apiVersion: v1
kind: Pod
metadata:
  name: pvc-writer
spec:
  restartPolicy: Never
  containers:
    - name: writer
      image: busybox:1.36
      command: ["sh", "-c", "echo pvc-ok > /data/check.txt; sleep 300"]
      volumeMounts:
        - name: app-data
          mountPath: /data
  volumes:
    - name: app-data
      persistentVolumeClaim:
        claimName: app-data