Managing stateful applications and their storage requirements is time-consuming and error-prone.

Automatic Storage Orchestration

With Kubernetes, you can fully rely on the control plane to manage storage for your stateful applications:

• Automatic provisioning and attachment of storage volumes

• Seamless data persistence across pod lifecycle events

• Built-in mechanisms for maintaining pod identity and state

Key Components of StatefulSet Storage

1. Persistent Volume Claims (PVCs): Requests for storage resources

2. Volume Claim Templates:

   • Define the PVC specification within the StatefulSet

   • Automatically generate PVCs for each pod in the StatefulSet

   • Example: If a StatefulSet has 3 replicas, 3 PVCs will be dynamically created

3. Persistent Volumes (PVs): Actual storage resources that fulfill PVCs

4. Storage Orchestration:

   • Each StatefulSet pod gets its own PVC, generated from the template

   • PVC binds to an appropriate PV

   • PV is mounted at the specified directory in the stateful container