Running multiple mysql on the same machine

The same machine runs multiple mysql:
The simplest method is to install each mysql under a different user, such as mysql1 and mysql2. Under each user, perform the following operations:
export MYSQL_HOME=/home/mysql1/ mysql
shell> groupadd mysql
shell> useradd -g mysql mysql1
shell> cd /home/mysql1
shell>tar -xzvf /home/mysql1/mysql-VERSION-OS.tar.gz
shell> ln -s mysql- VERSION-OS.tar.gz mysql
shell> cd mysql
cp support-files/my-large.cnf (select according to actual situation) ./my.cnf
vi my.cnf, mainly modify [client] and [mysqld] The following port and socket, and specify the character set, for example:
[client]
port = 3307
socket = /home/mysql1/mysql/data/mysql.sock
# The MySQL server
[mysqld]
default-character- set = utf8
port = 3307
socket = /home/mysql1/mysql/data/mysql.sock
. . . . . .
shell> scripts/mysql_install_db --user=mysql1
shell> chown -R root:mysql .
shell> chown -R mysql1:mysql data
shell> bin/mysqld_safe --user=mysql &
mysql2 User executed and mysql1 Similar, the difference is to specify different MYSQL_HOME, different ports and sockets

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