mysql -uroot -p
use mysql
select host,user from user;#查看授权用户
CREATE USER 'song'@'%' IDENTIFIED BY '*****';#创建新的用户
GRANT ALL PRIVILEGES ON *.* TO 'song'@'%' IDENTIFIED BY '***' WITH GRANT OPTION;#给新用户授予所有ip访问权限
flush privileges;#刷新数据库权限配置
sudo service mysql restart;#重启mysql服务