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CKA study material · question 386 of 1000

Which test distinguishes a DNS fault from a proxying fault for a Service?

  1. Running kubectl describe service
  2. Restarting CoreDNS
  3. Connecting to the Service's cluster IP directly
  4. Recreating the EndpointSlice
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Answer: C. Connecting to the Service's cluster IP directly

Testing the cluster IP directly bypasses DNS, so a working IP with a failing name is a DNS problem.

Source: Debug Services (Kubernetes) — Does the Service work by IP?

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