centos7下yum安装mysql5.6.30及单机配置多实例

1.在mysql官网上载tar包
MySQL-5.6.30-1.el6.i686.rpm-bundle.tar

进目录cd /home/fuyouling/
解压tar -xvf MySQL-5.6.30-1.el6.i686.rpm-bundle.tar

MySQL-client-5.6.30-1.el7.x86_64.rpm
MySQL-devel-5.6.30-1.el7.x86_64.rpm
MySQL-embedded-5.6.30-1.el7.x86_64.rpm
MySQL-server-5.6.30-1.el7.x86_64.rpm
MySQL-shared-5.6.30-1.el7.x86_64.rpm
MySQL-shared-compat-5.6.30-1.el7.x86_64.rpm
MySQL-test-5.6.30-1.el7.x86_64.rpm

2. 查看是否安装了mysql
rpm –qa |grep mysql

如有安装就先卸载：
rpm -e MySQL-client-community-5.1.40-0.rhel5
rpm -e MySQL-server-community-5.1.40-0.rhel5

3. 查看是否安装了mariadb
rpm -qa | grep mariadb

如有安装就先卸载
rpm -e --nodeps mariadb-libs-5.5.35-3.el7.x86_64
rpm -e --nodeps mariadb-5.5.35-3.el7.x86_64
rpm -e --nodeps mariadb-server-5.5.35-3.el7.x86_64

4.按顺序以下安装
yum install -y MySQL-shared-compat-5.6.30-1.el6.i686.rpm
yum install -y MySQL-server-5.6.30-1.el6.i686.rpm
yum install -y MySQL-client-5.6.30-1.el6.i686.rpm
yum install -y MySQL-devel-5.6.30-1.el6.i686.rpm
yum install -y MySQL-shared-5.6.30-1.el6.i686.rpm

5.yum install -y perl-Module-Install.noarch #安装perl Module

6./usr/bin/mysql_install_db #数据库初始化
安装后数据文件目录是在/var/lib/mysql/
配置文件是在/usr/my.cnf

7.chown -R mysql:mysql /var/lib/mysql #赋权限

8.service mysql start #开启mysql服务

9.mysqladmin -u root password '123456' #设置初次密码

10.mysql -uroot -p123456 #登录mysql

11.service mysql stop #关掉mysql服务

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以下为配置多实例：

12.mkdir -p /home/fuyouling/mutl_mysql/mysql_3307/mysql/ #创建数据文件目录

13./usr/bin/mysql_install_db --datadir=/home/fuyouling/mutl_mysql/mysql_3307/mysql --user=root #新实例初始化

14.修改/usr/my.cnf配置，修改为多实例模式
[mysqld_multi]
mysqld=/usr/bin/mysqld_safe
mysqladmin=/usr/bin/mysqladmin
user=root

[mysqld3306]
port=3306
socket=/var/lib/mysql/mysql.sock
pid-file=/var/lib/mysql/localhost.localdomain.pid
datadir=/var/lib/mysql/
user=root

[mysqld3307]
port=3307
socket=/home/fuyouling/mutl_mysql/mysql_3307/mysql/mysql.sock
pid-file=/home/fuyouling/mutl_mysql/mysql_3307/mysql/localhost.localdomain.pid
datadir=/home/fuyouling/mutl_mysql/mysql_3307/mysql/
user=root

15.启动新实例
mysqld_multi --defaults-extra-file=/usr/my.cnf start 3307

16.检查新实例是否生成
netstat -nltp或者ps -ef|grep mysql 查看是否有两个mysql端口或进程
也可以mysqld_multi report(这种方式不是很保险）

17.设置新实例密码
mysqladmin -uroot password '654321' -S /home/fuyouling/mutl_mysql/mysql_3307/mysql/mysql.sock

18.登录新实例
mysql -uroot -p654321 -S /home/fuyouling/mutl_mysql/mysql_3307/mysql/mysql.sock

19.检查新实例是否使用新的数据文件目录
show variables like '%datadir%'

20.关闭新实例
mysqladmin -uroot -p654321 -S /home/fuyouling/mutl_mysql/mysql_3307/mysql/mysql.sock shutdown

21.检查新实例是否关闭成功
netstat -nltp或者ps -ef|grep mysql