Book Image

PostgreSQL 14 Administration Cookbook

By : Simon Riggs, Gianni Ciolli
5 (1)
Book Image

PostgreSQL 14 Administration Cookbook

5 (1)
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 14 allows you to scale up your PostgreSQL infrastructure. With this book, you'll take a step-by-step, recipe-based approach to effective PostgreSQL administration. This book will get you up and running with all the latest features of PostgreSQL 14 while helping you explore the entire database ecosystem. You’ll learn how to tackle a variety of problems and pain points you may face as a database administrator such as creating tables, managing views, improving performance, and securing your database. As you make progress, the book will draw attention to important topics such as monitoring roles, validating backups, regular maintenance, and recovery of your PostgreSQL 14 database. This will help you understand roles, ensuring high availability, concurrency, and replication. Along with updated recipes, this book touches upon important areas like using generated columns, TOAST compression, PostgreSQL on the cloud, and much more. By the end of this PostgreSQL book, you’ll have gained the knowledge you need to manage your PostgreSQL 14 database efficiently, both in the cloud and on-premise.
Table of Contents (14 chapters)

Monitoring replication

Monitoring the status and progress of your replication is essential. We'll start by looking at the server status and then query the progress of replication.

Getting ready

You'll need to start by checking the state of your server(s).

Check whether a server is up using pg_isready or another program that uses the PQping() application programming interface (API) call. You'll get one of the following responses:

  • PQPING_OK (return code 0): The server is running and appears to be accepting connections.
  • PQPING_REJECT (return code 1): The server is running but is in a state that disallows connections (start up, shutdown, or crash recovery) or a standby that is not enabled with Hot Standby.
  • PQPING_NO_RESPONSE (return code 2): The server could not be contacted. This might indicate that the server is not running, there is something wrong with the given connection parameters (for example, wrong port number), or there is a network...