yum install mysql
yum install mysql-server
wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
rpm -ivh mysql-community-release-el7-5.noarch.rpm
chmod -R 777 /var/lib/mysql
systemctl restart mysqld.service
mysql
alter user ‘root‘@‘localhost‘ identified by ‘123456‘;
原文：https://www.cnblogs.com/ingwant/p/11910771.html