Book Image

CentOS High Performance

By : Gabriel Cánepa
Book Image

CentOS High Performance

By: Gabriel Cánepa

Overview of this book

CentOS is the enterprise level Linux OS, which is 100% binary compatible to Red Hat Enterprise Linux (RHEL). It acts as a free alternative to RedHat's commercial Linux offering, with only a change in the branding. A high performance cluster consists in a group of computers that work together as one set parallel, hence minimizing or eliminating the downtime of critical services and enhancing the performance of the application. Starting with the basic principles of clustering, you will learn the necessary steps to install a cluster with two CentOS 7 servers. We will then set up and configure the basic required network infrastructure and clustering services. Further, you will learn how to take a proactive approach to the split-brain issue by configuring the failover and fencing of the cluster as a whole and the quorum of each node individually. Further, we will be setting up HAC and HPC clusters as a web server and a database server. You will also master the art of monitoring performance and availability, identifying bottlenecks, and exploring troubleshooting techniques. At the end of the book, you’ll review performance-tuning techniques for the recently installed cluster, test performance using a payload simulation, and learn the necessary skills to ensure that the systems, and the corresponding resources and services, are being utilized to their best capacity.
Table of Contents (13 chapters)
CentOS High Performance
About the Author
About the Reviewers

Chapter 2. Installing Cluster Services and Configuring Network Components

In this chapter, you will learn how to set up and configure the basic required network infrastructure and also the clustering components that we installed in the previous chapter.

In addition to this, we will review the basic and important concepts of firewalling and Internet protocols, and we will explain how to add the firewall rules that will allow communication between the nodes and the proper operation of the clustering services on each node.

If your native language is any other than English, you must have taken an English class or taught yourself (as I did) before being able to read this book. The same thing happens when two people who do not speak the same language want to communicate with each other. At least one of them needs to know the language of the other, or the two of them need to agree on a common idiom in order to be able to understand each other.

In networking, the equivalent of languages in the above...