In /var/log/secure every time a user logs in or logs out I notice the messages shown below stating Unregistered and Registered Authentication Agent. I have not been able to figure out why these messages keep occurring. Any help with understanding why these messages are occurring and/or if it is possible to fix them would be greatly appreciated.
Aug 25 09:00:40 TEST polkitd(authority=local): Unregistered Authentication Agent for session /org/freedesktop/ConsoleKit/Session18 (system bus name :1.4467, object path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.utf8) (disconnected from bus)
Aug 25 13:03:19 TEST polkitd(authority=local): Registered Authentication Agent for session /org/freedesktop/ConsoleKit/Session2 (system bus name :1.43 [/usr/libexec/polkit-gnome-authentication-agent-1], object path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.utf8)
3 Answers
Policykit is a system daemon and policykit authentication agent is used to verify identity of the user before executing actions. The messages logged in /var/log/secure show that an authentication agent is registered when user logs in and it gets unregistered when user logs out. These messages are harmless and can be safely ignored.
Different service trying to run on the same port
I encoutered similar error when running newly installed nginx. Turns out that port 80 is being used by apache. Updating the default port fixed the problem
local@machine:/$ sudo lsof -i -P -n | grep LISTEN local@machine:/$ sudo vim etc/nginx/default server { listen 86 default_server; listen [::]:86 default_server; ..... .. }
I found this problem too. Because the CentOS service depend on multi-user.target for none desktop CentOS 7.2. so I delete multi-user.target from my .service file. It had missed.
