Monitoring & Observability Cheat Sheet (Printable PDF)

For the point where "I'll notice if something breaks" stops being true.

Use it when: you're deciding what to actually watch before you install anything. When a box is slow and you need the four numbers that tell you which resource ran out. When you're writing the check that sends you a message instead of filling a dashboard nobody opens.

On the sheet: CPU, memory, disk and network from the command line, what logs and metrics each answer and what they don't, and the handful of checks worth having before you own a monitoring stack.

Not on it: Prometheus configuration, Grafana dashboards, or vendor setup. This is the layer underneath — the part that still works when you have one server and no budget.

Format: 3-page US Letter PDF, dark terminal theme, print-ready. Instant download, no account needed.

Made by ITorWhat — Wear Your Stack.