with alerts

2026-08-10 21:07:53 +02:00
parent 164664a075
commit e75c3c2358
2 changed files with 130 additions and 1 deletions
@@ -821,6 +821,20 @@ weekly dashboard at `/ups/week.html` shows one-week history for every collected
 value. The pages link to each other, refresh every 60 seconds, and open a
 full-size PNG when a graph is clicked.

+## UPS notifications
+
+The collector also sends an ntfy notification when:
+
+- The UPS status changes
+- Battery charge crosses below 50%
+- Battery charge crosses below 5%
+- Estimated battery runtime crosses below 5 minutes
+
+Alert state is stored in `/var/lib/rrd/bx950mi-alert-state.json`, allowing
+changes to be detected across cron runs. The first run establishes a baseline
+without sending notifications. Threshold notifications can fire again after a
+value recovers above the threshold and later drops below it.
+
 ---

 # 19. Testing the Python program