apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: simpleasm-data
  namespace: cube-simpleasm
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  # storageClassName 留空 → 走 k3s 默认 local-path（hostPath，单节点足够）