Enabling debug mode requires restarting RADIUS.

1. Enable the FreeRADIUS control-socket:

   ln -s /etc/raddb/sites-available/control-socket /etc/raddb/sites-enabled/

   This module allows the RAdmin administration tool to work.

   1. Configure RAdmin write permissions in /etc/raddb/sites-available/control-socket:

      mode = rw

      Possible values:

      • ro = read-only access (default)
      • rw = read and write access
   2. Verify that the module is added to the main config:

      ls -la /etc/raddb/sites-enabled/

2. Restart radiusd:

   systemctl restart radiusd

1. Open RAdmin:

   radmin

   1. Logging is written to the directory defined in /etc/raddb/radiusd.conf, by default it is radius.log
   2. Enable debug mode

      debug level 4

      The logging verbosity can be set from 0 (disable logging) to 4 (debug mode, similar to radiusd -X).
      Important! Even with logging level 1, debug mode generates a large number of logs, so it is not recommended to keep logging enabled for a long time to avoid filling system storage.

   3. Select a file for writing logs:

      debug file [filename]

      Commands must be entered sequentially; they cannot be used simultaneously as in: debug level 3 debug file [filename]

2. If an error occurs after restarting radiusd or when attempting to connect to RAdmin — check whether the socket /var/run/radiusd/radiusd.sock exists and what permissions are assigned to it.
   If there are no access permissions (default is radiusd) — change the gid and uid parameters to "root" in /etc/raddb/sites-available/control-socket.
   • uid — the user name allowed to connect to the control socket.
   • gid — the group name allowed to connect to the control socket.