### Updating Distro file ###

sudo mv /usr/bin/distro /usr/bin/distro.old

sudo curl -o /usr/bin/distro https://raw.githubusercontent.com/librenms/librenms-agent/master/snmp/distro

sudo chmod +x /usr/bin/distro

sudo systemctl restart snmpd

Ref

https://docs.librenms.org/Extensions/Agent-Setup/#linux-bsd

https://raymii.org/s/tutorials/Service_checks_in_LibreNMS_nagios_plugins.html

https://docs.librenms.org/Extensions/Services/#debug