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
systemctl status mysqld.service
grep "password" /var/log/mysqld.log
mysql -uroot -p
ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';
-- 查看密码策略
show variables like '%password%';
grant all privileges on *.* to 'root'@'192.168.0.1' identified by 'password' with grant option;
flush privileges;
exit;