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DevOps & Automation · Intermediate

Persistent Volume (PV)

A cluster-scoped Kubernetes storage resource provisioned by an administrator or dynamically by a StorageClass.

Definition

PVs have capacity, access modes (ReadWriteOnce, ReadOnlyMany, ReadWriteMany, ReadWriteOncePod), and reclaim policies (Retain, Delete). Their lifecycle is independent of pods.

Example

A 10Gi PV backed by an NFS export with accessModes: [ReadWriteMany].

Exam tip

ReadWriteOnce means one node, not one pod; use ReadWriteOncePod for a single pod.

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