Alert message template

Grafana Alerting
1

I want to configure the notification message of an alert. I have a query that returns an error type, if there’s an error the alert message should say the error type in the same way a value mapping in Grafana translates numbers to text following this rule

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When configuring the alert rule, the raw value of this variables is given by this {{$values.B}} which works correctly. Reading about the templating language syntax, I thought of using this

{{ if (eq $values.B 1) -}}
  OverTemperature
{{ else if (eq $values.B 2) -}}
  ThermocoupleFail
{{ else if (eq $values.B 3) -}}
  NoFlame
{{ else if (eq $values.B 4) -}}
  GasWhileDrying
{{ else if (eq $values.B 5) -}}
  GasNoAir
{{ else if (eq $values.B 6) -}}
  GasNotFiring
{{ else -}}
  None
{{- end }}

Adding this code on the notification description or in a label doesn’t work. Instead I see raw template code in the notification when an alarm is triggered. I am going a bit crazy over this and already checked out the docs Alerting template language | Grafana documentation

Ultimately I’d like to have a concise alarm notification, specially when using the oncall integration. This is what I get at the moment and is full of clutter

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Any advice or resources to help me achieve this are greatly appreciated!
Thanks.

2

Hi,

try using 1.0, 2.0, etc instead of 1, 2. Worked for me in a similar case, though I’m not sure why :smile:

3

I am using Grafana cloud…

4

Yeah, but alert rule template is still configured by you? Instead of

{{ if (eq $values.B 1) -}}

use

{{ if (eq $values.B 1.0) -}}

5

Yes the alert rule is still configured by me. I don’t know why I thought you meant to change Grafana version, but now I understand you.

I tried using 1.0 instead, but still it’s not working. I even added this test label just to see if grafana templating language works correctly:

Test = {{ if (eq 0 0) -}} Working {{- end }}

And it does work. I even simplified the whole alert rule template, but as can be seen in the screenshot, it’s like the templating language can’t do a comparison with the referenced value $values.B

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Raw error = {{$values.B}} does convert properly to Raw error = 0, but using the conditional {{ if (eq 0.0 $values.B) -}} doesn’t work correctly. This is confusing

6

I think you should also use $values.B.value or $values.B.Value (probably the latter one)

7

Thank you so much, using $values.B.Value worked!