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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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Oracle Linux 8 – Patching Doesn’t Have to Mean Rebooting

I’ve rebooted when patching for my entire life, why change now?

Since Linux was released back in 1991, when the kernel was patched, you had to reboot the system. At the time, even the IBM mainframes that dominated corporate IT needed to be rebooted when patched, so it was considered normal for all other systems to be rebooted when patched. This process appeared to work fine for almost the next 20 years, but the seeds of change were planted in 2005 when a Massachusetts Institute of Technology (MIT) student came up with a simple question. What if you could patch without rebooting the system? His team came up with an answer in 2009 when Ksplice was released, enabling the ability to patch a Linux kernel while the system was running.

In this chapter, we will cover why you should start using Ksplice and how it is used to improve the security of your system.

This chapter contains the following recipes:

...

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