Observability

The controller exposes Prometheus metrics on :8080/metrics. Stock controller-runtime reconciler metrics (controller_runtime_reconcile_*, workqueue_*) ship alongside the scale-sentry custom collectors:

Metric	Type	Labels	Purpose
scale_sentry_runs_total	counter	verdict=pass\|warn\|fail\|unknown	Terminal-run verdict distribution
scale_sentry_run_duration_seconds	histogram	(none)	Wall-clock duration of a finished run
scale_sentry_hpa_react_seconds	histogram	(none)	First HPA scale-up reaction latency
scale_sentry_diagnostic_alerts_total	counter	alert, severity	Findings emitted by the analyzer pipeline

Prometheus Operator

To wire prometheus-operator scraping, set both gates in the chart:

helm upgrade --install scale-sentry oci://ghcr.io/ethan-kane-ops/charts/scale-sentry \
  --set metrics.service.enabled=true \
  --set metrics.serviceMonitor.enabled=true

The metrics.service block enables a ClusterIP fronting :8080; the metrics.serviceMonitor block adds a monitoring.coreos.com/v1 ServiceMonitor pointing at it. Both default to off so the chart works on clusters without prometheus-operator installed. Raw curl :8080/metrics still works without either gate.

Grafana

A starter Grafana dashboard ships at dashboards/scale-sentry.json. Import it via Grafana's + -> Import flow.