Zabbix Documentation 4.0

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manual:config:triggers

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manual:config:triggers [2016/09/28 07:26]
127.0.0.1 external edit
manual:config:triggers [2019/11/14 12:58] (current)
viktors.tjarve [Overview] Updated info about time-based functions
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-===== - #3 Triggers =====+===== 3 Triggers =====
  
 === Overview === === Overview ===
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 Trigger status (the expression) is recalculated every time Zabbix server receives a new value that is part of the expression. ​ Trigger status (the expression) is recalculated every time Zabbix server receives a new value that is part of the expression. ​
  
-If time-based functions (**nodata()**,​ **date()**, **dayofmonth()**,​ **dayofweek()**,​ **time()**, **now()**) are used in the expression, the trigger is recalculated every 30 seconds by a Zabbix //timer// process. If both time-based and non-time-based functions are used in an expression, it is recalculated when a new value is received **and** every 30 seconds+Triggers are evaluated based on [[:​manual/​config/​items/​history_and_trends|history]] data only; trend data are never considered. 
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 +If time-based functions (**nodata()**,​ **date()**, **dayofmonth()**,​ **dayofweek()**,​ **time()**, **now()**) are used in the expression, the trigger is recalculated ​also every 30 seconds by a Zabbix //history syncer// process.
  
 You can [[manual:​config:​triggers:​expression|build trigger expressions]] with different degrees of complexity. You can [[manual:​config:​triggers:​expression|build trigger expressions]] with different degrees of complexity.