Chapter 1. Cluster Basics and Installation on CentOS 7

In this chapter, we will introduce the basic principles of clustering and show how to set up two Linux servers as members of a cluster, step by step.

As part of this process, we will install the CentOS 7 Linux distribution from scratch, along with the necessary packages, and finally configure key-based authentication for SSH access from one computer to the other. All commands, except if noted otherwise, must be run as root and are indicated by a leading $ sign throughout this book.