Systemctl/isolate

root@cloud ~ # systemctl isolate
ctrl-alt-del.target         graphical.target            initrd.target               reboot.target               runlevel1.target            runlevel5.target            system-update.target
default.target              halt.target                 kexec.target                rescue-ssh.target           runlevel2.target            runlevel6.target
emergency.target            initrd-switch-root.service  multi-user.target           rescue.target               runlevel3.target            soft-reboot.target
exit.target                 initrd-switch-root.target   poweroff.target             runlevel0.target            runlevel4.target            storage-target-mode.target