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CKA study material · question 640 of 1000

A StatefulSet's Pods have no resolvable DNS names. Which omission would cause that?

  1. No headless Service was created for the set
  2. podManagementPolicy was left at OrderedReady
  3. The Pods have no readiness probe
  4. volumeClaimTemplates was not specified
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Answer: A. No headless Service was created for the set

A StatefulSet requires a headless Service to give its Pods network identity, and creating that Service is the user's responsibility rather than the controller's.

Source: StatefulSets (Kubernetes) — Limitations

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