Monitor2 since its upgrade to Ubuntu 20.04 now uses version 3/4 NRPE packets but old 18.04 servers only support version 2. We could use the metadata from netbox to set the -2 flag on check_nrpe when we know the server we are talking to is Ubuntu 18.04 or lower (or whatever zepler.sown.org.uk is running).
Monitor2 since its upgrade to Ubuntu 20.04 now uses version 3/4 NRPE packets but old 18.04 servers only support version 2. We could use the metadata from netbox to set the -2 flag on check_nrpe when we know the server we are talking to is Ubuntu 18.04 or lower (or whatever zepler.sown.org.uk is running).