silenceForm required labels

[itatabitovski]

I was not able to find something like this in the configuration.

It would be very useful to be able to select required labels that must be filled in when adding a silence (e.g. team).

Something like:

silenceForm:
  required:
    - name:
      value: 
      value_re:

[prymitive]

You could potentially use ACLs for that:

  - action: requireMatcher
    reason: db users must pass team=db
    scope:
      groups:
        - db
    matchers:
      required:
        - name: team
          value: db

[itatabitovski]

I have the following ACL, but even if i specify the label team karma prevents adding the silence.

rules:
  - action: requireMatcher
    reason: must specify label team
    matchers:
      required:
        - name: team
          value: .+
          isRegex: true

DEBU[0028] [dev] Proxy request /proxy/alertmanager/dev/api/v2/silences
DEBU[0028] ACL 0: isAllowed=false err=silence blocked by ACL rule: must specify label team
WARN[0028] [dev] proxy request 'POST /proxy/alertmanager/dev/api/v2/silences' was blocked by ACL rule: silence blocked by ACL rule: must specify label team

[prymitive]

Right, that's because value is the exact value that's required in the matcher, not a regex rule to match value against.
I need look into it to refresh my memory, but might just add name_re and value_re to the matchers:required to allow regexes there.

[prymitive]

https://github.com/prymitive/karma/blob/master/docs/ACLs.md#require-everyone-to-always-specify-team-matcher-in-silences

[github-actions]

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