Book Image

PostgreSQL 11 Administration Cookbook

By : Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala
Book Image

PostgreSQL 11 Administration Cookbook

By: Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala

Overview of this book

PostgreSQL is a powerful, open source database management system with an enviable reputation for high performance and stability. With many new features in its arsenal, PostgreSQL 11 allows you to scale up your PostgreSQL infrastructure. This book takes a step-by-step, recipe-based approach to effective PostgreSQL administration. The book will introduce you to new features such as logical replication, native table partitioning, additional query parallelism, and much more to help you to understand and control, crash recovery and plan backups. You will learn how to tackle a variety of problems and pain points for any database administrator such as creating tables, managing views, improving performance, and securing your database. As you make steady progress, the book will draw attention to important topics such as monitoring roles, backup, and recovery of your PostgreSQL 11 database to help you understand roles and produce a summary of log files, ensuring high availability, concurrency, and replication. By the end of this book, you will have the necessary knowledge to manage your PostgreSQL 11 database efficiently.
Table of Contents (19 chapters)
Title Page
Copyright and Credits
About Packt

Giving limited superuser powers to specific users

The superuser role has some privileges that can also be granted to non-superuser roles separately.

To give the bob role the ability to create new databases, run this:


To give the bob role the ability to create new users, run the following:


It is also possible to give ordinary users more fine-grained and controlled access to an action reserved for superusers using security definer functions. The same trick can also be used to pass partial privileges between different users.

Getting ready

First, you must have access to the database as a superuser in order to delegate powers. Here, we assume the use of the default superuser named postgres.

We will demonstrate two ways to make some superuser-only functionality available to a selected ordinary user.

How to do it…

An ordinary user cannot tell PostgreSQL to copy table data from a file. Only a superuser can do that, as follows:

pguser@hvost:~$ psql...