mysql_外网访问

1，mysql 数据库，user表设置，

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

flush privilesges;

2,/etc/mysql/my.cnf

bind-address           = 0.0.0.0

3:grant all privileges on *.*  to  'root'@'%'  identified by 'root' with grant option;

4,flush privileges;