Managing the Boot Process on RHEL 8

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30 minutes
  • 3 Learning Objectives

About this Hands-on Lab

The boot process is the genesis of a running Linux system. In this hands-on lab, we will examine the boot process on a RHEL 8 system. We will boot, reboot, and shut down a system normally, as well as boot systems into different targets manually.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Work with `systemctl` System State Commands
  1. Investigate the systemctl options for power management.
  2. Look up the options for shutdown messages.
  3. Test out a shutdown and reboot with a shutdown message.
Query and Set the Default Target of a System
  1. Query the default target of the system.
  2. Change the default target.
  3. Reboot and query the new default target.
Work with the Traditional System State Commands
  1. Investigate the particulars of the power management utilities.
  2. View the man pages for explanations of what they do.
  3. Reboot the system using the utilities.

Additional Resources

In this lab, you'll be working as a systems admin, who needs to know more about the various options for managing your system's rebooting, halting, and other system states.

You'll look into both the options available through systemctl, including how to test options without a reboot, and how to send the all-important warning message to logged-in users

Next, you'll query and set the system's default target, and reboot the system to verify that the right things happened.

Red Hat Exam Requirements Covered:

  • Boot, reboot, and shut down a system normally
  • Boot systems into different targets manually
  • Interrupt the boot process in order to gain access to a system

Note: We are unable to have any lab steps that address the last item, where we would be interrupting the boot process and gaining access to the system, the AWS access methods and interface don't make that feasible for implementing in a lab situation.

Please view the lesson in the RHCSA course about this, you can easily set that up in a Playground Server and get that practice.

What are Hands-on Labs

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

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