Alert Labels not updated while alert is firing

[mweinelt]

What did you do?

Created an alert rule that passes the value as a label.

What did you expect to see?

The label value should be updated while the alert is firing.

What did you see instead? Under which circumstances?

The label value was stuck at the value when it initially triggered.

Environment

• System information:

Linux 4.9.0-5-amd64 x86_64

• Prometheus version:

prometheus, version 2.0.0 (branch: HEAD, revision: 0a74f98)
build user: root@615b82cb36b6
build date: 20171108-07:11:59
go version: go1.9.2

• Prometheus configuration file:

alert: RoomHighTemp
expr: arduino_temperature{job="c303env"}
  > 28
for: 10m
labels:
  severity: page
  value: '{{ $value }}'
annotations:
  description: The air temperature in C303 is above 28°C
  summary: Air temperature in C303 is {{ $value }}°C

• Example:

[brian-brazil]

Alerts are defined by their labels, having varying alert labels like this is a bad idea. Use annotations instead.

It makes more sense to ask questions like this on the prometheus-users mailing list rather than in a GitHub issue. On the mailing list, more people are available to potentially respond to your question, and the whole community can benefit from the answers provided.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.