provisioning/datasources/prometheus.yml - adds Prometheus at http://prometheus:9090.
provisioning/dashboards/monlet.yml - loads dashboards from /var/lib/grafana/dashboards.
dashboards/monlet-overview.json - starter dashboard for agent status, open incidents, event ingest rate, and notification rate.

Run it with:

cd deploy
MONLET_AUTH_TOKEN=$(openssl rand -hex 16) docker compose --profile observability up

Grafana is exposed at http://127.0.0.1:3001. The local default is admin / admin unless GF_ADMIN_PASSWORD is set. Change it before exposing Grafana outside local development.