Book Image

MySQL 8 Administrator???s Guide

By : Chintan Mehta, Ankit K Bhavsar, Hetal Oza, Subhash Shah
Book Image

MySQL 8 Administrator???s Guide

By: Chintan Mehta, Ankit K Bhavsar, Hetal Oza, Subhash Shah

Overview of this book

MySQL is one of the most popular and widely used relational databases in the world today. The recently released version 8.0 brings along some major advancements in the way your MySQL solution can be administered. This handbook will be your companion to understand the newly introduced features in MySQL and show you how you can leverage them to design a high-performance MySQL solution for your organization. This book starts with a brief introduction to the new features in MySQL 8, and then quickly jumping onto the crucial administration topics that you will find useful in your day-to-day work. Topics such as migrating to MySQL 8, MySQL benchmarking, achieving high performance by implementing the indexing techniques, and optimizing your queries are covered in this book. You will also learn how to perform replication, scale your MySQL solution and implement effective security techniques. There is also a special section on the common and not so common troubleshooting techniques for effective MySQL administration is also covered in this book. By the end of this highly practical book, you will have all the knowledge you need to tackle any problem you might encounter while administering your MySQL solution.
Table of Contents (17 chapters)

MySQL 8 downgrading

Downgrading is the reverse process of up-gradation, where we will move from a higher version of MySQL to a lower version of MySQL. In this section, we cover how to downgrade from MySQL 8 to MySQL 5.7. A downgrade that does not support a version skip means that downgrading from MySQL 8 to MySQL 5.6 is not supported. Within the same series where a version skip is supported means you can downgrade from MySQL 8.z to MySQL 8.x by skipping the MySQL 8.y version. First, we will explain some basic points that need to be understood before starting downgrading.

Downgrading methods

An in-place downgrade means shutting down the new version of MySQL 8, replacing its binaries or packages with the old version of MySQL...