Kubernetes - Troubleshooting
Why might a Kubernetes service have endpoints listed but still fail to route traffic correctly?
Why might a Kubernetes service have endpoints listed but still fail to route traffic correctly?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand endpoints vs traffic flow
Endpoints show pods matched by selector, but traffic can still be blocked by network policies or firewalls.Step 2: Rule out selector and service type issues
Incorrect selector means no endpoints. NodePort type does not block traffic by itself. Resource limits do not affect routing.Final Answer:
Network policies or firewall rules block traffic -> Option CQuick Check:
Endpoints exist but traffic blocked by network policies [OK]
Quick Trick: Endpoints exist but network policies can block traffic [OK]
Common Mistakes:
- Assuming endpoints guarantee traffic flow
- Blaming service type without checking policies
- Confusing resource limits with connectivity
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