Send single message per alert

[pinowthebird]

• What Grafana version and what operating system are you using?
  v8.4.1 hosted on Kubernetes

• What are you trying to achieve?
  Send a single alert for each alert (state change).

• How are you trying to achieve it?
  Added a template, called SingleAlertContent :

{{ define "SingleAlertContent" }}
  Value: {{ or .ValueString "[no value]" }}

  Labels:
  {{ range .Labels.SortedPairs }}
    {{ .Name }}: {{ .Value }}
  {{ end }}

  {{ if gt (len .Annotations) 0 }}
  Annotations:
  {{ range .Annotations.SortedPairs }}
    {{ .Name }}: {{ .Value }}
  {{ end }}
  {{ end }}

  {{ if gt (len .DashboardURL ) 0 }}
    Go to dashboard: {{ .DashboardURL }}
  {{ end }}
  {{ if gt (len .PanelURL) 0 }}
    Panel: {{ .PanelURL }}
  {{ end }}
{{ end }}

Added another template, called SingleAlertTitle:

{{ define "SingleAlertTitle" }}
  [{{ .Status | toUpper }}] {{ .Labels.alertname }} {{ if gt (len .Alerts.Firing) 0 }}firing:{{ .Alerts.Firing | len }}{{ end }}
{{ end }}

Used the templates in my default, Slack, contact point:

• Title: {{ template “SingleAlertTitle” . }}
• Text Body: {{ template “SingleAlertContent” . }}

Fired a test notification from within the contact point.

• What happened?
  A Slack message was sent with only the state [FIRING] (from the title) in it.
  
  This is what the same test notification looks like, without the templates:
  

  

• What did you expect to happen?
  Get a Slack message that contains the details for the single alert.
  The actual goal is to get a single message for each alert, like we did before in Grafana v7.
  The templates in the snippets above, or just an attempt to achieve this.

• Can you copy/paste the configuration(s) that you are having problems with?

• Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.

• Did you follow any online instructions? If so, what is the URL?

[pinowthebird]

Bump

(not sure if this is allowed, but I’m really stuck here… )

[mariachini]

Try to use {{ .CommonLabels.alertname }} instead of {{ .Labels.alertname }}.