The Varnish plugin does not require any special configuration. You need to have the latest version of the Agent to use this plugin.

If you haven't yet read Add FortiMonitor Agent checks, start there.

Control Panel Configuration

First select Varnish from the monitoring catalog.

There are a number of available metrics to monitor.

If you would like to inspect the process name plugin in more detail you can find the python script for it in /usr/lib/panopta-agent/plugins/varnish.py.