Book Image

Oracle Linux Cookbook

By : Erik Benner, Erik B. Thomsen, Jonathan Spindel
Book Image

Oracle Linux Cookbook

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)

Pack it up, pack it in, let me begin, err, umm… build

In this recipe, we’re going to use Packer to start from source media (such as an ISO) to create our very own Vagrant box from scratch.

Getting started

You will need the following for this recipe:

  • Oracle Linux
  • Oracle VM VirtualBox
  • Packer

Refer to the Technical requirements section at the beginning of this chapter if you need help installing Oracle VM VirtualBox and Packer.

How to do it…

More often than not, you can search the Vagrant catalog and find pre-made Vagrantfiles containing the operating system you’re looking for. But what happens if what you need is not there? Or maybe you don’t trust the author of the Vagrantfile and/or you simply prefer to create your own. You can do this manually, or you can do this entirely with code, by leveraging Packer. In this recipe, we’ll use Packer to bake up a fresh Vagrant box from the Oracle Linux 8.8 source ISO....