Hi [root@localhost ~]# systemctl restart radiusd.service Job for radiusd.service failed because the control process exited with error code. See "systemctl status radiusd.service" and "journalctl -xe" for details. [root@localhost ~]# systemctl status radiusd.service ● radiusd.service - FreeRADIUS high performance RADIUS server. Loaded: loaded (/usr/lib/systemd/system/radiusd.service; enabled; vendor preset: disabled) Active: failed (Result: exit-code) since Tue 2019-04-02 19:11:34 +08; 23s ago Process: 6622 ExecStartPre=/usr/sbin/radiusd -C (code=exited, status=1/FAILURE) Process: 6621 ExecStartPre=/bin/chown -R radiusd.radiusd /var/run/radiusd (code=exited, status=0/SUCCESS) Apr 02 19:11:34 localhost.localdomain systemd[1]: Starting FreeRADIUS high perform.... Apr 02 19:11:34 localhost.localdomain systemd[1]: radiusd.service: control process...1 Apr 02 19:11:34 localhost.localdomain systemd[1]: Failed to start FreeRADIUS high .... Apr 02 19:11:34 localhost.localdomain systemd[1]: Unit radiusd.service entered fai.... Apr 02 19:11:34 localhost.localdomain systemd[1]: radiusd.service failed. Hint: Some lines were ellipsized, use -l to show in full. [root@localhost ~]#