FreeRadius on Ubuntu 18.04 – Service not starting!

Many people online are asking why the FreeRadius service isn’t starting on Ubuntu 14.04/16.04/18.04 and for some it’s just because the following directory is missing:

/tmp/radiusd

The solution at this time is the following:

Create the following file …

nano /etc/tmpfiles.d/radius.conf

… with the following content …

d /tmp/radiusd 0700 freerad freerad – –

… save and exit, then execute the following command …

systemd-tmpfiles –create

… reboot.

A bug report has been submitted here: https://bugs.launchpad.net/ubuntu/+source/freeradius/+bug/1850927