Versions Compared

Old Version 2

changes.mady.by.user Michael O'Brien

Saved on

compared with

New Version Current

changes.mady.by.user Mohammadreza Pasandideh

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Info
titleWorking in progress

Although the exciting instructions on Steps described in this page are working for kubernetes, the cluster configuration part is still working in progress. Will be updated as soon as it becomes available.run by "ubuntu", a non-root user.


This page describes the steps of using rancher (rancher environment) to deploy Kubernetes node and config Kubernetes cluster nodes.


Table of Contents


Deploy The First Kubernetes Node

This section, similar as Quickstart Installation in ONAP on Kubernetes, provides the instruction of setting kubernestes deploying Kubernetes node through Rancher. The steps described on this page include using rancher to configure clustered kubernetes nodes - keep this page, the parent and the linked pages all in sync

Table of Contents

The first Kubernetes node in the Kubernetes cluster is to be deployed on the rancher server VM which also is configured with ranch client running.

Setup Rancher Server

...

Follow the steps below to install and configure Rancher:

Install Docker 1.12 2

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

+ 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!

#PurposeCommand and Example
1

Add host name to /etc/hosts file

Adding all cluster nodes to /etc/hosts file

1

on each node


sudo vi /etc/hosts

Expand
titleExample 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 the OOM project from ONAP gerrit

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

2

Install/Start Rancher server


There may be issues with the DNS pod in Rancher after a reboot or when running clustered hosts as described in ONAP bug:

A clean system is OK.

3 
Expand
titleExample of docker installation
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:v1.6.10

Expand
titleExample of rancher start in docker

$ docker run -d --restart=unless-stopped -p 8880:8080 rancher/server:v1.6.10

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

Expand
titleExample of validate rancher server is up in docker

ubuntu@sdnc-k8s:~$ $ docker ps
CONTAINER ID    IMAGE               COMMAND                  CREATED             STATUS              PORTS                               ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4b3020cfccc2        e3f1c2ce3234 rancher/server      server:v1.6.10 "/usr/bin/entry /usr/"    12 minutes ago      Up 12 minutes       7 seconds ago Up 6 seconds 3306/tcp, 0.0.0.0:8880->8080/tcp   backstabbingtcp pensive_wright

Notes:

...

goldberg
$


Configure Rancher Client

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

...

#PurposeScript shots illustrated steps
1

Create Rancher environment:

  • Launch "Manage enviromentsEnviroments" page
 Image Removed
  • Image Added
  • Click on "Add Enviroment"
  • Image Added
  • Fill in the template with the following, and then click on the Create button
    • Name: "sdnc-ha"
    • (Optional) Add Description of the new environment
    • Environment Template: Kubernetes
  • Click on the Create button
 Image Removed
  • Image Added 
  • Check that the new enviroment has been created and displays as "Active" 
 Image Removed
  • Image Added
  • Expand
    title
(Optional) delete
  • Delete pre-existing Default environment
Image Removed


  • Image Added

Image Removed

  • Image Added


2

Add host to INFRASTRUCTURE

  • Go to the Hosts page via INFRASTRUCTURE -> Hosts
  • Click on the AddHost button

Image RemovedImage Added

  • For the first time only, the following confirmation page will appear (click the Save button to continue):

Image RemovedImage Added

  • The following Add Host page will appear:

Image RemovedImage Added

    • Skip steps 1, 2, and 3 listed in the page
    • In step 4, fill in the blank with the server IP
    • In step 5:

      • Click the Copy to Clipboard button to copy the command and run it on the server

        Expand
        titleExample 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

