onfido / k8s-cleanup

Kubernetes cleanup

k8s-cleanup

Here are 3 cleanups you can apply on your kubernetes cluster:

• Cleans up exited containers and dangling images/volumes running as a DaemonSet (docker-clean.yml).
• Cleans up old replica sets, finished jobs and unrecycled evicted pods as a CronJob (k8s-clean.yml).
• Cleans up empty directory (not used anymore) in etcd as a CronJob (etcd-empty-dir-cleanup.yml).

You must have batch/v2alpha1 enabled on your k8s API server runtime config in order to run the CronJob.

Env vars

In the DaemonSet (docker-clean.yml) you can set DOCKER_CLEAN_INTERVAL to modify the interval when it cleans up exited containers and dangling images/volumes; defaults to 30min (1800s).

In the CronJob (k8s-clean.yml) you can set DAYS to modify the maximum age of replica sets; defaults to 7 days.

Deployment

kubectl --context CONTEXT -n kube-system apply -f rbac.yml
kubectl --context CONTEXT -n kube-system apply -f docker-clean.yml
kubectl --context CONTEXT -n kube-system apply -f k8s-clean.yml
kubectl --context CONTEXT -n kube-system apply -f etcd-empty-dir-cleanup.yml

k8s-cleanup's Issues

Add tag to docker images

Can you please release docker image tagged with specific version to it, to allow us to lock to specific versions in our deployments?

Helm package

Nice work. A helm package would be great... easier to deploy and upgrade ;-)

interfere of docker-clean and k8s-clean tasks?

With the last line of CMD in the dockerfile running "docker-clean.sh", won't the launch of a k8s-clean cronjob pod also trigger the running of docker-clean at the same time?