title: Radius server failed to start in centos 7
body: <p>At beginning I successfully configured radius server with mariadb and httpd. But I changed to hostname of the server and rebooted. Now even if the mariadb and httpd is running but radiusd failed to start. Here is the answer from journalctl -xe .. Please help me. </p>
  
  <pre><code>Jan 10 12:34:08 cpe.twcny.res.rr.com systemd[1]: Unit radiusd.service entered failed state.
  Jan 10 12:34:08 cpe.twcny.res.rr.com systemd[1]: radiusd.service failed.
  Jan 10 12:34:08 cpe.twcny.res.rr.com polkitd[963]: Unregistered Authentication Agent for unix-process:2183:15540 (system bus name :1.43, object path /org/
  Jan 10 12:40:01 cpe.twcny.res.rr.com systemd[1]: Created slice User Slice of root.
  </code></pre>