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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

Copying a few tables with Slony

Once Slony has been installed and is running on both nodes, we can actually make use of it and copy tables to a remote database. For high availability PostgreSQL servers, making data available to external systems means long-running and potentially disruptive ad hoc queries run elsewhere. It also means that reporting environments have direct copies of relevant tables and do not need to retrieve this data from our OLTP systems.

While it is possible for OLTP servers to act as OLAP systems as well, these workloads are quite different. For the best performance possible and the least risk of outages, each server should be specialized. So, let's use Slony to do just that.

Getting ready

We will be continuing where we left off in the Setting up Slony recipe. Please make sure to have completed that recipe before continuing. As we want tables to test Slony with, we should create some. The pgbench utility can do this quickly. Execute this command on the primary PostgreSQL...

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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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