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Linux Service Management Made Easy with systemd
Linux Service Management Made Easy with systemd

Linux Service Management Made Easy with systemd: Advanced techniques to effectively manage, control, and monitor Linux systems and services

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Linux Service Management Made Easy with systemd

Chapter 1: Understanding the Need for systemd

In this first chapter, we'll first briefly look at the history of Linux init systems. We'll then look at the shortcomings of the legacy init systems and why certain Linux engineers felt the need to develop a new type of init system. Finally, we'll look at the controversy that has surrounded systemd. For easy reference, here's a list of the topics:

  • The history of Linux init systems
  • The shortcomings of SysV init and upstart
  • The advantages of systemd
  • The systemd controversy

So, with the introductory comments out of the way, let's jump in.

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Key benefits

  • 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

Description

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.

Who is this book for?

This 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.

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

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Feb 03, 2022
Length: 420 pages
Edition : 1st
Language : English
ISBN-13 : 9781801815031
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Product Details

Publication date : Feb 03, 2022
Length: 420 pages
Edition : 1st
Language : English
ISBN-13 : 9781801815031
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Table of Contents

22 Chapters
Section 1: Using systemd Chevron down icon Chevron up icon
Chapter 1: Understanding the Need for systemd Chevron down icon Chevron up icon
Chapter 2: Understanding systemd Directories and Files Chevron down icon Chevron up icon
Chapter 3: Understanding Service, Path, and Socket Units Chevron down icon Chevron up icon
Chapter 4: Controlling systemd Services Chevron down icon Chevron up icon
Chapter 5: Creating and Editing Services Chevron down icon Chevron up icon
Chapter 6: Understanding systemd Targets Chevron down icon Chevron up icon
Chapter 7: Understanding systemd Timers Chevron down icon Chevron up icon
Chapter 8: Understanding the systemd Boot Process Chevron down icon Chevron up icon
Chapter 9: Setting System Parameters Chevron down icon Chevron up icon
Chapter 10: Understanding Shutdown and Reboot Commands Chevron down icon Chevron up icon
Section 2: Understanding cgroups Chevron down icon Chevron up icon
Chapter 11: Understanding cgroups Version 1 Chevron down icon Chevron up icon
Chapter 12: Controlling Resource Usage with cgroups Version 1 Chevron down icon Chevron up icon
Chapter 13: Understanding cgroup Version 2 Chevron down icon Chevron up icon
Section 3: Logging, Timekeeping, Networking, and Booting Chevron down icon Chevron up icon
Chapter 14: Using journald Chevron down icon Chevron up icon
Chapter 15: Using systemd-networkd and systemd-resolved Chevron down icon Chevron up icon
Chapter 16: Understanding Timekeeping with systemd Chevron down icon Chevron up icon
Chapter 17: Understanding systemd and Bootloaders Chevron down icon Chevron up icon
Chapter 18: Understanding systemd-logind Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

