Continuous integration/Jenkins

Jenkins is a Java tool used to handle recurring tasks such as running tests or building packages. Our primary install is at https://integration.wikimedia.org/ci/.

The tool is permanently connected to our review tool (Gerrit) and can be made to react on changes submitted to Gerrit. A typical example, is running MediaWiki unit tests whenever a change is submitted to the  repository.

The main repository for the layout of Jenkins itself is  (installed in   script for Jenkins is broken (unable to find the PID, T53817).}}

Zuul should not be restarted. Zuul preserves the queue and continues after the restart.

Via web interface

Apply the self-serve Jenkins repair!

With a  any currently running jobs will block a restart until they are canceled. Any long running jobs should be killed. Check for jobs on the main jenkins dashboard, cancel any long-running jobs there. Bonus points: make a note of the patches for which you have canceled jobs on the zuul dashboard, comment "recheck" for any patches in the test queue that you have aborted.


 * 1) Head to https://integration.wikimedia.org/ci/safeRestart
 * 2) Login with your labs account being part of the 'wmf' LDAP group
 * 3) press "Yes"
 * 4) in : "!log restarting stuck Jenkins".

Shell

On gallium.wikimedia.org, find the PID of Jenkins (it is a java process) and  it.

Ensure the process is gone (grep through ).

$ sudo /etc/init.d/jenkins start

'demon', 'krinkle', 'reedy', 'mholmquist' have the proper sudo rights. And ops of course :-]

Debugging
Start Jenkins with Java option:

-Dhudson.plugins.git.GitSCM.verbose="true"

Text thread dump: https://integration.wikimedia.org/ci/monitoring?part=threadsDump