我最近几天开始运行 check_mk 来监控我的网络和服务器，并开始收到服务的严重服务错误user@1002。当我查看服务器上的日志时，我只能找到这些。下面列出的日期是它第一次出现的日期。直到 check_mk 通知我，我才注意到它。我不知道是什么原因造成的。我正在运行 Ubuntu Server 16.04.3。服务器似乎运行良好，但系统日志中充满了这些错误。
有任何想法吗？
谢谢
Jun 2 06:26:15 host systemd[1]: Created slice User Slice of username.
Jun 2 06:26:15 host systemd[1]: Started Session c23158 of user username.
Jun 2 06:26:15 host systemd[1]: Starting User Manager for UID 1002...
Jun 2 06:26:15 host systemd[2795]: Reached target Paths.
Jun 2 06:26:15 host systemd[2795]: Listening on REST API socket for snapd user session agent.
Jun 2 06:26:15 host systemd[2795]: Reached target Timers.
Jun 2 06:26:15 host systemd[2795]: Reached target Sockets.
Jun 2 06:26:15 host systemd[2795]: Reached target Basic System.
Jun 2 06:26:15 host systemd[2795]: Reached target Default.
Jun 2 06:26:15 host systemd[2795]: Startup finished in 17ms.
Jun 2 06:26:15 host systemd[1]: Started User Manager for UID 1002.
Jun 2 06:26:15 host systemd[1]: Stopping User Manager for UID 1002...
Jun 2 06:26:15 host systemd[2795]: Stopped target Default.
Jun 2 06:26:15 host systemd[2795]: Stopped target Basic System.
Jun 2 06:26:15 host systemd[2795]: Stopped target Sockets.
Jun 2 06:26:15 host systemd[2795]: Stopped target Timers.
Jun 2 06:26:15 host systemd[2795]: Closed REST API socket for snapd user session agent.
Jun 2 06:26:15 host systemd[2795]: Stopped target Paths.
Jun 2 06:26:15 host systemd[2795]: Reached target Shutdown.
Jun 2 06:26:15 host systemd[2795]: Starting Exit the Session...
Jun 2 06:26:15 host systemd[2795]: Received SIGRTMIN+24 from PID 2803 (kill).
Jun 2 06:26:15 host systemd[1]: Stopped User Manager for UID 1002.
journalctl -p debug -b输出：
Jun 09 16:21:15 host su[28998]: Successful su for username by root
Jun 09 16:21:15 host su[28998]: + ??? root:username
Jun 09 16:21:15 host su[28998]: pam_unix(su:session): session opened for user username by (uid=0)
Jun 09 16:21:15 host systemd[1]: Created slice User Slice of username.
Jun 09 16:21:15 host systemd-logind[1421]: New session c3016 of user username.
Jun 09 16:21:15 host systemd[1]: Started Session c3016 of user username.
Jun 09 16:21:15 host systemd[1]: Starting User Manager for UID 1002...
Jun 09 16:21:15 host systemd[29005]: pam_unix(systemd-user:session): session opened for user username by (uid=0)
Jun 09 16:21:15 host systemd[29005]: Listening on REST API socket for snapd user session agent.
Jun 09 16:21:15 host systemd[29005]: Reached target Sockets.
Jun 09 16:21:15 host systemd[29005]: Reached target Paths.
Jun 09 16:21:15 host systemd[29005]: Reached target Timers.
Jun 09 16:21:15 host systemd[29005]: Reached target Basic System.
Jun 09 16:21:15 host systemd[29005]: Reached target Default.
Jun 09 16:21:15 host systemd[29005]: Startup finished in 17ms.
Jun 09 16:21:15 host systemd[1]: Started User Manager for UID 1002.
Jun 09 16:21:15 host su[28998]: pam_unix(su:session): session closed for user username
Jun 09 16:21:15 host systemd-logind[1421]: Removed session c3016.
Jun 09 16:21:15 host systemd[1]: Stopping User Manager for UID 1002...
Jun 09 16:21:15 host systemd[29005]: Stopped target Default.
Jun 09 16:21:15 host systemd[29005]: Stopped target Basic System.
Jun 09 16:21:15 host systemd[29005]: Stopped target Timers.
Jun 09 16:21:15 host systemd[29005]: Stopped target Paths.
Jun 09 16:21:15 host systemd[29005]: Stopped target Sockets.
Jun 09 16:21:15 host systemd[29005]: Closed REST API socket for snapd user session agent.
Jun 09 16:21:15 host systemd[29005]: Reached target Shutdown.
Jun 09 16:21:15 host systemd[29005]: Starting Exit the Session...
Jun 09 16:21:15 host systemd[29005]: Received SIGRTMIN+24 from PID 29022 (kill).
Jun 09 16:21:15 host systemd[29009]: pam_unix(systemd-user:session): session closed for user username
Jun 09 16:21:15 host systemd[1]: Stopped User Manager for UID 1002.
Jun 09 16:21:15 host systemd[1]: Removed slice User Slice of username.