apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc-mariadb
  namespace: nextcloud
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: local-path   # <-- explicit default StorageClass
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-mariadb
  labels:
    app: mariadb
spec:
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: local-path
  claimRef:
    namespace: nextcloud
    name: pvc-mariadb
  hostPath:
    path: /var/lib/mariadb-data
    type: DirectoryOrCreate