Master all the skills required to successfully administer your Red Hat Enterprise Linux environment and pass the RHCSA certification exam.
Linux System Administration: Software, User and Network and Services Management
Security with SSH, SELinux, Firewall and System Permissions
Resources Administration: Storage, Boot process, Tuning and Containers
Red Hat Enterprise Linux 9 is the standard for enterprise Linux used from data centres to the cloud.
With this book you will learn how to deploy, access, tweak and improve enterprise services on any system on any cloud running Red Hat Enterprise Linux 9. Understand how to configure, and maintain systems, including software installation, update, and core services; configure local storage using partitions and logical volumes, assign, deduplicate, increase or reduce the storage; apply appropriate security policies, control the system permissions, allow or deny certain actions to the users; and not just deploy systems, but make them secure and reliable. This book provides a base for users who plan to become full-time Linux system administrators by presenting key command-line concepts and enterprise-level tools. Readers will understand and use essential tools for handling files, directories, command-line environments, and documentation, creating simple shell scripts or running commands. With a lot of command line examples, full of tips and real commands, you will learn by doing to save yourself a lot of time and frustration.
By the end of the book, you will be confident in managing the filesystem, the users, the storage, the network connectivity, the security and the software in RHEL 9 systems on any footprint.
What you will learn
Fundamentals of RHEL9 From a system deployment to user management.
Secure a system using SELinux policies and configuring firewall rules.
Learn LVM to manage volumes and maintain VDO deduplication.
Manage a system remotely using ssh and public key authentication.
Learn the boot process and kernel tunable to adjust your systems.
Who This Book Is For
This book is designed for anyone that aspires to build and work on IT infrastructures using Linux, or wants to learn more of the first layer of their architecture. They will benefit from this book as a reference for different useful tasks, tips will also help them prepare for the RHCSA certification.
Table of Contents
Getting RHEL up and running
Advanced installation options
Basic commands and simple shell scripts
Tools for regular operations
Securing system with users, groups and permissions
Enabling network connectivity
Adding, patching and managing software
Remote systems administration
Securing Network connectivity with firewall
Keeping system hardened with SELinux
System security profiles with OpenSCAP
Manage local storage and filesystems
Flexible storage management with LVM
Configure storage deduplication with VDO
Understanding boot process
Kernel tuning and performance profiles with Tuned
Managing containers with podman, buildah and skopeo
Practice Exercies – 1
Practice Exercises – 2
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