2014-02-05 15:53:22 +01:00
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## <a id="event-handlers"></a> Event Handlers
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2013-10-10 11:22:32 +02:00
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2013-10-18 20:05:08 +02:00
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Event handlers are defined as `EventCommand` objects in Icinga 2.
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2014-04-04 18:57:23 +02:00
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Unlike notifications event commands are called on every host/service state change
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2013-10-18 20:05:08 +02:00
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if defined. Therefore the `EventCommand` object should define a command line
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evaluating the current service state and other service runtime attributes
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available through runtime macros. Runtime macros such as `$SERVICESTATETYPE$`
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and `$SERVICESTATE$` will be processed by Icinga 2 helping on fine-granular
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events being triggered.
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Common use case scenarios are a failing HTTP check requiring an immediate
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2014-03-09 22:30:56 +01:00
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restart via event command, or if an application is locked and requires
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a restart upon detection.
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