I'm looking for a solution to monitor a few servers in a quite unique configuration, using Nagios:
There are 5 hosts that need to be monitored.
All of the hosts can communicate between themselves, but only one of them (let's call it the proxy host)
is accessible by Nagios.
Basically what I need is a way to monitor these hosts by using the "proxy host" (the one that is accessible by Nagios).
I've read about passive checks, but I didn't find a way to implement it for this scenario.
Any help will be appreciated.