> > The reason for this is that NRPE_OPTS is used in "/etc/systemd/system/multi-user.target.wants/nagios-nrpe-server.service" but is commented out in "/etc/default/nagios-nrpe-server".
> This is very common for default files, which we're unlikely to change to please systemd.
The fix is as simple as adding NRPE_OPTS="" to the top of the file...
