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

About the Reviewers

Muhammad Kamran Azeem is a seasoned IT professional with twenty years of experience in IT. He started working as a PC technician in 1995 and gradually got into database administration, system administration, high performance computing, and, lately, information security. He also taught undergraduate and graduate level courses for C/C++, data structures and algorithm design, Oracle developer, and a lot more, in different universities in Pakistan.

Kamran holds a master's degree in IT, and is certified under CISSP, CEH, RHCE, OCP, and CCNA programs. He is the author of Pakistan's first book on Linux system administration titled Linux Pocket Reference for System.

Administrators, and many training videos on using Linux as the main desktop operating system, as well as Linux system administration, all available through his website

He is an advocate of Free and Open Source Software (FOSS), and for the last ten years, he is the driving force behind the wave of adaptation of Linux in Pakistan.

He is currently working as a senior DevOps consultant for Praqma AS in Oslo, Norway, helping companies adopt modern software and IT infrastructure practices.

Denis Fateyev holds a master's degree in Computer Science and has been working with Linux for more than 10 years (mostly with RedHat and CentOS). He currently works as a Perl programmer and DevOps for a small German company. He has reviewed several books mostly related to CentOS, DevOps, and high availability technologies, including GitLab Cookbook, CentOS High Availability, CentOS High Performance by Packt Publishing. Being a keen participant in the open source community, he is a package maintainer at Fedora and Repoforge projects. He has a passion for foreign languages, namely, German and Spanish, and linguistics.

He can be reached at [email protected].

Lekshminarayanan K has been administering Linux/Unix servers since 2009. He had his first experience with the open source on Ubuntu 8.04 ever since then he has experienced many flavors of Linux like CentOS, Red-hat, Fedora and Debian. Lekshminarayan is also experienced in application administrations like Apache, Qmail, SVN, and GIT. He is currently teaching himself Shell and Python scripting and working as a Linux administrator at COMODO Inc.

During his free time, he enjoys photography and is too fond of books.

Oliver Pelz has more than 10 years of experience as a software developer and system administrator. He graduated with a diploma in Bioinformatics and is currently working at the German Cancer Research center in Heidelberg, where he has authored and coauthored several scientific publications in the field of Bioinformatics. Next to developing web applications and biological databases for his department and scientists all over the world, he is administrating a division-wide Linux-based data center and has set up two high-performance CentOS clusters for the analysis of high-throughput microscope and genome sequencing data. He loves writing code, riding his mountain bike in the Black Forest of Germany and is an absolute Linux and open source enthusiast for many years. He has contributed to several open source projects in the past and is also the author of the book CentOS 7 Linux Server Cookbook, Packt Publishing. He maintains an IT tech blog at