Kubernetes Tutorial #5: Persistent Volumes and Storage in Kubernetes
Pods are ephemeral. When a Pod is deleted or rescheduled to a different node, all data written inside it is gone. This is fine for stateless apps. But databases, file uploads, and cache data need to survive Pod restarts. That is what Persistent Volumes are for. The Problem with Pod Storage By default, a container’s filesystem lives only as long as the container lives. When the container stops, the data disappears. ...