Hannu Krosing & Simon Riggs 
PostgreSQL 9 Administration Cookbook LITE: Configuration, Monitoring and Maintenance [EPUB ebook] 

Written in the cookbook style, this book offers learning and techniques through recipes. It contains step-by-step instructions for administrators and developers to manage databases in Postgre SQL. The book is designed in such a way that you can read it chapter by chapter or refer to recipes in no particular order. This book is for Sysadmins, Database Administrators, Architects, Developers, and anyone with an interest in planning for or running live production databases. The book assumes that you are familiar with the basic operation of Postgre SQL.