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Full star icon Full star icon Full star icon Full star icon Half star icon 4.7
(20 Ratings)
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4 star 15%
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1 star 5%
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F. Aug 09, 2024
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book is a great resource for anyone looking to make his system better, use more granular control over systemD, create process at boot, manage containers and as well as a great resource or handbook for any aspiring Linux Admin. I highly recommend this book for any passionate about Linux OS since that’s a considerable upgrade to learn when it comes to manage this awesome OS.Again, nearly everything you need to know about SystemD is into that book, from understanding it, till creating boot process and until the end of this book it is a real delight to feed the knowledge as if that was some sort of “Brain Food”. There might sometimes have some more reading to do, as an example I may cite the process hardening, but the author is giving the reader some good ways to find its requirements or ressources to dig deeper to find the right informations. As it is impossible to describe every process, then every hardening possible, I guess the author has done right with leading the reader to the right ressources for harden their process. The reader might also use other tools, such as Lynis, to audit the system and find which process should be hardened and which are actually as considered as “enough secured”, at least from the SystemD perspective… for sure, new exploits are going to emerge, then new updates are going to get ready to be installed, but it’s the same for any software… I would say that the major problem about this is about the developers that include voluntary a backdoor into their software and that are omitting to declare it or patching it, so guess Linux is a really good way to being secured on a respectable way, since you have complete control on your system and its parameters or configuration files… I wouldn’t say the same for other OSes, which are often a black box and that are surprising attacked, but they’re used by much more peoples, so they make of them a considerable target for hackers which don’t give a !$&@ about yourself, your privacy, your economies or your family.I’m a network Admin, converted as a pentester, and this is what I think about that book, that it may seriously damage the ignorance when it comes to SystemD, and which will make you a better Linux System Admin, pentester, Linux Power User, or…I hope you’ll enjoy that reading as I have enjoyed it, again, I highly recommend that book, as Linux Hardening, for any Linux Power User.
Amazon Verified review Amazon
Felipe Pereira Mar 08, 2022
Full star icon Full star icon Full star icon Full star icon Full star icon 5
If you are searching for a great book that explains how services work on Linux, this book is for you! I strongly recommend it.
Amazon Verified review Amazon
Michael Eramo Apr 10, 2022
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Note: I was provided with an advanced review copy of this book.This is a book is a quality Linux reference for systemd. I'm an educator, hobbyist, and tinkerer and my basic knowledge of Linux commands and OS was more than adequate so I could really get something from the book. You definitely will want to know some Linux basics and how to get virtual machines up and running, but once you do, the book is very straight forward in its goals.Each chapter is chunked up nicely in such a way that there is a clear focus with code that puts into practice the material being discussed. The author does a nice job of leaving very few questions unanswered. In fact, there were a few times in which I asked a question after reading a section only to find the question answered in the upcoming paragraphs. I also appreciate the comprehensive summaries and end of chapter questions to test your understanding of the material.I run an after school computer club with upper level high school students. In the past we have networked various Linux machines together and worked on learning Linux fundamentals. I may choose to use this as a resource in the classroom as well. Thanks for your efforts!
Amazon Verified review Amazon
Gautham Kantharaju Feb 03, 2022
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I am a Linux software developer using Linux for about more than 12+ years. There are many documentation from various Linux distributions but having all these information and explanation in one place is the key. Till today, until I read this book I came to know that I was not following the best practices when it comes to service management. Also was curious and always wanted to learn "CGROUPS" and you know what this books talks about cgroups too and many other topics. I did learn a lot from this book and I am pretty sure that others would too. I definitely recommend this book to others. Worth the money!
Amazon Verified review Amazon
Kenneth L. Armstrong Feb 03, 2022
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Are you a Linux professional or enthusiast that wants or needs to understand one of modern Linux’s critical systems? This book will definitely help get you going in the right direction. The assumption is that the reader is familiar with running basic Linux commands and how to use and administer a system. So if the reader is unsure how to install Linux on a computer they will need to seek out another book or resource. This is a very clear and concise introduction to systemd written for system administrators and those who wish to know more about how their Linux systems operate “under the hood.” Also, if you are looking to sit for any of the professional-level Linux certifications (LPI, Red Hat, etc.) this book will greatly assist in those endeavors.Each chapter breaks down the subject it tackles, which are typically specific components of systemd, in very easy to understand lessons. Each lesson ends with optional exercises that one can perform using recommended virtual machines. Several topics pertaining to the administrator’s toolkit are discussed with enough depth to get started and to understand what it is you are doing. An example is scheduling jobs, historically handled by at and cron, are covered by using systemd timers. Properly setting a system’s locale and time are handled by localectl and timedatectl. How does systemd work within the boot process, and why has it replaced upstart and init? The book places emphasis on the fact that even though there are new tools to learn the structure of the commands are consistent. The author does not shy away from pointing out instances where intentionally invoking systemd to handle a task would not be recommended, such as manually setting mount points with systemd. The minor differences between implementations of systemd between Red Hat and Debian based systems is also made clear and explained. For those wishing to learn more about containerization, the technology underpinning containers known as ‘cgroups’ is discussed very clearly including coverage of cgroups v2. The examples of controlling system resources via cgroups from this part of the book were particularly fun (for me, anyway).I have been using systemd on my Linux systems since Fedora made it the default in their distribution, and have had to slog through blog posts and random articles to glean useful information. The man pages for systemd are rather robust, but you need to know what you are looking for before you can really use them. This book on the other hand provides a one-stop reference for many of the tasks I find myself working with along with information on components I barely knew about or had never even heard of. If you are looking for a well-written compendium on systemd, you have found it.
Amazon Verified review Amazon
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