My server is centos 7.4 with Apache 2.4.6.
Each time when I systemctl restart httpd,2 messages will added to /var/log/secure.Looks like :

Jan 19 8:23:48 localhost polkitd[493]: Registered Authentication Agent for unix-process:5739:174943 (system bus name :1.119 [/usr/bin/pkttyagent --notify-fd 5 --fallback], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8)
Jan 19 8:23:49 localhost polkitd[493]: Unregistered Authentication Agent for unix-process:5739:174943 (system bus name :1.119, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)

What's the problem?


I had to reboot the box to fix this.

I'm sure there's a better solution, but in absence of that... kick it all over.

  • 1
    @iwaseatenbyagrue For me, Apache would not start at all with this error, so I figured I would answer that a reboot fixed this for me. Since nobody else at all has even responsed to this question, please accept this admittedly small amount of value added minus the criticism. – Marcus Sep 27 '19 at 11:11

You can disable SELinux if systemwide security is non critical. Edit the config file found in /etc/selinux/ .Change status of SELINUX from enforcing to disabled. Save and reboot your server.

  • The mere suggestion could lead newcomers or other folks down the wrong path. This should at least come with a bigger, visible warning. – Yes Barry Jan 4 at 17:21

I got this message because of wrongly placed certificate and key files. Once I got these sorted with the apache config, apache started fine.

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