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)

Buildah and Skopeo – Podman’s friends with benefits

The title of this chapter mentions Podman and Friends. Well, up until this point, you have probably noticed we didn’t talk much about Podman’s friends. Podman brings along a couple of companions to facilitate all your container management needs. These buddies of Podman are otherwise known as Buildah and Skopeo.

Where Podman is primarily focused on running containers, Buildah focuses on building them, and Skopeo focuses on handling images and transferring them to/from remote container registries.

Getting ready

We will require the following:

  • Oracle Linux
  • Podman
  • Buildah
  • Skopeo

How to do it…

In this recipe, we’ll explore the basic usage of Buildah and Skopeo to reveal how these two friends of Podman can enhance your experience and workflow when dealing with containers.

Building container images with Buildah

While Podman can be used for basic container...