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Dependent Items

Video Lecture

Dependent Items Dependent Items Dependent Items

Description

In this video I expand the log file monitoring item from the last video, into 1 master item that returns the whole log line, and then create several dependent items from the specific data contained in the log line.

Creating dependent items means that the agent doesn't need to run possibly identical queries on a host many times in order to extract parts of a value. The master item runs once on the host, and then the Zabbix server (or Zabbix proxy if host managed by proxy) updates the dependent items each time the master item gets its new values.

I also convert the new items into a template, create a graph and screen consisting of the graph created from the dependant item plus tables also showing values from the dependant items.

Dependent items

Item value preprocessing