prometheus / prometheus/alertmanager

Auto expire silences that don't match anything for N period

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#5,459 4 comments 0 reactions 0 assignees View on GitHub

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component/silences
Dominant language
Go
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Avg merge
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Merged PRs (30d)
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Description

Proposal

Scenario: you silence something, the silence works as expected, then the alert is resolved.
Now silence matches nothing, but still stays

Suggestion: when you create a silence - there is a duration property, that specifies: "If a silence hasn't been matching anything for duration of N - auto-expire it".

This would greatly help in managing silences overall.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names no files, tests, or entry points. Start by locating silence creation, duration handling, and matching lifecycle code, then clarify how an inactivity period should be represented and evaluated; done means an unmatched silence expires after the configured period without affecting matching silences.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
observability
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
35/100

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