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Create and edit message templates

You can use message templates to customize notification messages for the contact point types.

Create a message template:

To create a message template, complete the following steps.

  1. In the Grafana menu, click the Alerting (bell) icon to open the Alerting page listing existing alerts.
  2. In the Alerting page, click Contact points to open the page listing existing contact points.
  3. From Alertmanager drop-down, select an external Alertmanager to create and manage templates for the external data source. Otherwise, keep the default option of Grafana.
    Select Alertmanager
    Select Alertmanager
  4. Click Add template.
  5. In Name, add a descriptive name.
  6. In Content, add the content of the template.
  7. Click Save template button at the bottom of the page.

The define tag in the Content section assigns the template name. This tag is optional, and when omitted, the template name is derived from the Name field. When both are specified, it is a best practice to ensure that they are the same.

Edit a message template:

To edit a message template, complete the following steps.

  1. In the Alerting page, click Contact points to open the page listing existing contact points.
  2. In the Template table, find the template you want to edit, then click the Edit (pen icon).
  3. Make your changes, then click Save template.

Delete a message template:

To delete a message template, complete the following steps.

  1. In the Alerting page, click Contact points to open the page listing existing contact points.
  2. In the Template table, find the template you want to delete, then click the Delete (trash icon).
  3. In the confirmation dialog, click Yes, delete to delete the template.

Use caution when deleting a template since Grafana does not prevent you from deleting templates that are in use.

Create a custom template

Here’s an example of how to use a custom template. You can also use the default template included in the setup.

Step 1: Configure a template to render a single alert.

{{ define "myalert" }}
  [{{.Status}}] {{ .Labels.alertname }}

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

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

  {{ if gt (len .SilenceURL ) 0 }}
    Silence alert: {{ .SilenceURL }}
  {{ end }}
  {{ if gt (len .DashboardURL ) 0 }}
    Go to dashboard: {{ .DashboardURL }}
  {{ end }}
{{ end }}

Step 2: Configure a template to render entire notification message.

{{ define "mymessage" }}
  {{ if gt (len .Alerts.Firing) 0 }}
    {{ len .Alerts.Firing }} firing:
    {{ range .Alerts.Firing }} {{ template "myalert" .}} {{ end }}
  {{ end }}
  {{ if gt (len .Alerts.Resolved) 0 }}
    {{ len .Alerts.Resolved }} resolved:
    {{ range .Alerts.Resolved }} {{ template "myalert" .}} {{ end }}
  {{ end }}
{{ end }}

Step 3: Add mymessage in the notification message field.

Alert summary:
{{ template "mymessage" . }}

Template data

Template data is passed on to message templates as well as sent as payload to webhook pushes.

NameTypeNotes
ReceiverstringName of the contact point that the notification is being sent to.
Statusstringfiring if at least one alert is firing, otherwise resolved.
AlertsAlertList of alert objects that are included in this notification (see below).
GroupLabelsKeyValueLabels these alerts were grouped by.
CommonLabelsKeyValueLabels common to all the alerts included in this notification.
CommonAnnotationsKeyValueAnnotations common to all the alerts included in this notification.
ExternalURLstringBack link to the Grafana that sent the notification. If using external Alertmanager, back link to this Alertmanager.

The Alerts type exposes functions for filtering alerts:

  • Alerts.Firing returns a list of firing alerts.
  • Alerts.Resolved returns a list of resolved alerts.

Alert

NameTypeNotes
Statusstringfiring or resolved.
LabelsKeyValueA set of labels attached to the alert.
AnnotationsKeyValueA set of annotations attached to the alert.
StartsAttime.TimeTime the alert started firing.
EndsAttime.TimeOnly set if the end time of an alert is known. Otherwise set to a configurable timeout period from the time since the last alert was received.
GeneratorURLstringA back link to Grafana or external Alertmanager.
SilenceURLstringLink to grafana silence for with labels for this alert pre-filled. Only for Grafana managed alerts.
DashboardURLstringLink to grafana dashboard, if alert rule belongs to one. Only for Grafana managed alerts.
PanelURLstringLink to grafana dashboard panel, if alert rule belongs to one. Only for Grafana managed alerts.
FingerprintstringFingerprint that can be used to identify the alert.
ValueStringstringA string that contains the labels and value of each reduced expression in the alert.

KeyValue

KeyValue is a set of key/value string pairs that represent labels and annotations.

Here is an example containing two annotations:

{
  "summary": "alert summary",
  "description": "alert description"
}

In addition to direct access of data (labels and annotations) stored as KeyValue, there are also methods for sorting, removing and transforming.

NameArgumentsReturnsNotes
SortedPairsSorted list of key & value string pairs
Remove[]stringKeyValueReturns a copy of the Key/Value map without the given keys.
Names[]stringList of label names
Values[]stringList of label values