Book Image

Linux Service Management Made Easy with systemd

4 (1)
Book Image

Linux Service Management Made Easy with systemd

4 (1)

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

Chapter 13: Understanding cgroup Version 2

In this chapter, we'll look at cgroup Version 2. We'll see how it's different from cgroups Version 1, and how it improves upon Version 1. After that, we'll take a brief look at how to work with it. We'll wrap up by converting the AlmaLinux machine to use cgroup Version 2. Learning how to use cgroup Version 2 will be very helpful to developers of new software, as well as to Linux administrators who want to be prepared for the future.

By the way, that's not a typo that you see in the chapter title. One of the Version 2 changes is in the official name of the technology. So, we have cgroups Version 1, and cgroup Version 2. Strange, but true. (I didn't explain this before, because I didn't want to create more confusion).

Specific topics in this chapter include:

  • Understanding the need for Version 2
  • Understanding the improvements in Version 2
  • Setting resource limits on rootless containers...