解决Mysql远程连接授权的问题

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安装好Mysql,从远程连接不上服务端，提示：

Host '220.181.149.27' is not allowed to connect to this MySQL server

解决方法：
1. 改表法

可能是你的帐号不允许从远程登陆，只能在localhost。这个时候只要在localhost的那台电脑，登入mysql后，更改 "mysql" 数据库里的 "user" 表里的 "host" 项，从"localhost"改称"%"
mysql -u root -pvmware

mysql>use mysql;

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

mysql>select host, user from user;

2. 授权法

例如，你想myuser使用mypassword从任何主机连接到mysql服务器的话。
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
如果你想允许用户myuser从ip为220.181.149.27的主机连接到mysql服务器，并使用mypassword作为密码
GRANT ALL PRIVILEGES ON *.* TO 'root'@'220.181.149.27' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON *.* TO 'root'@'220.181.149.27' IDENTIFIED BY '123456' WITH GRANT OPTION;