This document is specific to the London RedCentric lab, but should evolve to a more generic setup once we have more labs. For now, there are some hard-coded logic in the wiki as well as the scripts, to make sure we can reproduce at least the one lab we have. Once we have more labs, we'll work to automate that using configuration files, command line options, etc.

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You may get two warnings when you log in to Jenkins, which can be corrected on the Global Security screen:

• Agent to master security subsystem is currently off: Check the box saying "Enable Agent → Master Access Control"
• Jenkins instance uses deprecated protocols: JNLP3-connect: Uncheck the box "Java Web Start Agent Protocol/3" in "Agent Protocols"
  

Save the configuration and you should be all set.

Installing the Jenkins Jobs

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Clone the repository

root@hpc-admin # git clone https://github.com/Linaro/hpc_lab_jenkins.git
root@hpc-admin # cd hpc_lab_jenkins

Create the authorisation files

Then, you need to find your API token in Jenkins. That's done by clicking on your username (top right corner) > Configure > API Token > Show API Token.

This will show your user ID and token. That token is what below is referenced as APITOKEN.

Create the authorisation files

hpc_lab_jenkins/vars/jenkins_cred.yml.secret:

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Run the playbook

root@hpc-admin # git clone https://github.com/Linaro/hpc_lab_jenkins.git
root@hpc-admin # cd hpc_lab_jenkins
root@hpc-admin # ansible-playbook -vvv -u root hpc_jobs_deploy.yml

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jslave_tokens:
  - jslave: jslave-d03-benchmark
    token: APITOKEN
  - jslave: jslave-d03-openhpc
    token: APITOKEN
etc...

and then run the playbook:

root@hpc-admin # ansible-playbouok -vvv -u root mrp_put_tokens.yml

Now that the SSH Keys, Tokens and accounts are in place, all you have to do is assign the slaves to the right machines and ensure that you use the jinja templating in the preseeds in MrP.

Updating Jenkins Jobs

Once the jobs are installed and working, on every change pertaining the Jenkins configuration, you just need to update the repo and run the same playbook again:

root@hpc-admin # cd hpc_lab_jenkins
root@hpc-admin # git fetch -a & git pull
root@hpc-admin # ansible-playbook -vvv -u root hpc_jobs_deploy.yml

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