Missing time offset in /alerts

[shanemhansen]

The offset is missing when I view my rule in /alerts. So I can't tell if my alert is comparing traffic ratios between now and yesterday or if it's looking and now and now.

From prometheus.rules:

ALERT Spike500
    IF (httpResponseCode5xx:sum/(httpResponseCode5xx:sum offset 1d) > 10)
    FOR 1m
    SUMMARY "{{$labels.origin}} 5xx error spike"
    DESCRIPTION "{{$labels.origin}} spike in 5xx exceptions."

Notice that this query looks for websites a 10x spike in errors day over day, but only if the site gets enough traffic.

In http://$host:9090/alerts the alert is displayed as:

ALERT Spike500
  IF (httpResponseCode5xx:sum / (httpResponseCode5xx:sum) > 10)
  FOR 1m
  SUMMARY "{{$labels.origin}} 5xx error spike"
  DESCRIPTION "{{$labels.origin}} spike in 5xx exceptions."
  RUNBOOK ""

[shanemhansen]

I found I was accidentally running an old version of prometheus.

[lock]

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