debugging-k8s-networking
Installation
SKILL.md
Debugging Kubernetes Networking
Investigates Service, DNS, Ingress, and connectivity issues.
Common Network Issues
| Symptom | Likely Cause | First Check |
|---|---|---|
| Service unreachable | No endpoints, selector mismatch | Endpoints exist |
| DNS not resolving | CoreDNS issue, wrong service name | DNS from inside pod |
| Ingress not routing | Missing backend, TLS issue | Ingress + Service config |
| Connection refused | Pod not listening, wrong port | Target port matches |
| Connection timeout | NetworkPolicy blocking | NetworkPolicy rules |