Remove finished drone jobs and pods from cluster

Why

We've created this simple image and corresponding files to deal with the fact that Drone does not clean up jobs after itself.

Official documentation will tell you to enable TTLAfterFinished feature gate.

However, for some, that's simply not possible, as the TTL controller is available only from Kubernetes v1.12 on. And it's alpha so it's bound to change.

If you're on older version (e.g. kops only supports 1.11), you're left out in the dark.

How

This is a simple script which should be scheduler to run on your cluster every now and then - suggested timeout is 10 minutes, but you can set it to anything you like. Please see the attached example for more info.

Please note that you'll need to deploy a service account with this tool to access your cluster from inside the pod, if you have RBAC enabled.

Configuration

Nothing much to configure. Defaults should work in most cases. However, if you have any specifics, you can set up the following environment variables:

• TTL_TIMEOUT timeout after which completed jobs and pods are deleted. By default it's set to 3600 seconds - so jobs and pods get cleared out after one hour.

Installation

kubectl apply -f drone-cleanup.yml

Please make sure that you set an appropriate namespace (drone, by default) in drone-cleanup.yml as the script will look for jobs in the current namespace only.