K8s Production Issues: A Quick Guide with Troubleshooting Steps

Welcome to K8s Production Issues, your ultimate guide to tackling real-world Kubernetes challenges! 🚀

This comprehensive resource covers 25 common K8s problems, including:

Table of contents

Problems 1 - 13

• CrashLoopBackOff
• Pod Pending Status
• ImagePullBackOff
• Liveness Probe Failure
• Readiness Probe Failure
• OOMKilled (Out of Memory)
• Node Not Ready
• Service Unavailable
• DNS Resolution Issues
• Storage Volume Not Mounted
• ConfigMap/Secret Not Found
• Rolling Update Failure
• Horizontal Pod Autoscaler (HPA) Not Scaling

Problems 14 - 25

• Network Policy Blocking Traffic
• Ingress Not Routing Traffic
• Certificate Manager Issues
• High CPU/Memory Utilization
• Resource Quota Exceeded
• CronJob Not Running
• Service Account Permission Denied
• External IP Not Assigned
• Cluster Autoscaler Failure
• Etcd Performance Bottlenecks
• API Server Unreachable
• kubectl Command Not Working

Each problem is paired with debugging commands and effective solutions to help you become a production expert.

Swipe through to enhance your troubleshooting skills and ensure your K8s environment runs smoothly!