Alerting Rules

Write, test, and manage Prometheus alerting rules and Alertmanager routing configuration on a Raspberry Pi home lab. Covers rule syntax, alert grouping, receiver setup, inhibition rules, and integration with ntfy for push notifications.

Trigger

• User asks about creating or editing Prometheus alerts
• User wants notifications when a service goes down or a threshold is breached
• User mentions "alert", "alerting", "Alertmanager", "notification", or "firing"
• User asks why alerts are not firing or notifications are not arriving
• User wants to silence or inhibit specific alerts
• User asks about alert routing or grouping configuration

Required Inputs