helm 사용하다가 helm upgrade가 안되는 문제가 발생했어요 Upgrade "airflow" failed: cannot patch "airflow" with kind PersistentVolumeClaim: PersistentVolumeClaim "grafana" is invalid: spec: Forbidden: is immutable after creation except resources.requests for bound claims 검색해보니, helm3는 deployment 내역을 secret으로 관리한데요 Since Helm 3, Helm supports three-way merge patch strategy², which makes it safer to bypass the error..