Which Kubernetes resource is used to persist data beyond the lifecycle of a pod?

Which Kubernetes resource is used to persist data beyond the lifecycle of a pod?

• A. ConfigMap
• B. Service
• C. PersistentVolume
• D. Secret

Answer: (C)

Pods are ephemeral, so to keep data after a pod ends you need durable storage provided by Kubernetes. A PersistentVolume represents a piece of storage in the cluster with a defined capacity and access mode, and it persists independently of any pod. When a pod is recreated or moved, the data remains accessible because it’s backed by the PV. Pods access this storage through a PersistentVolumeClaim, which binds to a suitable PV and is mounted into the pod. This separation—PV as the actual storage resource and PVC as the claim to use it—allows data to survive pod lifecycles and supports dynamic provisioning and different reclaim policies (such as Retain or Delete), giving control over what happens to the storage when the claim is released. ConfigMap holds configuration data, not durable storage. Service handles network access to pods, not storage. Secret stores sensitive data, not durable file storage.

Pods are ephemeral, so to keep data after a pod ends you need durable storage provided by Kubernetes. A PersistentVolume represents a piece of storage in the cluster with a defined capacity and access mode, and it persists independently of any pod. When a pod is recreated or moved, the data remains accessible because it’s backed by the PV. Pods access this storage through a PersistentVolumeClaim, which binds to a suitable PV and is mounted into the pod.

This separation—PV as the actual storage resource and PVC as the claim to use it—allows data to survive pod lifecycles and supports dynamic provisioning and different reclaim policies (such as Retain or Delete), giving control over what happens to the storage when the claim is released.

ConfigMap holds configuration data, not durable storage. Service handles network access to pods, not storage. Secret stores sensitive data, not durable file storage.