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PostgreSQL High Availability Cookbook - Second Edition

You're reading from PostgreSQL High Availability Cookbook - Second Edition

Product type Book

Published in Feb 2017

Publisher Packt

ISBN-13 9781787125537

Pages 536 pages

Edition 2nd Edition

Languages

Concepts

High Performance Programming

Author (1):

Shaun Thomas

Table of Contents (18) Chapters

Title Page

Credits

About the Author

About the Reviewer

www.Packtpub.com

Customer Feedback

Preface

1. Hardware Planning

2. Handling and Avoiding Downtime

3. Pooling Resources

4. Troubleshooting

5. Monitoring

6. Replication

7. Replication Management Tools

8. Simple Stack

9. Advanced Stack

10. Cluster Control

11. Data Distribution

Setting up a hot standby

It is a very good practice, if not an outright requirement, to have a second online copy of a PostgreSQL server in high availability clusters. Without such an online server, recovery from an outage may require hours of incidence response, backup recovery, and server provisioning. We have everything to gain by having extra online servers.

In addition, the process of setting up a hot standby acts as the basis for creating PostgreSQL streaming replicas. This means that we can reuse this recipe over and over again anytime we need to create PostgreSQL mirrors, provision extra backup copies, set up test instances, and so on.

All of this is made possible by the pg_basebackup command.

Getting ready

A hot standby server should have similar, if not exactly the same, specifications as the PostgreSQL server it is subscribed to. Try to accomplish this if possible. Also refer to the previous Securing the WAL stream recipe, as we will be consuming WAL files in this recipe.

How to do...

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Authors (1)

Shaun Thomas

Shaun M. Thomas has been working with PostgreSQL since late 2000. He is a frequent contributor to the PostgreSQL Performance and General mailing lists, assisting other DBAs with the knowledge he's gained over the years. In 2011 and 2012, he gave presentations at the Postgres Open conference on topics such as handling extreme throughput, high availability, server redundancy, and failover techniques. Most recently, he has contributed the Shard Manager extension and the walctl WAL management suite. Currently, he serves as the database architect at PEAK6 Investments, where he develops standard operating procedure (SOP) guidelines to facilitate reliable server architecture among many other tasks. Many of the techniques used in this book were developed specifically for this extreme environment. He believes that PostgreSQL has a stupendous future ahead, and he can't wait to see the advancements subsequent versions will bring. https://www.linkedin.com/in/bonesmoses

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