Cannot Login : System is booting up[edit]

If you get the following message when trying to log in:

System is booting up. See pam_nologin(8)

The quick fix is to remove the nologin file so that authentication will go through.

# cat /var/run/nologin
"System is booting up. See pam_nologin(8)"
# rm /var/run/nologin

I'm still trying to find a real solution to this issue though. Why is this file being made and why isn't it being removed?

There were no log entries when the file was created, but a few minutes before its creation, /var/log/messages had a bunch of these:

/var/log/messages-20170521:May 17 03:42:38 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:43:08 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:43:08 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:44:03 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:44:03 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:44:16 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:44:16 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:44:17 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:44:17 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration
/var/log/messages-20170521:May 17 03:44:21 mr1 dbus-daemon[1314]: [session uid=988 pid=1314] Reloaded configuration