Alerting in influxdb - multiple temperature sensors - when one is missing

Grafana InfluxDB
1

I have a bunch of battery temperature sensors…they are all feeding into influx measurements, one per sensor.

This will pick them up for display:

SELECT mean("value") FROM /temperature/ WHERE $timeFilter GROUP BY time($__interval) fill(0)

I’m trying to get alerting going, Ideally all I currently care about is when one of the sensors has not reported is say 30 mins.

With one alert, a count() condition, can that detect a single series has stopping reporting? Or do I need to create an individual axis query for each sensor, with a corresponding alert?

2

You should be able to do it with one query. Your count query idea should work.