دانلود کتاب systemd برای مدیران سیستم لینوکس

Explore the world of systemd, the modern but controversial replacement for init and SystemV init scripts. systemd can evoke a wide range of reactions from SysAdmins and others responsible for keeping Linux systems up and running. The fact that systemd is taking over so many system management tasks in modern Linux systems has engendered pushback and discord among some groups of developers and SysAdmins. Yet that wide reach of systemd is the very reason it’s so popular with others. This book will help you to understand systemd’s strengths and weaknesses and why there’s no truth in the myth that systemd is a monolithic monstrosity. systemd is the mother of all processes and is also responsible for bringing the Linux host up to a state in which productive work can be done. You’ll learn about the functions assumed by systemd, which is far more extensive than the old init program, and how it manages many aspects of a running Linux host, including • Mounting filesystems • Managing hardware • Creating new systemd services and understanding existing ones • Creating timers that trigger system maintenance events • Starting and managing the system services that are required to have a productive Linux host • Using the systemd journal to access critical performance and problem-solving information • Why the systemd plan to take over the world is actually a good thing This book introduces you to systemd with an overview and exploration of the controversy surrounding it. We’ll cover systemd’s major components and how they can provide insight into Linux startup, as well as how to manage the tools and services required to operate and maintain a running Linux computer. This book will help demystify systemd. You’ll learn what it is, what it does, and how to use it to keep Linux systems up and running. You’ll explore the major functional components of systemd with real-world examples to illustrate their typical usage. You’ll also learn pragmatic workarounds, hints, and tricks to minimize the issues that systemd does have and ensure you have maximized your system’s functionality and security. You’ll learn to manage each of the major functional components of systemd and learn from real-world examples to illustrate their typical usage by SysAdmins. This book is intended for Linux system administrators (SysAdmins) who need to or are already in the process of switching from SystemV to systemd. It’s also intended for SysAdmins with more systemd experience but who want to improve their knowledge and skills with systemd. This book is not for anyone who is not a SysAdmin. If you’re only interested in getting your work done and have no interest in what’s happening under the covers, if you call upon others to fix your computer when something goes awry, this is not the book for you.