mysql error：Host is not allowed to connect to this MySql server

访问虚拟机中Mysql时出现如下错误：

原因：该mysql用户不允许远程登录

解决：授权

1> 允许用户从任何主机连接到mysql server

GRANT ALL PRIVILEGES ON *.* TO 'username'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;

2> 允许用户从指定IP访问mysql server

其中，host为特定IP地址

GRANT ALL PRIVILEGES ON *.* TO 'username'@'host' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;

3> 允许用户从特定IP访问mysql server指定数据库

其中，host为特定IP地址

GRANT ALL PRIVILEGES ON dbname.* TO 'username'@'host' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;