Persistent Volumes and Claims

Pods are born and die, but your application's data often needs to live on. Think of a database or user-uploaded files.

• When a Pod restarts or is rescheduled, any data stored directly within its container filesystem is lost.
• This ephemeral nature is fine for stateless applications, but critical data needs a durable solution.
• Kubernetes provides a powerful system to manage persistent storage that survives Pod lifecycles.

A PersistentVolume (PV) is a piece of storage in your Kubernetes cluster.

• It's a cluster-scoped resource, meaning it doesn't belong to any specific namespace.
• PVs are provisioned by an administrator or dynamically by a StorageClass.
• They abstract away the details of the underlying storage technology (e.g., Google Persistent Disk, AWS EBS, NFS share).