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Fedora Linux System Administration

Fedora Linux System Administration

By : Alex Callejas
5 (5)
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Fedora Linux System Administration

Fedora Linux System Administration

5 (5)
By: Alex Callejas

Overview of this book

Fedora Linux is a free and open-source platform designed for hardware, clouds, and containers that enables software developers and community members to create custom solutions for their customers. This book is a comprehensive guide focusing on workstation configuration for the modern system administrator. The book begins by introducing you to the philosophy underlying the open-source movement, along with the unique attributes of the Fedora Project that set it apart from other Linux distributions. The chapters outline best practices and strategies for essential system administration tasks, including operating system installation, first-boot configuration, storage, and network setup. As you make progress, you’ll get to grips with the selection and usage of top applications and tools in the tech environment. The concluding chapters help you get a clear understanding of the basics of version control systems, enhanced Linux security, automation, virtualization, and containers, which are integral to modern system administration. By the end of this book, you’ll have gained the knowledge needed to optimize day-to-day tasks related to Linux-based system administration.
Table of Contents (20 chapters)
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1
Part 1:The Fedora Project
3
Part 2:Workstation Configuration
8
Part 3:Productivity Tools
13
Part 4:System Administration Tools

Labeling and type enforcement

SELinux is a labeling system, which tells us that each file, directory, or object in the system has a corresponding label. Each file, process, directory, and port has a special security label called an SELinux context. A context is a tag name used by the SELinux policy to determine whether a process can access a file, directory, or port. Policies control the interaction between these elements. By default, the policy does not allow any interaction unless an explicit rule grants access. If no permission rule exists, access is not allowed. The Linux kernel enforces these rules.

SELinux contexts have different labels in their format, separated by colons: user, role, type, and sensitivity level. They are formed as follows:

user:role:type:level (optional)

Note

The sensitivity level is the part that is optional.

The targeted policy bases its rules on the third context component: the type context. Type context names usually end with _t.

Let’...

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