Kubernetes Troubleshooting Decision Trees#

Troubleshooting Kubernetes in production is about eliminating possibilities in the right order. Every symptom maps to a finite set of causes, and each cause has a specific diagnostic command. The decision trees below encode that mapping. Start at the symptom, follow the branches, run the commands, and the output tells you which branch to take next.

These trees are designed to be followed mechanically. No intuition required – just execute the commands and interpret the results.