linux系统日志中出现大量systemd Starting Session ### of user root 解决

这种情况是正常的，不算是一个问题

https://access.redhat.com/solutions/1564823

Environment

• Red Hat Enterprise Linux 7

Issue

• On my RHEL7 newely installed system I am seeing the following in /var/log/messages all the time

  Jul 24 08:50:01 example.com systemd: Created slice user-0.slice.
  Jul 24 08:50:01 example.com systemd: Starting Session 150 of user root.
  Jul 24 08:50:01 example.com systemd: Started Session 150 of user root.
  Jul 24 09:00:01 example.com systemd: Created slice user-0.slice.
  Jul 24 09:00:02 example.com systemd: Starting Session 151 of user root.
  Jul 24 09:00:02 example.com systemd: Started Session 151 of user root.
  

Resolution

• These messages are normal and expected -- they will be seen any time a user logs in

• To suppress these log entries in /var/log/messages, create a discard filter with rsyslog, e.g., run the following command:

  echo 'if $programname == "systemd" and ($msg contains "Starting Session" or $msg contains "Started Session" or $msg contains "Created slice" or $msg contains "Starting user-" or $msg contains "Starting User Slice of" or $msg contains "Removed session" or $msg contains "Removed slice User Slice of" or $msg contains "Stopping User Slice of") then stop' >/etc/rsyslog.d/ignore-systemd-session-slice.conf
  
  

  Then restart the rsyslog service

  systemctl restart rsyslog