Remove unmounted/unused PVCs
hjacobs opened this issue · 2 comments
hjacobs commented
Kubernetes Janitor should allow deleting PersistentVolumeClaims which are no longer mounted or referenced, e.g. because the StatefulSet was deleted.
PVCs are not automatically deleted and it's easy to forget them. From https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/:
Deleting and/or scaling a StatefulSet down will not delete the volumes associated with the StatefulSet. This is done to ensure data safety, which is generally more valuable than an automatic purge of all related StatefulSet resources.
Idea: add additional context properties which can be used in the rule jmespath.
hjacobs commented
To delete all unused PVCs, use a rules file (--rules-file option) with the following contents:
rules:
- id: remove-unused-pvcs
resources:
- persistentvolumeclaims
jmespath: "_context.pvc_is_not_mounted && _context.pvc_is_not_referenced"
ttl: 24h