

...

10.147.132.10 sdnc-k8s

10.147.90.6 sdnc-k8s-2

2 

Clone OOM project from ONAP gerrit

git clone http://gerrit.onap.org/r/oom

3 

Install docker 1.12 2


curl https://releases.rancher.com/install-docker/1.12.sh | sh

 Example of docker installation

+ sudo -E sh -c docker version

Client:

 Version:      1.12.6

 API version:  1.24

 Go version:   go1.6.4

 Git commit:   78d1802

 Built:        Tue Jan 10 20:38:45 2017

 OS/Arch:      linux/amd64


Server:

 Version:      1.12.6

 API version:  1.24

 Go version:   go1.6.4

 Git commit:   78d1802

 Built:        Tue Jan 10 20:38:45 2017

 OS/Arch:      linux/amd64


If you would like to use Docker as a non-root user, you should now consider

adding your user to the "docker" group with something like:


  sudo usermod -aG docker ubuntu


Remember that you will have to log out and back in for this to take effect!

4

Install/start rancher server 3

Only on master node (if you are installing more than one Kubernetes nodes), Use port 8880 instead of 8080.

docker run -d --restart=unless-stopped -p 8880:8080 rancher/server

 Example of rancher start in docker

Unable to find image 'rancher/server:latest' locally

latest: Pulling from rancher/server

6599cadaf950: Pull complete

23eda618d451: Pull complete

f0be3084efe9: Pull complete

52de432f084b: Pull complete

a3ed95caeb02: Pull complete

e75cd91a1dc5: Pull complete

997f1b48f59f: Pull complete

313c28fb4e37: Pull complete

2a0730d1275c: Pull complete

8848fbebd2c8: Pull complete

906504ea9ea6: Pull complete

9329940f8e65: Pull complete

e849debd7945: Pull complete

4883bd135dd2: Pull complete

605c6a0fe940: Pull complete

274bc004c933: Pull complete

a6cb25e8d1a2: Pull complete

3ded9d4c8c2b: Pull complete

a571d2f40012: Pull complete

Digest: sha256:096026aa3eed411077690c904cd5dd3cce66eb39312c78a84209eab23387c36d

Status: Downloaded newer image for rancher/server:latest

4b3020cfccc2db47905e89e66cd8533fea82d60b886b2f4509e5f1c56764563a

 Example of validate rancher server is up in docker

ubuntu@sdnc-k8s:~$ docker ps

CONTAINER ID    IMAGE               COMMAND                  CREATED             STATUS              PORTS                               NAMES

4b3020cfccc2        rancher/server      "/usr/bin/entry /usr/"   12 minutes ago      Up 12 minutes       3306/tcp, 0.0.0.0:8880->8080/tcp   backstabbing_wright

Notes:

  1. Optional to add all cluster nodes to /etc/hosts file on each node
  2. Check out compartible versions among rancher, kubernetes and docker
  3. There may be issues with the DNS pod in Rancher after a reboot or when running clustered hosts as described in ONAP bug OOM-236 (Rancher DNS pod non-functional after system reboot - only in cluster mode). A clean system is OK.


Configure Rancher Client

You can access Rancher UI through http:<master host IP>:8880, it takes you to the apps/stacks page.

For example,

you can access rancher from http://10.147.132.10:8880/ , the page will be opened at http://10.147.132.10:8880/env/1a5/apps/stacks.


From here, following the steps below to configure the rancher:

#PurposeScript shots illustrated steps
1

Create Rancher environment:

  • Launch "Manage enviroments" page

 

  • Set new enviroment Name in the name field, for example, name the enviroment to "sdnc-ha".
  • (optional) add Description of the new environment
  • and select Environment Template with "Kubernetest".
  • and click on Create button

 

  • check the new enviroment has been created and shown as "Active"

 

 (Optional) delete pre-existing Default environment

2

Add host to INFRASTRUCTURE

  • go to Hosts page from INFRASTRUCTURE -> Hosts
  • click on AddHost button

  • For the first time only, the following confirmation page would appear, click Save button to continue.

