Hands-On Infrastructure Monitoring with Prometheus

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This is not a notifier per se, but a pattern commonly used to drop notifications. The way it's configured is by specifying a receiver without a notifier, which causes the notification to be dropped. The following example ensures that no notification will ever be sent:

global:route:  receiver: 'null'receivers:- name: 'null'

This is sometimes useful for demonstrative purposes, but not much else; alerts that aren't supposed to trigger notifications should be dropped at their source and not in Alertmanager, with the exception of alerts being used as source for inhibitions.

Something to always keep an eye on is the alertmanager_notifications_failed_total Alertmanager metric, as it tracks all the failed attempts to deliver notifications per ...