Tracing

• Observability

  The four observability pillars for the controller — structured logging, OTLP tracing, Prometheus metrics, and the opt-in alert catalog — plus service level objectives and a ready-made dashboard.

• Tracing

  OpenTelemetry tracing for the controller — the --tracing-endpoint, --tracing-insecure, and --tracing-sample-ratio flags, pointing at an OTLP collector, and the chart values that drive them.