Simple questions - How to get value of Summary or Description annotations from alert in a template?

Grafana Alerting
1

No iteration just plain value of a key name I know.

This is how alert looks
1678236586

What do I put in to template to so the notifications shows Hello or Hi?

1678236846

2

In Slack? This should work:

{{ define "slack.body" }}
*Description*: {{ .Annotations.description }}
*Summary*: {{ .Annotations.summary }}
{{ end }}
3

Hi! You’ll need to iterate over the alerts before you can print the annotations as the data in notification templates is a list of alerts rather than a single alert. You can find more information in the documentation here Customize notifications | Grafana documentation.

1 Like
4

Webhook for ntfy, but also tested email regularly
Unfortunately {{ .Annotations.summary }} does not work. Tried adding value at the end too, tried under .alerts, tried playing with $, tried commonAnnotations too… I think I spent few hours now on this but no luck.

With ntfy webhook the message send is raw, so I Actually see the json structure with the values.

But I seem to cant use anything from them. Not in template, not from contact point message and title input boxes. I either get blank or .

To test I mostly use TEST button in contact point, with custom filled summary, but also do test by actually forcing grafana alerts.
The values are there, I see them in json, I see them with default template, I just cant grab them and have them in message or title…

Ive seen those examples, I assumed they go that way because they are unsure about the range of data they could have, not as requirement for everything.

I also assumed that the dot in golang template serves as kinda an iterator of a current structure level without the need to write loops… but I will try to go this way some more.

5

Ok. figured it out. Funny how trivial things are once you know. This video was one where it finally clicked, but I could have noticed that dot sooner elsewhere.

So, what I did wrong is how I called the template in the contact point Message/Title section.

  • the bad
    {{ template "test" }}
  • the good
    {{ template "test" . }}

The template itself:

{{ define "test" }}
   {{ .CommonAnnotations.summary }}
{{ end }}

One can skip template and just write {{ .CommonAnnotations.summary }} directly in to title or message of the contact point if thats all thats needed.

Iteration over alerts I tested too, plucking values out of arrays/lists with template like this:

{{ define "test" }}
  {{ range .Alerts}}
    {{ .Labels.whatever }}
    {{ .Labels.alertname }}
    {{ .Labels.instance }}
    {{ .Annotations.summary }}
  {{ end }}
{{ end }}

Capital letters required.

1 Like