Do you use sudo for automated tasks? For instance to let the Zabbix agent access privileged information? Then your auth.log may look a bit flooded, like this:
zabbix sudo logging
Here, an awesome shell one-liner to find which process uses the most files, relative to its max-open-files soft limit.
zabbix monitoring linux
Today, my choice of Python modules to Interface with Zabbix. They are all pretty similar, so that made it harder to choose.
python zabbix api
When you're monitoring security update availability using Zabbix or some other monitoring tool, you'll need a method to discern regular updates from security updates.
zabbix ubuntu monitoring updates debian