Grafana alerts and Go templating

Grafana Alerting
1

Hello!

I’m using Grafana version 9.2.8 with PagerDuty integration. I got basic alerting working but as a next step I wanted to have more control over the summary and title of alerts that Grafana sends out to PagerDuty. I have looked at several documentation about how to use Go templating and Go language in alert summary fields but for me the Go code never is parsed.

Illustration:
My alert is firing with this variable info:
[ var=‘B0’ metric=‘event_streamer.mean’ labels={} value=35614.5 ]

According to documentation I should be able to access this data in Summary field (the Alert Rule annotation fields) in Alert Rules Edit Page
Event Streamer {{ $values.B.metric }} duration is over 20 seconds: {{ $values.B.value }} ms.

But I get a “no value” text in place of the actual values.

What am I doing wrong?

2

Hello,

try this:

Event Streamer {{ $values.B.Labels.metric }} duration is over 20 seconds: {{ $values.B }} ms.

Where “B” is the name of the query.

3

Unfortunately the same effect: the variables are replaced with “no value” string.

4

Change B with B0.

If it doesnt work, check this: How To Use Alert Message Templates in Grafana - #3 by melori.arellano

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To refer to labels and values from the query add a new annotation to the alert like this. Name the annotation AlertValues.

{{ with $values }}
{{ range $k, $v := . }}
Location: {{$v.Labels.location}}
Variable: {{$v.Labels.variable}}
Alerting value: {{ $v }}
{{ end }}
{{ end }}