Introduction

Applications that maintain data need more than a reliable way to run containers. They also need predictable identities, stable network addresses, and storage that remains available when Pods are replaced.

In this mission, I deployed a StatefulSet on Azure Kubernetes Service (AKS), paired it with a headless Service, and provisioned persistent Azure Disk volumes for its replicas. I then wrote data from inside a Pod, deleted that Pod, and verified that the replacement could still access the data. Finally, I tested the StatefulSet's DNS identity from another Pod in the cluster.

The objective was to demonstrate how Kubernetes supports stateful workloads whose identity and data must survive individual Pod replacement.

What This Part Covers

Inspecting the available Kubernetes StorageClasses.

Creating a headless Service.

Defining a StatefulSet with two replicas.

Provisioning persistent storage through managed-csi .

Verifying Pod identities and PersistentVolumeClaims.

Writing data to a Pod's…