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)

Creating handy-dandy utility containers

This recipe shows how to use Podman to quickly spin up a container to complete useful tasks.

This recipe will walk you through the process of creating super useful utilities leveraging containers. The basic principle of containers encourages us to formulate our containers to do only one thing – that is, to provide some form of utility and nothing more. You should not create a container that does too much. With that being said, most container images already exist to provide a useful utility. In this recipe, we are going to look at examples of containers that serve a useful purpose, and we’re going to explore how to make use of this.

Getting ready

We will require the following:

  • Oracle Linux
  • Podman

How to do it…

The main intention of this recipe is to show how we can use containers to achieve a function without installing additional packages on our local machine. Once you have Podman installed...