Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Red Hat Enterprise Linux 8 Administration
  • Table Of Contents Toc
  • Feedback & Rating feedback
Red Hat Enterprise Linux 8 Administration

Red Hat Enterprise Linux 8 Administration

By : Miguel Pérez Colino, Pablo Iranzo Gómez, Scott McCarty
4.5 (4)
close
close
Red Hat Enterprise Linux 8 Administration

Red Hat Enterprise Linux 8 Administration

4.5 (4)
By: Miguel Pérez Colino, Pablo Iranzo Gómez, Scott McCarty

Overview of this book

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. 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. Complete 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. You'll start by learning how to create an RHEL 8 virtual machine and get to grips with essential Linux commands. 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. 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. By 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. This book and its contents are solely the work of Miguel Pérez Colino, Pablo Iranzo Gómez, and Scott McCarty. The content does not reflect the views of their employer (Red Hat Inc.). This work has no connection to Red Hat, Inc. and is not endorsed or supported by Red Hat, Inc.
Table of Contents (25 chapters)
close
close
1
Section 1: Systems Administration – Software, User, Network, and Services Management
9
Section 2: Security with SSH, SELinux, a Firewall, and System Permissions
14
Section 3: Resource Administration – Storage, Boot Process, Tuning, and Containers
21
Section 4: Practical Exercises

Understanding RPM internals

Linux distributions tend to have their own package manager, from Debian with .deb to Pacman in Arch Linux and other more exotic mechanisms. The intention of the package managers is to keep software installed on the system, update it, patch it, keep dependencies, and maintain an internal database of what is installed on the system. RPM is used by distributions such as Fedora, openSUSE, CentOS, Oracle Linux, and, of course, RHEL.

To handle RPMs, the rpm command is available in the system, however, since the introduction of yum/dnf, it is hardly ever used in system administration, and is not included in RHCSA.

RPMs contain the following:

  • The files to be installed on the system, stored in CPIO format and compressed
  • Information on permissions and the assigned owner and group for each file
  • The dependencies required and provided by each package, along with, conflicts with other packages
  • Install, uninstall, and upgrade scripts to be applied...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY