opendev/system-config
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Merge "Add doc on using jenkins restart playbook."

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Jenkins 2015-12-10 21:11:58 +00:00 committed by Gerrit Code Review
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doc/source/jenkins.rst
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@ -165,3 +165,26 @@ slave is then:
#. Set appropriate labels on it
#. Profit!
Safe Master Restarts
====================
Jenkins masters periodically leak threads reducing their job
throughput and eventually leading to crashes. We work around this
by performing weekly rolling restarts of the Jenkins masters with
an ansible playbook.
If you need to perform a safe restart against a single master you
can do this by running the same playbook and limiting it to a
specific jenkins master
To do this::
root@puppetmaster# ansible-playbook -f1 --limit $server_fqdn \
/opt/system-config/production/playbooks/restart_jenkins_masters.yaml \
--extra-vars "user=hudson-openstack \
password=$(/opt/system-config/production/tools/hieraedit.py \
--yaml /etc/puppet/hieradata/production/fqdn/nodepool.openstack.org.yaml jenkins_api_key)"
Consider running this in screen as the worst case run time is as
long as our longest running job.