[Solved] Given a pod in namespace frontend running:curl api.backend.svc.cluster.localWhat will happen if the api service in backend namespace does not exist? | Kubernetes

Kubernetes - Namespaces

Given a pod in namespace frontend running:

curl api.backend.svc.cluster.local

What will happen if the api service in backend namespace does not exist?

AThe curl command will fail with a DNS resolution error

BThe curl command will succeed but return empty response

CThe curl command will connect to a default service

DThe pod will restart automatically

Step-by-Step Solution

Solution:

Step 1: Understand DNS resolution in Kubernetes
If the service does not exist, DNS lookup for api.backend.svc.cluster.local fails.
Step 2: Effect on curl command
Without DNS resolution, curl cannot connect and returns an error.
Final Answer:
The curl command will fail with a DNS resolution error -> Option A
Quick Check:
Missing service causes DNS failure [OK]

Quick Trick: Missing service causes DNS failure, curl errors out [OK]

Common Mistakes:

Master "Namespaces" in Kubernetes

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