Kubernetes Metrics
Kubernetes metrics reference: metrics-server, resource metrics API, kubectl top, Prometheus integration, ServiceMonitor, PodMonitor, and common metrics to monitor for cluster health.
Observability Stack — Prometheus, Grafana, Loki, Mimir
Observability reference: Prometheus for metrics, Loki for logs, Grafana for visualization, Mimir for long-term storage, plus architecture tradeoffs and deployment patterns.