How to resize the jenkins-home storage volume

The default size of the jenkins-home storage volume for a fresh installation is 1GB. While this works for most scenarios, operators might need to have more storage for installing plugins, storing artifacts, and running builds/checking out SCMs on the built-in node.

A low disk-space on the built-in node will cause the node to go offline, blocking Jenkins from running jobs.

Create a backup of the current Jenkins charm instance

Follow the “Create a backup” section of the charm’s backup and restore documentation to create an archive of the Jenkins data on your host system

Deploy the new Jenkins charm instance, specifying the size of the storage volume

Create a new application with the --storage flag. In this example we’ll deploy the charm with a storage of 10GB:

juju deploy jenkins-k8s-new --storage jenkins-home=10GB

Restore the created backup onto the newly created Jenkins charm instance

Follow the “Restore the backup on a new (or existing) charm instance” section of the charm’s backup and restore documentation to create an archive of the Jenkins data on your host system. Remember to update the JENKINS_UNIT environment variable. For our example we have JENKINS_UNIT=jenkins-k8s-new/0.