What is the difference between persistent volume (PV) and persistent volume claim (PVC) in simple terms?

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我在风中等你
我在风中等你 2021-01-30 19:22

What is the difference between persistent volume (PV) and persistent volume claim (PVC) in Kubernetes/ Openshift by referring to documentation?

What is the difference be

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  •  有刺的猬
    2021-01-30 20:21

    A PersistentVolume (PV) is a piece of storage in the cluster that has been provisioned by server/storage/cluster administrator or dynamically provisioned using Storage Classes. It is a resource in the cluster just like node.

    A PersistentVolumeClaim (PVC) is a request for storage by a user which can be attained from PV. It is similar to a Pod. Pods consume node resources and PVCs consume PV resources. Pods can request specific levels of resources (CPU and Memory). Claims can request specific size and access modes (e.g., they can be mounted ReadWriteOnce, ReadOnlyMany or ReadWriteMany.

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