Cannot work on kubernetes 1.9 because changed spec about persistent volume

[h-otter]

$ kubectl describe persistentvolumeclaim
Name:          datadir-galera-0
Namespace:     default
StorageClass:
Status:        Pending
Volume:
Labels:        app=galera
Annotations:   <none>
Finalizers:    []
Capacity:
Access Modes:
Events:
  Type    Reason         Age               From                         Message
  ----    ------         ----              ----                         -------
  Normal  FailedBinding  2m (x26 over 9m)  persistentvolume-controller  no persistent volumes available for this claim and no storage class is set