  • the following Add Host page would appear:

    • skip step 1, 2, 3
    • In step 4, fill in the blank with the server IP
    • In step 5,
      • Click Copy to Clipboard button to copy the command and run it on the server
      •  Example of registering rancher agent on the server

        ubuntu@sdnc-k8s:~$ docker run -e CATTLE_AGENT_IP="10.147.132.10"  --rm --privileged -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/rancher:/var/lib/rancher rancher/agent:v1.2.6http://10.147.132.10:8880/v1/scripts/774E9A523D82DBCBDE13:1483142400000:FPPmrMz8IurKQwVLV2UpfGR10AY

        Unable to find image 'rancher/agent:v1.2.6' locally

        v1.2.6: Pulling from rancher/agent

        b3e1c725a85f: Pull complete

        6a710864a9fc: Pull complete

        d0ac3b234321: Pull complete

        87f567b5cf58: Pull complete

        063e24b217c4: Pull complete

        d0a3f58caef0: Pull complete

        16914729cfd3: Pull complete

        2ce3828c0b9d: Pull complete

        7df47a98fc4b: Pull complete

        Digest: sha256:a68afd351c7417e6d66a77e97144113ceb7a9c3cdd46fb6e1fd5f5a5a33111cd

        Status: Downloaded newer image for rancher/agent:v1.2.6

         

        INFO: Running Agent Registration Process, CATTLE_URL=http://10.147.132.10:8880/v1

        INFO: Attempting to connect to: http://10.147.132.10:8880/v1

        INFO: http://10.147.132.10:8880/v1 is accessible

        INFO: Inspecting host capabilities

        INFO: Boot2Docker: false

        INFO: Host writable: true

        INFO: Token: xxxxxxxx

        INFO: Running registration

        INFO: Printing Environment

        INFO: ENV: CATTLE_ACCESS_KEY=0CB90B4247A136F6E43E

        INFO: ENV: CATTLE_AGENT_IP=10.147.132.10

        INFO: ENV: CATTLE_HOME=/var/lib/cattle

        INFO: ENV: CATTLE_REGISTRATION_ACCESS_KEY=registrationToken

        INFO: ENV: CATTLE_REGISTRATION_SECRET_KEY=xxxxxxx

        INFO: ENV: CATTLE_SECRET_KEY=xxxxxxx

        INFO: ENV: CATTLE_URL=http://10.147.132.10:8880/v1

        INFO: ENV: DETECTED_CATTLE_AGENT_IP=172.17.0.1

        INFO: ENV: RANCHER_AGENT_IMAGE=rancher/agent:v1.2.6

        INFO: Launched Rancher Agent: 4e3b1e4c2b4c33095ef550cbece626277b63783b012efe74ed2713df63cc925c

         Example of validating rancher agent started

        ubuntu@sdnc-k8s:~$ docker ps

        CONTAINER ID        IMAGE                   COMMAND                  CREATED             STATUS              PORTS                               NAMES

        43eff054da6a        rancher/net:v0.11.9    "/rancher-entrypoint."   5 seconds ago       Up 4 seconds                                            r-ipsec-cni-driver-1-4a5c6e16

        4e3b1e4c2b4c        rancher/agent:v1.2.6   "/run.sh run"            27 seconds ago      Up 27 seconds                                           rancher-agent

        4b3020cfccc2         rancher/server          "/usr/bin/entry /usr/"   46 minutes ago      Up 46 minutes       3306/tcp, 0.0.0.0:8880->8080/tcp   backstabbing_wright

    • Click on Close button to close the Add Host page
  • go to Hosts page from INFRASTRUCTURE -> Hosts, and you should see the newly added host
    •  Example of Hosts page with one node

       Example of Hosts page has 2 nodes

3

Confirm add host process completed

The end of adding host operation is indicated by the CLI option shows under KUBERNETES dropdown menu.

 Example of CLI option in KUBERNETES drop down


Install kubectl

kubectl is a command line interface for running commands against Kubernetes clusters.

Follow the steps below to install kubectrl:

#PurposeCommand and Example
1

Download kubectl on the server

curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl

 Example of download kubectl process

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

                                 Dload  Upload   Total   Spent    Left  Speed

100 49.8M  100 49.8M    0     0  15.3M      0  0:00:03  0:00:03 --:--:-- 15.3M

2

Enable kubectl command

chmod +x ./kubectl

sudo mv ./kubectl /usr/local/bin/kubectl

3

Generate Config from Rancher UI

  • from rancher UI, go to Kubernetes CLI page through KUBERNETES -> CLI
  • click on Generate Config button to generate config

  • the following content will be brough up, click on Copy to Clipboard button to copy the generated config and use it in next step


4

Create kube config on the server

mkdir ~/.kube

vi ~/.kube/config

Paste the generated config from rancher UI (from last step) to this file, then save the file.

