Book Image

PostgreSQL 10 Administration Cookbook - Fourth Edition

By : Simon Riggs, Gianni Ciolli
Book Image

PostgreSQL 10 Administration Cookbook - Fourth Edition

By: Simon Riggs, Gianni Ciolli

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 10 allows users to scale up their PostgreSQL infrastructure. This book takes a step-by-step, recipe-based approach to effective PostgreSQL administration. Throughout this book, you will be introduced to these new features such as logical replication, native table partitioning, additional query parallelism, and much more. You will learn how to tackle a variety of problems that are basically the pain points for any database administrator - from creating tables to managing views, from improving performance to securing your database. More importantly, the book pays special attention to topics such as monitoring roles, backup, and recovery of your PostgreSQL 10 database, ensuring high availability, concurrency, and replication. By the end of this book, you will know everything you need to know to be the go-to PostgreSQL expert in your organization.
Table of Contents (14 chapters)

Preventing new connections

In certain emergencies, you may need to lock down the server completely, or just prevent specific users from accessing the database. It's hard to foresee all the situations in which you might need to do this, so we will present a range of options.

How to do it...

Connections can be prevented in a number of ways, as follows:

  • Pause and resume the session pool. See the Setting up a connection pool recipe later in this chapter on controlling connection pools.
  • Stop the server! See the Stopping the server safely and quickly and Stopping the server in an emergency recipes, but this is not recommended.
  • Restrict the connections for a specific database to zero, by setting the connection limit to zero...