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

Setting up hot streaming replication


In this recipe, we are going to set up a master/slave streaming replication.

Getting ready

For this exercise, you need two Linux machines each with the latest version of PostgreSQL 9.6 installed. We will be using the following IP addresses for master and slave servers:

  • Master IP address: 192.168.0.4

  • Slave IP address: 192.168.0.5

How to do it...

The following steps show you how to set up master/slave streaming replication:

  1. Set up password-less authentication between master and slave for the Postgres user.

  2. First, we are going to create a user ID on the master, which will be used by the slave server to connect to the PostgreSQL database on the master server:

            psql -c "CREATE USER repuser REPLICATION LOGIN ENCRYPTED 
            PASSWORD 'charlie';"
    
  3. The next step is to allow the replication user that was created in the previous step to allow access to the master Postgresql server.

    This is done by making the necessary changes as in the pg_hba.conf file:

      ...