数据库命令：

mysql -u root -p

查看现有用户权限：

SELECT User, Host FROM mysql.user;

授予远程访问权限：

允许从任何 IP 地址访问:

GRANT ALL PRIVILEGES ON *.* TO 'youruser'@'%' IDENTIFIED BY 'yourpassword' WITH GRANT OPTION;

FLUSH PRIVILEGES;

允许从特定 IP 地址访问：

GRANT ALL PRIVILEGES ON *.* TO 'youruser'@'113.65.80.163' IDENTIFIED BY 'yourpassword' WITH GRANT OPTION;

FLUSH PRIVILEGES;