The ephemeral storage issue in my Kubernetes cluster

General Discussions
5

I have keep monitoring the mount point /var by executing command - “du -h -d1 /var” during the the problem was happened. It is found the “/var/lib/docker/overlay2” is occupied most of space under /var. I have performed docker space clean with “docker system prune -a -f”, however, it did not help until restart the K8s pods and re-pulling all the images.