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Oracle Linux Cookbook

Oracle Linux Cookbook

By : Erik Benner, Erik B. Thomsen, Jonathan Spindel
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Oracle Linux Cookbook

Oracle Linux Cookbook

5 (4)
By: Erik Benner, Erik B. Thomsen, Jonathan Spindel

Overview of this book

Discover the power of Oracle Linux 8, the free and enterprise-grade Linux distribution designed for use in any environment, with this recipe-style book. Starting with instructions on how to obtain Oracle Linux for both X86 and ARM-based platforms, this book walks you through various installation methods, from running it as a Windows service to installing it on a Raspberry Pi. It unravels advanced topics such as system upgrades using Leapp for major version transitions and using a PXE server and kickstart files for more advanced installations. The book then delves into swapping kernels to take advantage of Oracle’s UEK, exploring boot options, managing software with DNF, and achieving high availability. Detailed recipes involving security topics will assist with tasks such as data encryption, both at rest and in motion. For developers, it offers guidance on building RPM files, using Docker and Podman in a containerized environment, working with AppStreams, and more. For large-scale deployments, the book introduces Oracle Linux Automation Manager for enterprise-level Ansible utilization, from setting up the Ansible server to basic playbook writing. Finally, you’ll discover strategies for cloud migration. By the end of this book, you’ll possess a comprehensive toolkit that will elevate your skills as a Linux administrator.
Table of Contents (16 chapters)
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Software Management with DNF

Without packages, a fresh Linux installation is about as useful as a car with no tires! You need to be able to add software to the system to make it useful. This can be done in several ways. Back in the old days (hey, I am a true gray-bearded Unix/Linux guy), you used to download the source files and then build and install them manually. On occasion, you could get prebuilt packages but, often, the dependencies that were required would take hours to run down manually. Then, in 1997, along came Red Hat Package Manager (RPM) files. These really simplified the process, as all you needed to do was track down all the RPM files needed to install an application, and off you went.

Then, the applications started getting more complex; an example is the Apache HTTP server – all of its optional features went from 2-3 RPMs to a dozen, plus all the required dependencies. Tracking down all the RPMs and their dependencies became a chore… and due to mismatched...

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