Why do I get a notification for each firing alert, instead of a summary-notification?

Grafana Alerting
1

System:

  • Grafana 9.2.0
  • runs on Ubuntu 20.04

Question:

I am new to notification templating. I would like to setup a notification template that sends a summary notification (see code below for my current state of the template). I added this template under Text Body in the settings of the contact point.

The problem that I am facing is that I get a notification for each alert (which then read “1 firing:” and the Name, Summary, and Annotations). But instead I want a summary notification with all alerts that are firing.

How do I configure this?

Here is the code of my notification template (very much work in progress):

{{ if gt (len .Alerts.Firing) 0 }}
  {{ len .Alerts.Firing }} firing:
    {{ range .Alerts.Firing -}}
    *Name*: {{ .Labels.alertname }}
    *Summary*: {{ .Annotations.summary }} 
    {{ if gt (len .Annotations) 0 -}}
    *Annotations*:
        {{ range .Annotations.SortedPairs -}}
        - {{ .Name }}: {{ .Value }}
        {{ end }}
    {{ end }}
    {{ end }} 
{{ end }} 
{{ if gt (len .Alerts.Resolved) 0 }} 
  {{ len .Alerts.Resolved }} resolved: 
    {{ range .Alerts.Resolved }} 
    {{ .Annotations.summary }} 
    {{ end }} 
{{ end }}
2