How are pods in a Kubernetes StatefulSet named?

How are pods in a Kubernetes StatefulSet named?

• A. DNS names reflect the original Pod name only
• B. Sequentially, starting from zero and prefixed with the StatefulSet name
• C. Randomly assigned identifiers at each restart
• D. Cluster-wide hash based names

Answer: (B)

Pods in a StatefulSet are named with a stable, predictable pattern based on the StatefulSet’s name plus a zero-based index. For a StatefulSet named web, you’ll see web-0, web-1, web-2, and so on. This gives each pod a consistent network identity that persists across rescheduling, and its DNS hostname becomes web-0, web-1, etc., allowing stateful applications to reach a specific replica reliably. This predictable, ordinal naming is what enables stable addressing, unlike random or hashed naming.

Pods in a StatefulSet are named with a stable, predictable pattern based on the StatefulSet’s name plus a zero-based index. For a StatefulSet named web, you’ll see web-0, web-1, web-2, and so on. This gives each pod a consistent network identity that persists across rescheduling, and its DNS hostname becomes web-0, web-1, etc., allowing stateful applications to reach a specific replica reliably. This predictable, ordinal naming is what enables stable addressing, unlike random or hashed naming.