Book Image

PostgreSQL High Availability Cookbook - Second Edition

By : Shaun Thomas
Book Image

PostgreSQL High Availability Cookbook - Second Edition

By: Shaun Thomas

Overview of this book

Databases are nothing without the data they store. In the event of a failure - catastrophic or otherwise - immediate recovery is essential. By carefully combining multiple servers, it’s even possible to hide the fact a failure occurred at all. From hardware selection to software stacks and horizontal scalability, this book will help you build a versatile PostgreSQL cluster that will survive crashes, resist data corruption, and grow smoothly with customer demand. It all begins with hardware selection for the skeleton of an efficient PostgreSQL database cluster. Then it’s on to preventing downtime as well as troubleshooting some real life problems that administrators commonly face. Next, we add database monitoring to the stack, using collectd, Nagios, and Graphite. And no stack is complete without replication using multiple internal and external tools, including the newly released pglogical extension. Pacemaker or Raft consensus tools are the final piece to grant the cluster the ability to heal itself. We even round off by tackling the complex problem of data scalability. This book exploits many new features introduced in PostgreSQL 9.6 to make the database more efficient and adaptive, and most importantly, keep it running.
Table of Contents (18 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Installing and configuring Graphite

When viewing the collected data and statistics regarding our highly-available database, we can simply settle for the raw numbers. They tell a story and include precise measurements necessary for making decisions regarding architecture and incidence response. However, many would argue that this is much easier with graphs and charts, as they enable the identification of trends.

There are a lot of graphing libraries and tools, but relatively few of them are tailored to the needs of an agile monitoring team. The makers of Graphite helped fill this role, and they did so with an extremely versatile tool. Graphite makes visualizing the collected system statistics easy. Unfortunately, due to the number of installation requirements, administrators might skip it in favor of something easier to use.

We don't want this to happen to our readers! Follow along, and we'll help you take advantage of one of the most powerful system visualization suites available.

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