Step-by-step playbooks for when things go sideways. Interactive checklists with copy-paste commands.
Diagnose and fix Nginx 504 timeout errors caused by slow backend responses. Covers response time measurement, backend diagnostics, timeout tuning, and database query analysis.
Click through symptoms to diagnose why your Kubernetes pod won't start. Covers CrashLoopBackOff, ImagePullBackOff, Pending, and Error states with targeted fix commands.
Diagnose why a Kubernetes service can't be reached. Walks through pod connectivity, service selectors, endpoints, network policies, and ingress configuration.
Interactively diagnose and fix a full disk on Linux. Branches into /var issues, Docker cleanup, log rotation, inode exhaustion, and deleted-but-open files.
Diagnose high CPU or memory usage on Linux. Branches into process identification, OOM killer analysis, memory leaks, CPU steal, and swap management with targeted fix commands.