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

Active Directory authentication with Samba 4

Samba is an open source implementation of multiple protocols that are required for interoperability with Microsoft Windows machines, including the SMB file-sharing protocol (which is where the Samba name came from). Apart from file sharing, it also implements authentication and user management – initially, it only supported Windows NT domains, but since 4.0.0, it has full support for Active Directory that’s compatible with Windows Server 2008 and also includes built-in LDAP and DNS backends, which makes small installations very simple to deploy.

Setting up the domain controller

First, you will need to install the Samba domain controller package:

$ sudo dnf install samba-dc

Then, you may want to remove all configuration files for Samba and the Kerberos daemon to ensure a clean state:

$ sudo rm -f /etc/samba/smb.conf
$ sudo rm -f /etc/krb5.conf

Samba includes a command for automatically provisioning domain controllers...