MySQL Multi-instance Introduction

What is MySQL multi-instance:

After we install MySQL, we start the MySQL service through/etc/init.d/mysqld start, a MySQL service is a MySQL instance, when we start multiple MySQL services, it is equivalent to running multiple MySQL instances, this is the M Ysql multiple instances. However, we can not execute multiple/etc/init.d/mysqld start to launch several MySQL instances, this will certainly be an error, indicating that there is already a MySQL is running, so the principle of multi-instance is: a common set of MySQL installation program, using different configuration files, Different boot files, different data files, listening to different ports.

MySQL Multi-instance Introduction