We’ve had a number of customer requests for new Nagios XI wizards that make it easy to monitor Linux/Unix machines either by SSH (using check_by_ssh) or NRPE. This is often useful in environments where Nagios admins have already installed the Nagios plugins and/or NRPE on machine in order to monitor them with Nagios Core.
And lest I forget, we also had a great community member (thanks Joshua!) document and test instructions on monitoring AIX over NRPE. We worked with Joshua to develop the NRPE wizard in a way that would work with his AIX/NRPE setup. BTW: Would you believe using Nagios to monitor AIX could save $300k+ on Tivoli licenses? 🙂