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CKA study material · question 878 of 1000

A Service resolves, has correct endpoints, and each Pod answers when addressed directly, yet the Service IP does not work. What is the remaining suspect?

  1. The Pods' readiness probes
  2. The Service's selector
  3. Cluster DNS
  4. The Service proxy, kube-proxy on most clusters
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Answer: D. The Service proxy, kube-proxy on most clusters

Once name resolution, endpoints and the Pods themselves are all proven, the only layer left between the client and the backend is the Service proxy.

Source: Debug Services (Kubernetes) — Is the kube-proxy working?

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