使用yum安装MySQL5.7
wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm yum -y install mysql57-community-release-el7-10.noarch.rpm yum -y install mysql-community-server systemctl start mysqld.service grep "password" /var/log/mysqld.log mysql -uroot -p set global validate_password_policy=0; set global validate_password_length=1; ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password'; yum -y remove mysql57-community-release-el7-10.noarch vi /etc/my.conf [mysqld] validate_password=OFF