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

Technical requirements

We'll start with the same Ubuntu Server and Alma virtual machines that we have been using throughout. We'll use these to look at a normal BIOS-based GRUB2 configuration.

To see how the GRUB2 bootloader works on an EFI-based machine, you'll need to create another pair of Alma and Ubuntu Server virtual machines with the EFI feature enabled. To do that, create the initial VirtualBox setup for the Alma and Ubuntu machines as you always do. Then, before you start up the machines to install the operating system, open the Settings dialog box. Under the System menu, click the Enable EFI checkbox, as shown here:

Figure 17.1 – Checking the Enable EFI box

Then, install the operating system as you normally would.

To look at a systemd-boot environment, you'll need to create a virtual machine with Pop!_OS Linux. Enable the EFI feature as you did for the Alma and Ubuntu machines, and install the operating system...