Zabbix 4 Network Monitoring - Third Edition

Cache usage

We've already discussed several caches in Zabbix and what they're used for. As these caches fill up, it can have different effects on Zabbix. Let's take a look at how we can monitor how much of some of those caches is free or used.

We could monitor the free space in the first cache we found out about, the configuration cache:

1. Let's go to Configuration | Hosts, then click on Items next to A test host, and click on Create item. Fill in the following values:

• • Name: Zabbix configuration cache, % free
  • Type: Zabbix internal
  • Key: zabbix[rcache,buffer,pfree]
  • Type of information: Numeric (float)
  • Units: %

2. When done, click on the Add button at the bottom.

For this item key, we used the rcache keyword, which stands for read cache ...