How to delete all evicted pods in kubernetes
2021-09-01 - A quick note for future reference
Tags: k3s kubernetes
I was playing with the percona xtradb operator on one of my test clusters last week and left it in a state where mysqld error logs were piling up over the week-end. On Monday morning my nodes had their file systems full and I discovered what kubernetes evicted pods were : pods that fail when a node’s resources get constrained.
My problem is : these evicted pods lingered, so I looked for a way to clean them up.
How to delete all evicted pods
My google fu directed me towards several commands similar to the following, but they all had a thing or another that did not work properly. Here is the one I pieced together from these various sources :
kubectl get pods --all-namespaces -o json | jq '.items | select(.status.reason!=null) | select(.status.reason | contains("Evicted")) | "kubectl -n \(.metadata.namespace) delete pod \(.metadata.name)"' | xargs -n 1 bash -c