4 11:20:01 VM_0_13_centos systemd: Started Session 25759 of user root.
May 4 11:20:01 VM_0_13_centos systemd: Removed slice user-0.slice. May 4 11:21:01 VM_0_13_centos systemd: Created slice user-0.slice.执行下列操作,不见了
systemctl restart rsyslog systemd-analyze set-log-level notice