这里使用了k8s自身的持久化卷存储机制:PV和PVC.各组件之间的关系参考下图: PV的Access Mode(访问模式) The access modes are: ReadWriteOnce – the volume can be mounted as read-write by a single node ReadOnlyMany – the volume can be mounted read-only by many nodes ReadWriteMany – the volume c