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Full Description
A comprehensive guide for teaching system administrators, developers, and security professionals how to create their own systemd units and maintain system security
Key Features
Maintain and troubleshoot systemd services with ease
Learn to create, modify, and reload service files and use systemd utilities
Use cgroups to control resource usage and enhance security
Book DescriptionLinux 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. What you will learn
Use basic systemd utilities to manage a system
Create and edit your own systemd units
Create services for Podman-Docker containers
Enhance system security by adding security-related parameters
Find important information with journald
Analyze boot-up problems
Configure system settings with systemd utilities
Who this book is forThis book is best suited for Linux administrators who want to learn more about maintaining and troubleshooting Linux servers. It will also be useful for aspiring administrators studying for a Linux certification exam, developers looking to learn how to create systemd unit files, and security administrators who want to understand the security settings that can be used in systemd units and how to control resource usage with cgroups. Before you dive into this book, you'll need a solid working knowledge of basic Linux commands.
Contents
Table of Contents
Understanding the Need for systemd
Understanding systemd Directories and Files
Understanding Service, Path, and Socket Units
Controlling systemd Services
Creating and Editing Services
Understanding systemd Targets
Understanding systemd Timers
Understanding the systemd Boot Process
Setting System Parameters
Understanding Shutdown and Reboot Commands
Understanding cgroups Version 1
Controlling Resource Usage with cgroups Version 1
Understanding cgroup Version 2
Using journald
Using systemd-networkd and systemd-resolved
Understanding Timekeeping with systemd
Understanding systemd and Bootloaders
Understanding systemd-logind
