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安装
yum install mysql mysql-server

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开启服务
service mysqld start

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修改密码
mysqladmin -u root password '123456'

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登录
mysql -uroot -p

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删除无效用户
delete from user where password='';


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设置root远程登录
update user set host ='%' where user='root';

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刷新权限
flush privileges;

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关闭防火墙
临时关闭service iptables stop
永久关闭chkconfig iptables off
