Book Image

PostgreSQL Administration Cookbook, 9.5/9.6 Edition - Third Edition

Book Image

PostgreSQL Administration Cookbook, 9.5/9.6 Edition - Third Edition

Overview of this book

PostgreSQL is a powerful opensource database management system; now recognized as the expert's choice for a wide range of applications, it has an enviable reputation for performance and stability. PostgreSQL provides an integrated feature set comprising relational database features, object-relational, text search, Geographical Info Systems, analytical tools for big data and JSON/XML document management. Starting with short and simple recipes, you will soon dive into core features, such as configuration, server control, tables, and data. You will tackle a variety of problems a database administrator usually encounters, from creating tables to managing views, from improving performance to securing your database, and from using monitoring tools to using storage engines. Recipes based on important topics such as high availability, concurrency, replication, backup and recovery, as well as diagnostics and troubleshooting are also given special importance. By the end of this book, you will have all the knowledge you need to run, manage, and maintain PostgreSQL efficiently.
Table of Contents (13 chapters)

Creating a new user

In this recipe, we will show you two ways of creating a new database user, one with a dedicated command-line utility, and one using SQL commands.

Getting ready

To create new users, you must either be a superuser or have the CREATEROLE or CREATEROLE privilege.

How to do it...

From the command line, you can run the createuser command:

pguser@hvost:~$ createuser bob

If you add the --interactive command-line option, you activate the interactive mode, which means you will be asked some questions, as follows:

pguser@hvost:~$ createuser --interactive alice...