Book Image

PostgreSQL High Performance Cookbook

By : Chitij Chauhan, Dinesh Kumar
Book Image

PostgreSQL High Performance Cookbook

By: Chitij Chauhan, Dinesh Kumar

Overview of this book

PostgreSQL is one of the most powerful and easy to use database management systems. It has strong support from the community and is being actively developed with a new release every year. PostgreSQL supports the most advanced features included in SQL standards. It also provides NoSQL capabilities and very rich data types and extensions. All of this makes PostgreSQL a very attractive solution in software systems. If you run a database, you want it to perform well and you want to be able to secure it. As the world’s most advanced open source database, PostgreSQL has unique built-in ways to achieve these goals. This book will show you a multitude of ways to enhance your database’s performance and give you insights into measuring and optimizing a PostgreSQL database to achieve better performance. This book is your one-stop guide to elevate your PostgreSQL knowledge to the next level. First, you’ll get familiarized with essential developer/administrator concepts such as load balancing, connection pooling, and distributing connections to multiple nodes. Next, you will explore memory optimization techniques before exploring the security controls offered by PostgreSQL. Then, you will move on to the essential database/server monitoring and replication strategies with PostgreSQL. Finally, you will learn about query processing algorithms.
Table of Contents (19 chapters)
PostgreSQL High Performance Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Replication using DRBD


In this recipe, we are going to cover block level replication using DRBD for Postgresql.

Getting ready

A working Linux machine is required for this setup. This setup requires network interfaces and the cLusterIP. These steps are carried out in a CentOS version 6 machine. Having covered the PostgreSQL setup in previous chapters, it is assumed that the necessary packages and prerequisites are already installed.

We will be using the following setup in our hierarchy:

  • Node1.author.org uses the LAN IP address 10.0.0.181 and uses 172.16.0.1 for crossover

  • Node2.author.org uses the LAN IP address 10.0.0.182 and uses the IP address 172.16.0.2 for crossover

  • dbip.author.org uses the cluster IP address 10.0.0.180

How to do it...

The following are the steps for block level replication using DRBD:

  1. First, temporarily disable SELINUX and set SELINUX to disabled and then save the file:

            vi /etc/selinux/config
            SELINUX=disabled
    
  2. In the next step, change the hostname and gateway...