Remove Selective Labels : Slack Alerts

[ABHAY VERMA]

Hi Team,

Is there a way we can drop selective label names when routing alerting to slack, pagerduty etc. In a way, I am trying to find some working examples of Remove func in alertmanager so that while iterating over a range of alert labels, I should be able to drop some pre-defined label names.

I am finding it difficult to dec a list a names and use it with Remove func. I was following this article - link . I am doing something like this to drop unnecessary labels - 

```                {{- range .Labels.SortedPairs -}}

                  {{- if (and (ne .Name "name1") (ne .Name "name2") ) -}}

                  • *{{- .Name }}:* `{{- .Value }}`

                  {{ end -}}

                {{- end -}}

              {{ end }}

```

Is there a better way to implement this using Remove func in alertmanager.

Thanks,

[Harald Koch]

The Go template 'eq' function has a special feature that lets you list multiple arguments, so you can change your if statement to:

    {{-if (eq .Name "name1" "name2" "name3" }}{{ else -}}

    • *{{- .Name }}:* `{{- .Value }}`

    {{ end -}}

As you add more exclusions this gets more concise and easier to read.

--

Harald

[ABHAY VERMA]

Thanks for the suggestion. This will actually help in maintaining clarity. 

But just out of curiosity can't the remove KV method of alert manager be used that returns a copy of key/value map without the given keys(selective labels to drop) as it takes list of keys to be removed and then we iterate over it to display the useful labels?