manual:config:triggers

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manual:config:triggers [2014/09/26 11:28]
sasha Links adapted because of a move operation
manual:config:triggers [2021/05/12 07:29] (current)
martins-v more precise wording
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-===== - #3 Triggers =====+===== 3 Triggers =====
  
 === Overview === === Overview ===
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 ^VALUE ​ ^DESCRIPTION^ ^VALUE ​ ^DESCRIPTION^
-|OK     ​|This is a normal trigger state. ​Called FALSE in older Zabbix versions.+|OK       ​|This is a normal trigger state. ​ 
-|PROBLEM|Normally means that something happened. For example, the processor load is too high. Called TRUE in older Zabbix versions.|+|PROBLEM ​ |Normally means that something happened. For example, the processor load is too high.  |
  
 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. ​+Most trigger functions are evaluated based on [[:​manual/​config/​items/​history_and_trends|history]] data, while some trigger functions for long-term analytics, e.g. **trendavg()**,​ **trendcount()**,​ etc, use trend data. 
 + 
 +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 //history syncer// 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. ​
  
 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.