yum install wget  
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum makecache
yum install mysql
yum install mysql-devel
wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
yum -y localinstall mysql57-community-release-el7-11.noarch.rpm
yum install mysql-community-server
service mysqld restart
grep password /var/log/mysqld.log
set password for 'root'@'%' =password('password');