Red Hat System Administration II
The
systemctl rebootandsystemctl poweroffcommands reboot and power down a system, respectively.The
systemctl isolatecommand switches to a new target at runtime.target-name.targetThe
systemctl get-defaultandsystemctl set-defaultcommands can query and set the default target.You can use the
rd.breakoption on the kernel command line to interrupt the boot process before control is handed over from theinitramfsimage. The root file system is mounted read-only under/sysroot.The emergency target can diagnose and fix file-system issues.
Lab Controls
Click CREATE to build all of the virtual machines needed for the classroom lab environment. This may take several minutes to complete. Once created the environment can then be stopped and restarted to pause your experience.
If you DELETE your lab, you will remove all of the virtual machines in your classroom and lose all of your progress.