amtool silence add --duration 2h --comment 'maintenance' --author alice
Create a silence for a fixed duration
Suppresses alert notifications for the given duration, here two hours, until it expires on its own. You must also pass label matchers to select which alerts are silenced, for example alertname=HighCPU. The --comment and --author fields are required by default and show up in the Alertmanager UI.
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