Kubernetes, end‑to‑end — for someone who already runs it

Every core concept, controller, and failure mode you'll be asked about, organized the way a control plane actually thinks: architecture → workloads → networking → config/storage → scheduling → security → health → observability → GitOps → Spring Boot patterns → troubleshooting. Search to jump straight to a topic, or switch to Rapid Recall to drill just the one‑liners.