January 2019
Intermediate to advanced
798 pages
20h 33m
English
Content preview from Zabbix 4 Network Monitoring - Third Edition
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Event generation and recovery expression
Trigger events are generated whenever a trigger changes state. A trigger can be in one of the following states:
- OK: The normal state, when the trigger expression evaluates to false
- PROBLEM: A problem state, when the trigger expression evaluates to true
- UNKNOWN: A state when Zabbix cannot evaluate the trigger expression, usually when there is missing data
Refer to Chapter 20, Zabbix Maintenance, for information on how to get notifications about triggers becoming UNKNOWN.
No matter whether a trigger goes from OK to PROBLEM, UNKNOWN, or any other state, an event is generated.
There is also a way to customize this with the PROBLEM events generation mode multiple option in the trigger properties. We will ...
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