Introducing PersistentVolume (PV)

To tackle these issues, Kubernetes provides the PersistentVolume (PV) object. PersistentVolume is a variation of the Volume Object, but the storage capability is associated with the entire cluster, and not with any particular Pod.

Consuming PVs with PersistentVolumeClaim (PVC)

When an administrator wants a Pod to use storage provided by a PV, the administrator would create a new PersistentVolumeClaim (PVC) object and assign that PVC Object to the Pod. A PVC object is simply a request for a suitable PV to be bound to the PVC (and thus the Pod).

After the PVC has been registered with the Master Control Plane, the Master Control Plane would search for a PV that satisfies the criteria laid out in the PVC, and bind the two together. For instance, if the PVC requests a PV with at least 5 GB of storage space, the Master Control Plane will only bind that PVC with PVs which have at least 5 GB of space.

After the PVC has been bound to the PV, the Pod would be able to...