Tips & tricks

In Zabbix, simple checks are done by the Zabbix Server or Proxy on the default agent IP address, usually the internal one. If you would like to monitor some services like SSH or SMTP using the external IP address, simply add another Agent Interface with the external IP. Then choose the external interface in the item configuration:

In order to get TeamViewer running smoothly (without lag, or simply cannot install) when no monitors are connected, you need to emulate one. This is done by creating (or editing) this file : /usr/share/X11/xorg.conf.d/xorg.conf And add the following content : Section "Device" Identifier "Configured Video Device" Driver "dummy" EndSection Section "Monitor" Identifier "Configured Monitor" HorizSync 31.5-48.5 VertRefresh 50-70 EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1024x800" EndSubSection EndSection Reboot the computer #1