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

System Security Services Daemon

The combination of NSS and PAM allows great flexibility but can also make common scenarios hard to configure and maintain. The SSSD project strives to simplify that process by coordinating the interaction of both PAM and NSS with remote databases.

One source of configuration complexity for single sign-on schemes is that they usually involve multiple components and protocols, such as LDAP for storing user information and Kerberos for issuing and checking cryptographic authentication tickets, plus a way to discover those services, typically via special DNS records. SSSD has built-in support for popular SSO schemes such as Microsoft Active Directory and FreeIPA, which greatly simplifies the process.

For this demonstration, we will set up a Microsoft Active Directory-compatible domain controller on Linux using the Samba project and then make a client machine join its domain. We will use Fedora Linux on both, but other distributions would mostly differ...