Book Image

Linux Service Management Made Easy with systemd

4.5 (2)
Book Image

Linux Service Management Made Easy with systemd

4.5 (2)

Overview of this book

Linux Service Management Made Easy with systemd will provide you with an in-depth understanding of systemd, so that you can set up your servers securely and efficiently.This is a comprehensive guide for Linux administrators that will help you get the best of systemd, starting with an explanation of the fundamentals of systemd management.You’ll also learn how to edit and create your own systemd units, which will be particularly helpful if you need to create custom services or timers and add features or security to an existing service. Next, you'll find out how to analyze and fix boot-up challenges and set system parameters. An overview of cgroups that'll help you control system resource usage for both processes and users will also be covered, alongside a practical demonstration on how cgroups are structured, spotting the differences between cgroups Version 1 and 2, and how to set resource limits on both. Finally, you'll learn about the systemd way of performing time-keeping, networking, logging, and login management. You'll discover how to configure servers accurately and gather system information to analyze system security and performance. By the end of this Linux book, you’ll be able to efficiently manage all aspects of a server running the systemd init system.
Table of Contents (23 chapters)
1
Section 1: Using systemd
12
Section 2: Understanding cgroups
16
Section 3: Logging, Timekeeping, Networking, and Booting

Summary

In this first chapter, we've looked at the history of the most common Linux init systems. We've seen the ways in which the legacy init systems are deficient, and we've seen why systemd is a much better replacement. We wrapped things up by looking at the objections against systemd.

One of the challenges of learning systemd is that, until now, there hasn't been any real comprehensive documentation about it. There's basic usage documentation on the Red Hat website, but it doesn't even cover all components of the systemd ecosystem. There are only two systemd-specific books that I could find, which are a few years old. (One book is specific to Fedora, the other is specific to Ubuntu.) Even those books leave some things out. So, the challenge I've set for myself is to create a comprehensive, hands-on guide for all things systemd. In the chapters that follow, I'll do my best to accomplish that goal.

In the next chapter, we'll go on a quick tour of the systemd directories and files. I'll see you there.