授权用户,你想root使用密码从任何主机连接到mysql服务器
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'admin123' WITH GRANT OPTION;
flush privileges;
如果你想允许用户root从ip为192.168.1.104的主机连接到mysql服务器
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.104' IDENTIFIED BY 'admin123' WITH GRANT OPTION;
flush privileges;
修改密码:mysql version >= 5.7
update mysql.user set authentication_string=password('admin123') where user='root' and Host = '%';
flush privileges;