5

Validate kube config

kubectl cluster-info


Install Helm

Helm is used by OOM for package and configuration management, hence we are installing Helm (use 2.3.0 not current 2.6.0) on the server where we have mounted OOM project. 

Follow the steps below to download and enable helm on the server:

#PurposeCommand and Example

1

Download helm tar file

wget http://storage.googleapis.com/kubernetes-helm/helm-v2.3.0-linux-amd64.tar.gz

 Example of wget helm

--2017-11-08 20:12:30--  http://storage.googleapis.com/kubernetes-helm/helm-v2.3.0-linux-amd64.tar.gz

Resolving storage.googleapis.com (storage.googleapis.com)... 216.58.208.48, 2a00:1450:4001:815::2010

Connecting to storage.googleapis.com (storage.googleapis.com)|216.58.208.48|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 12568314 (12M) [application/x-tar]

Saving to: ‘helm-v2.3.0-linux-amd64.tar.gz’


helm-v2.3.0-linux-amd64.tar.gz                   100%[========================================================================================================>]  11.99M  10.8MB/s    in 1.1s


2017-11-08 20:12:32 (10.8 MB/s) - ‘helm-v2.3.0-linux-amd64.tar.gz’ saved [12568314/12568314]

2

Untar helm tar file

tar -zxvf helm-v2.3.0-linux-amd64.tar.gz

 helm tar file content

linux-amd64/

linux-amd64/helm

linux-amd64/LICENSE

linux-amd64/README.md

3

enable helm command

sudo mv linux-amd64/helm /usr/local/bin/helm

 Tip of viewing helm command menu
 Helm help menu

ubuntu@sdnc-k8s:~$ helm help

The Kubernetes package manager

 

To begin working with Helm, run the 'helm init' command:

 

        $ helm init

 

This will install Tiller to your running Kubernetes cluster.

It will also set up any necessary local configuration.

 

Common actions from this point include:

 

- helm search:    search for charts

- helm fetch:     download a chart to your local directory to view

- helm install:   upload the chart to Kubernetes

- helm list:      list releases of charts

 

Environment:

  $HELM_HOME          set an alternative location for Helm files. By default, these are stored in ~/.helm

  $HELM_HOST          set an alternative Tiller host. The format is host:port

  $HELM_NO_PLUGINS    disable plugins. Set HELM_NO_PLUGINS=1 to disable plugins.

  $TILLER_NAMESPACE   set an alternative Tiller namespace (default "kube-namespace")

  $KUBECONFIG         set an alternative Kubernetes configuration file (default "~/.kube/config")

 

Usage:

  helm [command]

 

Available Commands:

  completion  Generate bash autocompletions script

  create      create a new chart with the given name

  delete      given a release name, delete the release from Kubernetes

  dependency  manage a chart's dependencies

  fetch        download a chart from a repository and (optionally) unpack it in local directory

  get          download a named release

  history       fetch release history

  home         displays the location of HELM_HOME

  init         initialize Helm on both client and server

  inspect      inspect a chart

  install     install a chart archive

  lint         examines a chart for possible issues

  list         list releases

  package      package a chart directory into a chart archive

  plugin      add, list, or remove Helm plugins

  repo        add, list, remove, update, and index chart repositories

  reset        uninstalls Tiller from a cluster

  reset        uninstalls Tiller from a cluster

  rollback    roll back a release to a previous revision

  search      search for a keyword in charts

  serve        start a local http web server

  status      displays the status of the named release

  test        test a release

  test        test a release

  upgrade     upgrade a release

  verify      verify that a chart at the given path has been signed and is valid

  version     print the client/server version information

  version      print the client/server version information

 

Flags:

      --debug                     enable verbose output

      --home string                location of your Helm config. Overrides $HELM_HOME (default "/home/ubuntu/.helm")

      --host string               address of tiller. Overrides $HELM_HOST

      --kube-context string        name of the kubeconfig context to use

      --tiller-namespace string   namespace of tiller (default "kube-system")

 

Use "helm [command] --help" for more information about a command.


Confirm Setup Done

Wait until all hosts in rancher show green, It indicates it's done :)



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