从MySQL官网下载源再用yum安装:

# wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
# rpm -ivh mysql-community-release-el7-5.noarch.rpm
# yum install mysql-community-server

重新启动
# service mysqld restart

为数据库root用户设置密码: usr/bin/mysqladmin -u root password 123456



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