Hands-On Software Engineering with Golang

Selectively muting alerts

Another handy Alertmanager feature that you should be aware of is alert inhibition. This feature allows the operator to mute notifications for a set of alerts when a specific alert is currently firing.

When the Alertmanager loads its configuration file, it looks for the list of alert inhibition rules under the top-level inhibit_rules key. Each rule entry must adhere to the following schema:

source_match:
  [ <labelname>: <labelvalue>, ... ]
source_match_re:
  [ <labelname>: <regex>, ... ]

target_match:
  [ <labelname>: <labelvalue>, ... ]
target_match_re:
  [ <labelname>: <regex>, ... ]

[ equal: '[' <labelname>, ... ']' ]

The source_match and source_match_re blocks work as selectors for the alert that activates the inhibition ...