holmesgpt Service Connectivity Issues
Overview
Troubleshooting Kubernetes service connectivity problems.
Investigation Steps
1. Service Configuration
kubectl get svc {service_name} -n {namespace} -o yaml
kubectl get endpoints {service_name} -n {namespace}
2. Backend Pods
kubectl get pods -n {namespace} -l {selector}
3. Test Connectivity
kubectl run -it --rm debug --image=busybox --restart=Never -- wget -O- {service_name}:{port}
4. Network Policies
kubectl get networkpolicies -n {namespace}
Common Service Issues
- No endpoints (no matching pods)
- Selector mismatch
- Wrong target port
- Network policy blocking
- Service type misconfiguration