Visualizing systemd Startups

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15 minutes
  • 4 Learning Objectives

About this Hands-on Lab

Understanding what happens when a `systemd` system boots up and is running is essential to being able to use it properly and manage it.

In this lab, we’ll show you how to use the included tools to see your `systemd` startup sequences, both command line and also as a graphical plot. You’ll come out of the lab with a clear understanding of what happened during a boot, how long each component took, and how long it took overall, as well as the structure of what a running system looks like.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Viewing the Process Tree for a System

View the process tree for a systemd system.

View systemd Startup Order and Dependencies

View systemd Startup Order and Dependencies.

Plot out the systemd Boot Hierarchy

Plot out the systemd Boot Hierarchy.

Plot out the systemd Target Layout

Plot out the systemd Target Layout.

Additional Resources

You're a seasoned Linux sysadmin who has booted and used systemd-based systems and used them but have not yet had to implement them into your production environment.

You have a number of systems that need to be upgraded from their current version of the distribution that still uses the SysV init-style service management scheme. You particularly want to find out how systemd boots, what runs when, and how fast.

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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