Book Image

Linux for System Administrators

By : Viorel Rudareanu, Daniil Baturin
Book Image

Linux for System Administrators

By: Viorel Rudareanu, Daniil Baturin

Overview of this book

Linux system administration is an essential aspect of maintaining and managing Linux servers within an organization. The role of a Linux system administrator is pivotal in ensuring the smooth functioning and security of these servers, making it a critical job function for any company that relies on Linux infrastructure. This book is a comprehensive guide designed to help you build a solid foundation in Linux system administration. It takes you from the fundamentals of Linux to more advanced topics, encompassing key areas such as Linux system installation, managing user accounts and filesystems, networking fundamentals, and Linux security techniques. Additionally, the book delves into the automation of applications and infrastructure using Chef, enabling you to streamline and optimize your operations. For both newcomers getting started with Linux and professionals looking to enhance their skills, this book is an invaluable hands-on guide with a structured approach and concise explanations that make it an effective resource for quickly acquiring and reinforcing Linux system administration skills. With the help of this Linux book, you’ll be able to navigate the world of Linux administration confidently to meet the demands of your role.
Table of Contents (21 chapters)
Part 1: Linux Basics
Part 2: Configuring and Modifying Linux Systems
Part 3: Linux as a Part of a Larger System


In this chapter, you learned about logs and how to configure rsyslog for centralized logging. Using various rsyslog input and output plugins, you transmitted server logs over the network to the consolidated rsyslog server. Your rsyslog server is now the only location you need to look for logs.

We also provided examples of how to read systemd journal logs. The journalctl command is a powerful resource for diagnosing issues with Linux services and finding problems in the OS.

Finally, you learned about the power of the dmesg command and how it can be used. dmesg is a powerful tool that can help you troubleshoot system problems and monitor system events in Linux.

In the next chapter, we will talk about centralized authentication, where you can use a single server for all your clients to authenticate against.