Book Image

Mastering PostgreSQL 15 - Fifth Edition

By : Hans-Jürgen Schönig
Book Image

Mastering PostgreSQL 15 - Fifth Edition

By: Hans-Jürgen Schönig

Overview of this book

Starting with an introduction to the newly released features of PostgreSQL 15, this updated fifth edition will help you get to grips with PostgreSQL administration and how to build dynamic database solutions for enterprise apps, including designing both physical and technical aspects of the system. You'll explore advanced PostgreSQL features, such as logical replication, database clusters, advanced indexing, and user management to manage and maintain your database. You'll then work with the PostgreSQL optimizer, configure PostgreSQL for high speed, and move from Oracle to PostgreSQL. Among the other skills that the book will help you build, you’ll cover transactions, handling recursions, working with JSON and JSONB data, and setting up a Patroni cluster. It will show you how to improve performance with query optimization. You'll also focus on managing network security and work with backups and replication while exploring useful PostgreSQL extensions that optimize the performance of large databases. By the end of this PostgreSQL book, you’ll be able to use your database to its utmost capacity by implementing advanced administrative tasks with ease.
Table of Contents (16 chapters)

Creating log files

Now that we’ve taken a deep look at the system views provided by PostgreSQL, it’s time to configure logging. Fortunately, PostgreSQL provides us with an easy way to work with log files and helps people set up a good configuration easily.

Collecting logs is important because it can point to errors and potential database problems. In this section, you will learn how to configure logging properly.

The postgresql.conf file contains all the parameters you need so that you’re provided with all the necessary information.

Configuring the postgresql.conf file

In this section, we will go through some of the most important entries in the postgresql.conf file that we can use in order to configure logging and see how logging can be used in the most beneficial way.

Before we get started, I want to say a few words about logging in PostgreSQL in general. On Unix systems, PostgreSQL will send log information to stderr by default. However, stderr...