Troubleshooting

Common Issues

Pod Startup Issues

Check pod status and logs:

kubectl describe pod <pod-name>
kubectl logs <pod-name>

Common causes:

• Image pull errors
• Resource constraints
• Configuration errors
• Volume mount issues

Service Discovery Issues

Verify service configuration:

kubectl get svc
kubectl describe svc <service-name>

Common causes:

• Incorrect service names
• Port misconfigurations
• Network policy restrictions

Configuration Issues

1. Check Values

• Verify values in values-env.yaml
• Validate environment variables
• Check service connectivity

2. MongoDB Connection

# Check MongoDB pod status
kubectl get pods -l app=mongodb

# Verify MongoDB service
kubectl describe svc mongodb-service

3. Redis Connection

# Check Redis pod status
kubectl get pods -l app=redis

# Verify Redis service
kubectl describe svc redis-service

Debug Commands

Check Resources

# View resource usage
kubectl top pods
kubectl top nodes

# Check events
kubectl get events --sort-by=.metadata.creationTimestamp

Network Debug

# Test service connectivity
kubectl run -i --tty --rm debug --image=busybox --restart=Never -- wget -O- http://service-name:port

# DNS resolution
kubectl run -i --tty --rm debug --image=busybox --restart=Never -- nslookup service-name

Log Analysis

# Get logs with timestamps
kubectl logs -f --timestamps deployment/gateway-deployment

# Get previous container logs
kubectl logs --previous pod-name