本文实例讲述了centos7环境下创建mysql5.6多实例的方法。分享给大家供大家参考，具体如下：

一、mysql安装目录说明

mysql5.6以二进制安装包安装在/data/mysql56下
数据目录为/data/mysql56/data下
配置文件为/etc/my.cnf下

二、多实例目录说明

/mysql-instance
|-- 3308
|-- data #3308实例数据目录
|-- 3309
|-- data #3309实例数据目录

> mkdir -p /mysql-instance/3308/data> mkdir -p /mysql-instance/3309/data

三、复制配置文件到实例目录下

> cp /data/mysql56/support-files/my-default.cnf /mysql-instance/3308/my.cnf> cp /data/mysql56/support-files/my-default.cnf /mysql-instance/3309/my.cnf

四、修改配置文件

> vi /mysql-instance/3308/my.cnf> vi /mysql-instance/3309/my.cnf[client]port = 3308socket = /mysql-instance/3308/mysql.sock[mysql]no-auto-rehash[mysqld]user = mysqlport = 3308socket = /mysql-instance/3308/mysql.sockbasedir = /data/mysql56datadir = /mysql-instance/3308/datapid-file = /mysql-instance/3308/mysql.pidrelay-log = /mysql-instance/3308/relay-binrelay-log-info-file = /mysql-instance/3308/relay-log.infoserver-id = 12[mysqld_safe]log-error = /mysql-instance/3308/mysql.errpid-file = /mysql-instance/3308/mysql.pid

3309的配置同上，只需把3308的地方换成3309

五、创建mysql多实例启动文件

> vi /mysql-instance/3308/mysql> vi /mysql-instance/3309/mysql#!/bin/shport=3308mysql_user="root"#请填写自已数据库密码mysql_pwd="123456"cmd_path="/data/mysql56/bin"mysql_sock="/mysql-instance/${port}/mysql.sock"mysql_start() { if [ ! -e "$mysql_sock" ];then printf "mysql start ... \n" /bin/sh ${cmd_path}/mysqld_safe --defaults-file=/mysql-instance/${port}/my.cnf 2>&1 > /dev/null & else printf "mysql is running ... \n" exit fi}mysql_stop() { if [ ! -e "$mysql_sock" ];then printf "mysql is stopped ... \n" exit else printf "mysql stop ... \n" ${cmd_path}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /mysql-instance/${port}/mysql.sock shutdown fi}mysql_restart() { printf "mysql restart ... \n" mysql_stop sleep 2 mysql_start}case $1 in start) mysql_start ;; stop) mysql_stop ;; restart) mysql_restart ;;*)printf "usage: /data/${port}/mysql {start|stop|restart}\n"esac

六、授权mysql用户目录权限

> chown -R mysql.mysql /mysql-instance> chmod 700 /mysql-instance/3308/mysql> chmod 700 /mysql-instance/3309/mysql

七、初始化mysql多实例数据库文件

> cd /daa/mysql56/scripts> ./mysql_install_db --basedir=/data/mysql56 --datadir=/mysql-instance/3308/data --user=mysql> ./mysql_install_db --basedir=/data/mysql56 --datadir=/mysql-instance/3309/data --user=mysql

八、启动mysql多实例

> /mysql-instance/3308/mysql start> /mysql-instance/3309/mysql start> netstat -lntup|grep 330

九、登陆mysql实例

> mysql -uroot -p -S /mysql-instance/3308/mysql.sock

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希望本文所述对大家MySQL数据库计有所帮助。