Kubernetes - Introduction to PV and PVC of advanced storage

One 、PV and PC brief introduction

Kubernetes There are many supported storage systems ,NFS It's just one of them , In order to shield the implementation details of the underlying storage , Convenient for users ,Kubernetes Introduced PV and PVC Two resource objects

PV（Persistent Volume） It means persistent volume , It is an abstraction of the underlying shared storage , In general PV from Kubernetes Administrators create and configure , It is related to the underlying specific shared storage technology , And complete the connection with its shared storage through plug-ins

PVC（Persistent Volume Claim） Is the meaning of persistent volume declaration , It is a statement of the user's storage requirements , let me put it another way ,PVC In fact, users want to Kubernetes A resource demand application issued by the system

The specific structure is as follows ：

Used PV and PVC after , Work can be further divided into

• Storage ： Storage engineer maintenance
• PV：Kubernetes Administrator maintenance
• PVC：Kubernetes User maintenance