ERROR 1130: Host '' is not allowed to connect to thisMySQL server

今天1网友求助，说自己PHPmyadmin能够正常连接数据库，使用sqlyog报错：

ERROR 1130: Host '172.27.214.1' is not allowed to connect to thisMySQL server

root case:MySQL默认全部帐号不同意从远程登陆。仅仅能在localhost

解决方法： 

1,改动user表

mysql -u root -p

mysql>use mysql;

mysql>update user set host = '172.27.241.1' where user ='root';

mysql>flush privileges;

2.指定授权

mysql -u root -p

mysql>use mysql;

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'172.27.241.1' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

mysql>flush privileges;

注意：

1.精准授权，即那个账号，哪台主机。须要哪种权限。必须写明。最好不要泛授权；

2.记着运行完每条命令要flush privileges;