        Expand
        titleExample of validating rancher agent started

        ubuntu@sdnc-k8s:~$ $ docker ps
        CONTAINER ID        IMAGE                   COMMAND                  CREATED             STATUS              PORTS                               NAMES43eff054da6a        ID IMAGE COMMAND CREATED STATUS PORTS NAMES
        64562118a30c rancher/etcd:v2.3.7-13 "/.r/r /opt/rancher/r" 1 seconds ago Up Less than a second r-kubernetes-etcd-1-b95cd471
        308b3fbf1882 rancher/net:holder "/.r/r /rancher-entry" 12 seconds ago Up 11 seconds r-ipsec-ipsec-1-9198fa8b
        523278d910f4 rancher/dns:v0.15.3 "/rancher-entrypoint." 12 seconds ago Up 11 seconds r-network-services-metadata-dns-1-2730cb6f
        8520cc50c5ff rancher/metadata:v0.9.4 "/rancher-entrypoint." 13 seconds ago Up 12 seconds r-network-services-metadata-1-53bf4aaf
        1f6dcb021f5b rancher/healthcheck:v0.3.3 "/.r/r /rancher-entry" 14 seconds ago Up 13 seconds r-healthcheck-healthcheck-1-3d14df58
        1d7ad141ceec rancher/network-manager:v0.7.8 "/rancher-entrypoint." 14 seconds ago Up 13 seconds r-network-services-network-manager-1-fdd38b68
        c7dfdde262d7 rancher/net:v0.11.9    9 "/rancher-entrypoint."    5 14 seconds ago       Up 4 seconds                                            ago Up 13 seconds r-ipsec-cni-driver-1-4a5c6e16415b67fe
        4e3b1e4c2b4c        64e2f05b0394 rancher/agent:v1.2.6   6 "/run.sh run"             27 20 seconds ago      Up 27 seconds                                           ago Up 19 seconds rancher-agent
        4b3020cfccc2         e3f1c2ce3234 rancher/server          server:v1.6.10 "/usr/bin/entry /usr/"    46 9 minutes ago      ago Up 46 minutes       9 minutes 3306/tcp, 0.0.0.0:8880->8080/tcp   backstabbing_wrighttcp pensive_goldberg
        $

    • Click on the Close button to close the Add Host page
  • Go to the Hosts page from INFRASTRUCTURE -> Hosts

    • You should see the newly added host:

      Expand
      titleExample of Hosts page with one node

      Image Removed

      Expand
      titleExample of Hosts page has 2 nodes

      Image RemovedImage Added



3

Confirm that the host process has completed

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

Expand
titleExample of CLI option in KUBERNETES drop down

Image Removed

Install kubectl

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

Image Added


Configure Kubernetes Cluster Nodes

Repeat the following steps as many times as the number of nodes you are going to have in the Kubernetes cluster.Follow the steps below to install kubectrl:

  • From the Rancher UI, go to a Kubernetes CLI page through KUBERNETES -> CLI
  • Click on the Generate Config button to generate the config

Image Removed

The following content will be brought up; click on generated config use it in next step:

Image Removed

Create the kube config

kubectl cluster-info

Kubernetes master is running at https://10.147.132.10:8880/r/projects/1a8/kubernetes:6443

Heapster is running at https://10.147.132.10:8880/r/projects/1a8/kubernetes:6443/api/v1/namespaces/kube-system/services/heapster/proxy

KubeDNS is running at https://10.147.132.10:8880/r/projects/1a8/kubernetes:6443/api/v1/namespaces/kube-system/services/kube-dns/proxy

kubernetes-dashboard is running at https://10.147.132.10:8880/r/projects/1a8/kubernetes:6443/api/v1/namespaces/kube-system/services/kubernetes-dashboard/proxy

monitoring-grafana is running at https://10.147.132.10:8880/r/projects/1a8/kubernetes:6443/api/v1/namespaces/kube-system/services/monitoring-grafana/proxy

monitoring-influxdb is running at https://10.147.132.10:8880/r/projects/1a8/kubernetes:6443/api/v1/namespaces/kube-system/services/monitoring-influxdb/proxy

tiller-deploy is running at https://10.147.132.10:8880/r/projects/1a8/kubernetes:6443/api/v1/namespaces/kube-system/services/tiller-deploy/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

#PurposeCommand and Example
1

Download kubectl on the server

Add host name to /etc/hosts file

Adding all cluster nodes to /etc/hosts file on each node


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

Expand
titleExample 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 the kubectl command

chmod +x ./kubectl

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

result of /etc/hosts file

$ more /etc/hosts

127.0.0.1 sdnc-k8s-2 localhost

...

10.147.132.10 sdnc-k8s

10.147.90.6 sdnc-k8s-2

2

Add host to INFRASTRUCTURE

See examples from step 2 of section "Configure Rancher Client"

  • Go to the Hosts page via INFRASTRUCTURE -> Hosts
  • Click on the AddHost button
  • In Add Host page:
    • Skip steps 1, 2, and 3 listed in the page
    • In step 4, fill in the blank with the server IP
    • In step 5:

      • Click

3

Generate Config from the Rancher UI

      • the Copy to Clipboard button to copy the

      • command and

4

      • run it 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 the kube config

Expand
titleExample of validation result on kube config through "kubectl cluster-info"

Configure Kubernetes Cluster

...

    • Click on the Close button to close the Add Host page
  • Go to the Hosts page from INFRASTRUCTURE -> Hosts

    • You should see the newly added host:

      Image Added


3

Confirm that the Setup has Finished

Wait until all hosts in Rancher show green, indicating that setup is complete!