![]() ![]() To create a bootable USB thumb drive from a machine with Linux or macOS, this is as simple as doing a "disk dump" with the dd application. The server will require to boot (start loading the system) from an external device such as a USB thumb drive or optical disk (whether physical or emulated through the out-of-band capabilities). We will not get into the details of these preparations, except for the boot sequence. Common steps include configuring the disks in the internal array, connecting it to the networks, preparing the switches for any interface aggregation that is expected (teaming, bonding), preparing access to external disk arrays (in other words, fiber channel arrays), setting up out-of-band capabilities, and securing the BIOS configuration. Preparation for a physical server installationĪ physical server requires some initial setup before beginning with installation. We will follow the default steps, reviewing the options available for each one. Now it is time to give them a go in the next section.įor this section of the chapter, we will follow the typical installation process to have RHEL installed on a machine. ![]() These are the same bits that are used in production machines worldwide and that you can use yourself for learning purposes with your developer subscription. We have the software, in this case the ISO image, to install RHEL8 in any computer. An article describing the process is available here. Red Hat provides a list of sha256 checksums for doing so in the downloads section of the Customer Portal ( ). Checksums are a way to review a file and provide a set of letters and numbers that can be used to verify that the file is precisely the same one as in the origin. To verify the ISO image, and ensure that the one we have obtained is not corrupted, or altered, a mechanism called "checksum" can be used. This file will later be used to install our machines, whether dumping it to a USB drive for Bare Metal installations, unpacking it for network installations, or attaching it for virtual machine installations (or using out-of-band capabilities in servers such as IPMI, iLO, or iDRAC) The ISO image is a file that contains an exact copy of the contents of a full DVD (even when we are not using a DVD). and is not endorsed or supported by Red Hat, Inc.įigure 1.6 – Download dialog for RHEL8 for x86_64 This work has no connection to Red Hat, Inc. The content does not reflect the views of their employer (Red Hat Inc.). This book and its contents are solely the work of Miguel Pérez Colino, Pablo Iranzo Gómez, and Scott McCarty. As you advance, the book will help you explore disk partitioning, LVM configuration, Stratis volumes, disk compression with VDO, and container management with Podman, Buildah, and Skopeo.īy the end of this book, you'll have covered everything included in the RHCSA EX200 certification and be able to use this book as a handy, on-the-job desktop reference guide. You'll then understand how to manage users and groups on an RHEL 8 system, install software packages, and configure your network interfaces and firewall. You'll start by learning how to create an RHEL 8 virtual machine and get to grips with essential Linux commands. With Red Hat Enterprise Linux (RHEL) becoming the most popular choice for enterprises worldwide, achieving the Red Hat Certified System Administrator (RHCSA) certification will validate your Linux skills to install, configure, and troubleshoot applications and services on RHEL systems.Ĭomplete with easy-to-follow tutorial-style content, self-assessment questions, tips, best practices, and practical exercises with detailed solutions, this book covers essential RHEL commands, user and group management, software management, networking fundamentals, and much more. ![]() Whether in infrastructure or development, as a DevOps or site reliability engineer, Linux skills are now more relevant than ever for any IT job, forming the foundation of understanding the most basic layer of your architecture. ![]()
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