# 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成功安装之后重启mysql服务
# service mysqld restart
初次登陆是没有密码的
设置mysql密码：mysql> set password for ‘root’@‘localhost’ = password('mypasswd');
exit;
即可