Alertmanager
Example Alertmanager configuration for the optional observability profile.
alertmanager.yml is intentionally safe by default: it routes to a null
receiver, so alerts are grouped but dropped. Before using it outside local
development, add a real receiver and set route.receiver to that receiver.
Monlet can also send notifications to Alertmanager through the server notifier:
MONLET_NOTIFIER_ALERTMANAGER_ENABLED=true
MONLET_NOTIFIER_ALERTMANAGER_URL=http://alertmanager:9093
Keep labels stable and low-cardinality. The example groups by alertname,
agent_id, and check_id; do not add timestamps, event IDs, or output text to
Alertmanager labels.