02-23-2015
Problems with kernel patches
Three RH7 servers patched through a satellite and rebooted Sunday. Two of the three experienced issues with kernel 123.20.1 and were reporting logind and systemd errors, org.freedesktop subscription failure. Users ssh'ing into the two servers had to wait 30 seconds to get the password prompt. Cosign (an Apache mod that allows the use of a remote authentication machine) failed. The third machine was fine, no errors, no problems.
I rolled the two back to 123.13.2 and all of the problems went away. Unfortunately, searching for this on the Internet only brings up similar things from several years ago...nothing current.
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LEARN ABOUT POSIX
systemd-logind
SYSTEMD-LOGIND.SERVICE(8) systemd-logind.service SYSTEMD-LOGIND.SERVICE(8)
NAME
systemd-logind.service, systemd-logind - Login manager
SYNOPSIS
systemd-logind.service
/lib/systemd/systemd-logind
DESCRIPTION
systemd-logind is a system service that manages user logins. It is responsible for:
o Keeping track of users and sessions, their processes and their idle state. This is implemented by allocating a systemd slice unit for
each user below user.slice, and a scope unit below it for each concurrent session of a user. Also, a per-user service manager is
started as system service instance of user@.service for each logged in user.
o Generating and managing session IDs. If auditing is available and an audit session ID is already set for a session, then this ID is
reused as the session ID. Otherwise, an independent session counter is used.
o Providing PolicyKit-based access for users for operations such as system shutdown or sleep
o Implementing a shutdown/sleep inhibition logic for applications
o Handling of power/sleep hardware keys
o Multi-seat management
o Session switch management
o Device access management for users
o Automatic spawning of text logins (gettys) on virtual console activation and user runtime directory management
User sessions are registered with logind via the pam_systemd(8) PAM module.
See logind.conf(5) for information about the configuration of this service.
See sd-login(3) for information about the basic concepts of logind such as users, sessions and seats.
See the logind D-Bus API Documentation[1] for information about the APIs systemd-logind provides.
For more information on the inhibition logic see the Inhibitor Lock Developer Documentation[2].
SEE ALSO
systemd(1), systemd-user-sessions.service(8), loginctl(1), logind.conf(5), pam_systemd(8) sd-login(3)
NOTES
1. logind D-Bus API Documentation
https://www.freedesktop.org/wiki/Software/systemd/logind
2. Inhibitor Lock Developer Documentation
https://www.freedesktop.org/wiki/Software/systemd/inhibit
systemd 237 SYSTEMD-LOGIND.SERVICE(8)