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

Setting up a sample database

In order to properly test our MariaDB database server, we need a database populated with sample data. For this reason, we will use the Employees database, developed by Patrick Crews and Giuseppe Maxia and provided by Oracle Corporation under a Creative Commons Attribution-Share Alike 3.0 Unported License. It provides a very large dataset (~160 MB and ~4 million records) spread over six tables, which will be ideal for our performance tests.


The Creative Commons Attribution-Share Alike 3.0 Unported License, available at, grants us the following freedoms regarding the Employees database:

Share: This lets us copy and redistribute the material in any medium or format

Adapt: This lets us remix, transform, and build upon the material

for any purpose, even commercially.

The licensor cannot revoke these freedoms as long as you follow the license terms.

Downloading and installing the Employees database

Let's proceed with...