Graceful Shutdown and SIGTERM: Deploy Without Dropping Requests
How graceful shutdown and SIGTERM handling let services finish in-flight requests during deploys and pod restarts, and how to avoid dropped connections.
Kubernetes CrashLoopBackOff: Causes and How to Fix It
What CrashLoopBackOff means, the common reasons a pod keeps restarting, and a step-by-step way to diagnose and fix the crash loop with kubectl.
Kubernetes ImagePullBackOff and ErrImagePull: How to Fix
What ImagePullBackOff and ErrImagePull mean, why Kubernetes can't pull your container image, and how to diagnose and fix the most common causes.
Kubernetes OOMKilled (Exit Code 137): Causes and Fixes
Why Kubernetes kills pods with OOMKilled and exit code 137, how memory requests and limits cause it, and how to diagnose and fix out-of-memory restarts.
Health Check Endpoints: /health, /livez, /readyz Guide
Design health check endpoints that catch real failures. Learn liveness vs readiness, deep checks, and what to expose to monitors and Kubernetes.
Kubernetes Monitoring: Health Checks, Pod Uptime, and Alerting
Kubernetes clusters fail in ways that traditional monitoring misses. Learn how to monitor pod health, service endpoints, and set up alerts for K8s downtime.