Debugging Service connectivity between Pods
WHAT IT TESTS: Systematic Service debugging. OUTLINE: kubectl get endpoints to check the Service has Pod IPs (selector match); kubectl describe service to verify selector and ports; exec into the frontend to curl the Service DNS name.
WHAT IT TESTS: Whether you debug the Service-to-Pod chain methodically. ANSWER OUTLINE: First kubectl get endpoints SERVICE (or get endpointslices) to confirm the Service actually has backing Pod IPs; empty endpoints means the selector does not match the Pods' labels or the Pods are not Ready. Next kubectl describe service to verify the selector, targetPort, and port. Then kubectl exec into the frontend Pod and curl the backend Service DNS name to test resolution and reachability. Also check NetworkPolicies.
Read the original → interview
- #kubernetes
- #debugging
- #services
- #endpoints
- #networking
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