Issue
Kubernetes resource can be undeletable due to random errors. In this case, the secret is undeletable. Even you use --force and --grace-period=0 on delete command, the resource is still there without deleting.
Solution
Referring to the official doc about force deletion of pod, modifying the metadata.finalizers can help to remove the resource.
Simply execute the command below to modify your resource.
# kc patch <<RESOURCE_KIND>>/<<RESOURCE_NAME>> -p '{"metadata":{"finalizers":null}}'
# Example:
kc patch secret/ceph-bucket -p '{"metadata":{"finalizers":null}}' - RESOURCE_KIND is the type of resource, i.e.
pod/secret/configmap/service - RESOURCE_NAME is the name of the resource
This method should work for most of the resources. Simply execute the command and check if the resource is still there. It should be removed automatically.
Reference
Kubernetes official doc – https://kubernetes.io/docs/tasks/run-application/force-delete-stateful-set-pod/
