Working with calculated and dependent items

Calculated and dependent items are used in Zabbix to produce additional values from existing values. Sometimes, we have already collected a value and we need to do more with the values created by that item. We can do exactly that by using calculated and dependent items.

Getting ready

To work with calculated items and dependent items, we are going to need the Zabbix server and monitored hosts from the previous recipes. We will add the items on the lar-book-agent_passive host and our Zabbix server (or any MySQL server) host, so we already have some items available to calculate and make dependent.

How to do it…

Let's see how we can extend our items by getting started with the calculated items.

Working with calculated items

1. Let's navigate to our host configuration by going to Configuration | Hosts and clicking on our lar-book-agent_passive host's items. In the filter field named Name, enter memory...