Failed to create session: Connection timed out

General Discussion
1

Hello,
i have a lot of SLES 12SP5 and SP4 Servers, they get all few days the same error message.

Message:
Dec 02 00:01:01host-A cron[25325]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 02 00:01:26 host-A cron[25325]: pam_systemd(crond:session): Failed to create session: Connection timed out
Dec 02 00:05:50 host-A CRON[25325]: pam_unix(crond:session): session closed for user root

Dec 02 12:25:01 host-B cron[6867]: pam_unix(crond:session): session opened for user root by (uid=0)
Dec 02 12:25:26 host-B cron[6867]: pam_systemd(crond:session): Failed to create session: Connection timed out
Dec 02 12:25:26 host-B CRON[6871]: (root) CMD (/bin/sh /root/countstreams.sh >/dev/null 2>&1)
Dec 02 12:25:26 host-B CRON[6867]: pam_unix(crond:session): session closed for user root
…
Dec 02 12:26:27 host-B systemd[1]: Created slice User Slice of root.
Dec 02 12:26:27 host-B systemd[1]: Starting User Manager for UID 0…
Dec 02 12:26:27 host-B systemd[1]: session-50113.scope: Failed to add PIDs to scope’s control group: No such process
Dec 02 12:26:27 host-B systemd[1]: Failed to start Session 50113 of user root.
Dec 02 12:26:27 host-B systemd[1]: session-50113.scope: Unit entered failed state.

All other Server with SP3 has no Problems.

i have no idea what could it be.

Thank’s in advance!

2

@locky Hi and welcome to the Forum :slight_smile:
By the look of that output, some failing cron job on host-B, suggest inspect the crontab and the scripts running. Maybe environment variables not set? Or perhaps expect is running and not getting input so it times out.

3

Thank for you response.
and which environment can it be?
It may be, but I checked that no Cronjobs are installed on this host for any user.
Maybe a System Cronjob, bat i cant find no one Job for this Time range, about 12h or larger.
i have been observing this phenomenon since upgrade to SP4.

4

@locky The cron job knows nothing of the shell environment variables, eg $PATH so if your running a script for say the echo command it won’t work if PATH is not set first, or you use the full path eg /usr/bin/echo.
So no user cron jobs, then as root user run crontab -l or the files/directories ls /etc/cron*. It could also be a systemd timer, or do you have a remote user/probe hitting the box?