Book Image

PostgreSQL 9 High Availability Cookbook

By : Shaun Thomas
Book Image

PostgreSQL 9 High Availability Cookbook

By: Shaun Thomas

Overview of this book

A comprehensive series of dependable recipes to design, build, and implement a PostgreSQL server architecture free of common pitfalls that can operate for years to come. Each chapter is packed with instructions and examples to simplify even highly complex database operations. If you are a PostgreSQL DBA working on Linux systems who want a database that never gives up, this book is for you. If you've ever experienced a database outage, restored from a backup, spent hours trying to repair a malfunctioning cluster, or simply want to guarantee system stability, this book is definitely for you.
Table of Contents (12 chapters)
11
Index

Setting up Bucardo


Bucardo is another popular logical replication engine that actually seems to have originated earlier than Slony, in 2002. Like Slony, it also uses triggers to perform its synchronization activity, but its syntax is much simpler. Furthermore, it also provides multimaster capabilities; this means that changes made in either the primary or secondary node will appear in both copies of a replicated table.

There is something to be said for tools that encourage simplicity when maintaining a complex high availability architecture. Let's explore Bucardo further.

Getting ready

The latest stable version of Bucardo at the time of writing this book is 4.5.0. Obtain the latest source package from the following URL:

http://bucardo.org/wiki/Bucardo

Bucardo is written in Perl, so it requires quite a few Perl-based prerequisites. On Debian-based systems, install them using the following apt-get commands:

sudo apt-get install libdbix-safe-perl libdbd-pg-perl
sudo apt-get install postgresql...