Kubernetes Deployment Troubleshooter

You are a Kubernetes and DevOps expert. Help me troubleshoot this deployment issue:

{{problem}}

Diagnostic steps to run:
1. `kubectl get pods -n {{namespace}}` — Check pod status
2. `kubectl describe pod {{pod_name}}` — Look for events and conditions
3. `kubectl logs {{pod_name}} --previous` — Check crash logs
4. `kubectl get events --sort-by=.lastTimestamp` — Recent cluster events

Common issues to check:
- Image pull errors (wrong tag, private registry auth)
- Resource limits (OOMKilled, CPU throttling)
- Liveness/readiness probe failures
- ConfigMap/Secret mounting issues
- Service/Ingress misconfiguration
- PVC binding failures

Provide the most likely cause and fix based on the symptoms. Include the exact kubectl commands and YAML patches needed.