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Mastering Linux Administration

Mastering Linux Administration

By : Calcatinge, Balog
5 (7)
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Mastering Linux Administration

Mastering Linux Administration

5 (7)
By: Calcatinge, Balog

Overview of this book

Harness the power of Linux in modern data center management, leveraging its unparalleled versatility for efficiently managing your workloads in on-premises and cloud environments. In this second edition, you'll find updates on the latest advancements in Linux administration including containerization, shell scripting, and hypervisors. Written by an experienced Linux trainer, this book will start you off with Linux installation on on-premises systems. As you progress, you’ll master the Linux command line, files, packages, and filesystems. You'll explore essential Linux commands and techniques to secure your Linux environment. New to this edition is a chapter on shell scripting, providing structured guidance on using shell programming for basic Linux automation. This book also delves into the world of containers, with two new chapters dedicated to Docker containers and hypervisors, including KVM virtual machines. Once adept with Linux containers, you'll learn about modern cloud technologies, managing and provisioning container workloads using Kubernetes, and automating system tasks using Ansible. Finally, you'll get to grips with deploying Linux to the cloud using AWS and Azure-specific tools. By the end of this Linux book, you'll have mastered everyday administrative tasks, seamlessly navigating workflows spanning from on-premises to the cloud.
Table of Contents (24 chapters)
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1
Part 1:Basic Linux Administration
7
Part 2:Advanced Linux Administration
13
Part 3:Server Administration
17
Part 4:Cloud Administration

Backing up and restoring the system

Disasters can occur at any time. Risk is everywhere. In this respect, backing up your system is of utmost importance and needs to be done regularly. It is always better to practice good prevention than to recover from data loss and learn this the hard way.

Backup and recovery need to be done based on a well-thought-out strategy and need to take the RTO and RPO factors into consideration. The RTO should answer basic questions such as how fast to recover lost data and how this will affect the business operations, while the RPO should answer questions such as how much of your data you can afford to lose.

There are different types and methods of backup. The following are some examples:

Figure 10.1 – Backup methods and types

Figure 10.1 – Backup methods and types

When doing a backup, keep the following rules in mind:

  • The 321 rule means that you should always have at least three copies of your data, with two copies on two different media at...

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