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Linux+ Troubleshooting: Diagnose Issues Using Systemd

In this lab, you’ll practice administering Linux services using systemd. When you’re finished, you’ll have the skills to debug any service startup failures in Linux using systemd and journal files.

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Lab Info
Rating
(19)
Level
Beginner
Last updated
Jul 30, 2025
Duration
1h 0m

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Table of Contents
  1. Challenge

    Get Started in the Lab Environment

    Here are the initial instructions and explanation of the lab environment. Read this while your environment is busy creating itself from nothing. Yes, this violates physics; we know. How fun!

  2. Challenge

    Explore the Development Environment

    You will explore some systemd commands and will learn how to use the systemd-analyze command to diagnose boot related issues.

  3. Challenge

    Understand the systemd’s service units

    You will learn about systemd's unit files. What they are, how to set up a unit file, and how to manage systemd unit files using systemctl command.

  4. Challenge

    Explore the apache2 Installation

    apache2 has been installed for you; you will learn a bit about it, and diagnose an issue.

  5. Challenge

    Troubleshoot Apache2 Start-up Failure using Journal Files

    To finish the lab, you will use journalctl to debug the apache2 server startup issue.

About the author

Subhasish has been working on DevOps and cloud technologies since 2015 and in free time he trains people in these technologies. He is interested in AWS, Docker, and k8s

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