Develop the skills required to administer your RHEL environment on-premises and in the cloud while preparing for the RHCSA exam Purchase of the print or Kindle book includes a free eBook in PDF format Key Features Become a pro at system administration from installation to container management - Secure and harden your Linux environment using SSH, SELinux, firewall, and system permissions - Gain confidence to pass the RHCSA exam with the help of practice tests Book Description With Red Hat Enterprise Linux 9 becoming the standard for enterprise Linux used from data centers to the cloud, Linux administration skills are in high demand. With this book, you'll learn how to deploy, access, tweak, and improve enterprise services on any system on any cloud running Red Hat Enterprise Linux 9. Throughout the book, you'll get to grips with essential tasks such as configuring and maintaining systems, including software installation, updates, and core services. You'll also understand how to configure the local storage using partitions and logical volumes, as well as assign and deduplicate storage. You'll learn how to deploy systems while also making 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, along with essential tools for handling files, directories, command-line environments, and documentation for creating simple shell scripts or running commands. With the help of command line examples and practical tips, you'll learn by doing and save yourself a lot of time. By the end of the book, you'll have gained the confidence to manage the filesystem, users, storage, network connectivity, security, and software in RHEL 9 systems on any footprint. What you will learn Become well versed with the fundamentals of RHEL9―from system deployment to user management - Secure a system by using SELinux policies and configuring firewall rules - Understand LVM to manage volumes and maintain VDO deduplication - Manage a system remotely using SSH and public key authentication - Get the hang of the boot process and kernel tunable to adjust your systems - Automate simple tasks using scripts or Ansible Playbooks Who this book is for This book is for Red Hat Enterprise Linux system administrators and Linux system administrators. It's also a good resource for any IT professional who wants to learn system administration. RHCSA certification candidates will find this book useful in their preparation for the certification exam. Table of Contents Getting RHEL Up and Running - RHEL 9 Advanced Installation Options - Basic Commands and Simple Shell Scripts - Tools for Regular Operations - Securing Systems with Users, Groups, and Permissions - Enabling Network Connectivity - Adding, Patching, and Managing Software - Administering Systems Remotely - Securing Network Connectivity with firewalld - Keeping Your System Hardened with SELinux - System Security Profiles with OpenSCAP - Managing Local Storage and Filesystems - Flexible Storage Management with LVM - Advanced Storage Management with Stratis and VDO - Understanding the Boot Process - Kernel Tuning and Managing Performance Profiles with tuned - Managing Containers with Podman, Buildah, and Skopeo - Practice Exercises – 1 - Practice Exercises – 2 "Red Hat Enterprise Linux 9 Administration is a comprehensive guide covering many topics, from basic system administration tasks to more advanced topics such as security and networking. The authors explain complex concepts in a clear and concise manner. The book is also well-organized and easy to follow. One of the strengths of the book is its focus on hands-on learning. The authors provide numerous examples and exercises that’ll help readers learn by doing. This makes the book an excellent resource for beginners and experienced system administrators. The book is also a valuable resource for those preparing for the Red Hat Certified System Administrator (RHCSA) certification exam. The authors cover all of the topics covered in the exam and provide helpful tips and advice on how to pass the exam. Overall, this book is well-written, well-organized, and full of valuable information, making it an excellent resource for anyone who wants to learn how to administer Red Hat Enterprise Linux 9. I highly recommend it to anyone interested in learning more about RHEL 9." -- Ben Silverman, SuperUser Editorial Advisory Board / Open Infra Summit - Tech Programming Cmte (5G, Edge, and NFV) at OpenStack "The world of Linux system administration is vast and complex, with Red Hat Enterprise Linux (RHEL) being one of the most popular distributions in the enterprise environment. The book Red Hat Enterprise Linux 9 Administration by Gomez, Requena, Colino, and McCarty is a must-read for both seasoned and aspiring system administrators who wish to master the features of RHEL 9. Written by a team of authors with diverse backgrounds in Linux