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docs: improve helper test for For

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bergquist committed 2018-11-08 14:16:58 +01:00
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docs/sources/alerting/rules.md
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@@ -52,7 +52,7 @@ Here you can specify the name of the alert rule and how often the scheduler shou
> This setting is available in Grafana 5.4 and above.
The `For` setting allows you to specify a duration for which the alert has to violate the threshold before switching to `Alerting` state and sending notifications. This is useful when you want to reduce the amount of false positive alerts and problems from which the system selfheal. Which in case a human does not need to be woken up.
If an alert rule has a configured `For` and the query violates the configured threshold it will first go from `OK` to `Pending`. Going from `OK` to `Pending` Grafana will not send any notifications. Once the alert rule has been firing for more than `For` duration, it will change to `Alerting` and send alert notifications.
Typically, it's always a good idea to use this setting since its often worse to get false positive than wait a few minutes before the alert notification triggers.