Zabbix 4 Network Monitoring - Third Edition

Constructing trigger expressions

So far, we have used only very simple trigger expressions, comparing the last value to a constant. Fortunately, that's not all that trigger expressions can do. We will now try to create a slightly more complex trigger.

Let's say we have two servers, A test host and Another host, providing a redundant SSH File Transfer Protocol (SFTP) service. We would be interested in any one of the services going down. Navigate to Configuration | Hosts, and click on Triggers next to Another host. Then, click on the Create trigger button. Enter the following values:

• Name: One SSH service is down.
• Expression: Click on the Add button. In the resulting popup, click on Select next to the Item field. Make sure Another host is ...