Can you explain the meaning and purpose of the PV resource in Kubernetes?

In Kubernetes, the PV (Persistent Volume) resource is an abstraction of persistent storage independent of the pod's lifecycle.

PV is a part of physical or cloud storage (e.g., disk, NFS, cloud disk) allocated for use in the cluster.

Purpose of PV:

• To provide persistent data storage that remains even after the pod is deleted or restarted.
• To separate storage management from pod management.

Users request storage through PersistentVolumeClaim (PVC), which is bound to an appropriate PV.

Example:

• An administrator creates a PV, specifying storage parameters.
• A developer creates a PVC with the required size and class.
• Kubernetes binds the PVC to the PV, and the pod mounts this storage.

Thus, PV provides a convenient and standardized way to work with persistent storage in Kubernetes.