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

Creating a new container service with podman

Containers have been around for a long time, but they never became all that popular until Docker arrived on the scene with its new container management system. The original Docker system is cool, all right. But, it has some shortcomings, especially with security. For that reason, the good folk at Red Hat developed their own Docker replacement, which they call podman. podman comes with greatly enhanced security, and with cool features that aren't in Docker. The only problem is that podman is still only available on RHEL-type and Fedora distros, and everyone else still uses Docker. So, we'll perform these demos on the Alma Linux machine.

To install podman on your Alma machine, do:

[donnie@localhost ~]$ sudo dnf install podman-docker

This will install the podman package along with a shell script that invokes podman whenever you accidentally type docker. (Actually, that might not be by accident. You might have shell scripts...