转：http://www.cnblogs.com/live41/archive/2013/04/02/2995178.html
设置MySQL允许外网访问
1.修改配置文件
sudo vim /etc/mysql/my.cnf
把bind-address参数的值改成你的内/外网IP或0.0.0.0,或者直接注释掉这行.
2.登录数据库
mysql -u root -p
输入密码
mysql> use mysql;
3.查询host
mysql> select user,host from user;
4.创建host
如果没有"%"这个host值,就执行下面这两句:
mysql> update user set host='%' where user='root';
mysql> flush privileges;
5.授权用户
任意主机以用户root和密码mypwd连接到mysql服务器
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'mypwd' WITH GRANT OPTION;
mysql> flush privileges;
IP为192.168.1.102的主机以用户myuser和密码mypwd连接到mysql服务器
mysql> GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.102' IDENTIFIED BY 'mypwd' WITH GRANT OPTION;
mysql> flush privileges;
*********以下转载http://www.cnblogs.com/qq78292959/archive/2012/05/17/2505832.html***************
mysql的root账户,我在连接时通常用的是localhost或127.0.0.1,公司的测试服务器上的mysql也是localhost所以我想访问无法访问,测试暂停.
解决方法如下:
1,修改表,登录mysql数据库,切换到mysql数据库,使用sql语句查看"select host,user from user ;"
mysql -u root -pvmwaremysql>use mysql;
mysql>update user set host = '%' where user ='root';
mysql>select host, user from user;
mysql>flush privileges;
注意:最后一句很重要,目的是使修改生效.如果没有写,则还是不能进行远程连接.
2,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;