From http://docs.cacti.net/plugin:realtime
To install
- Have a working cacti install
- Install the deb (it relies on cacti, tested on ubuntu 16.04)
- Go to console/plugin management
- Hit the down arrow (install) next to the "Realtime" plugin, then hit the Green Enable arrow to enable it
- Go to Console/Settings, the Misc Tab, and where it says Cache Directory enter /var/tmp/cacti-realtime and save