manual:config:triggers
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manual:config:triggers [2014/09/25 14:42] sasha Page moved from 2.4:manual:config:triggers to manual:config:triggers |
manual:config:triggers [2019/02/11 06:59] (current) martins-v triggers are evaluated based on history only |
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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. | ||
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| + | Triggers are evaluated based on [[:manual/config/items/history_and_trends|history]] data only; trend data are never considered. | ||
| 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. | 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. | ||
| - | You can [[:2.4/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. |