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)

Introduction

PostgreSQL consists of a set of server processes, the group leader of which is named the postmaster. Starting the server is the act of creating these processes, and stopping the server is the act of terminating those processes.

Each postmaster listens for client connection requests on a defined port number. Multiple concurrently running postmasters cannot share that port number. The port number is often used to uniquely identify a particular postmaster and hence also the database server that it leads.

When we start a database server, we refer to a data directory, which contains the heart and soul—or at least the data—of our database. Subsidiary tablespaces may contain some data outside the main data directory, so the data directory is just the main central location, and not the only place where data for that database server is held. Each running server...