默认情况下，mysql只允许本地登录，如果要开启远程连接，则需要修改/etc/mysql/my.conf文件。

开启MySQL远程访问权限 允许远程连接
1、登陆mysql数据库
mysql -u root -p

mysql> use mysql;
Database changed
mysql> grant all privileges on . to root@'%' identified by "password";

   grant all privileges on *.*  to root@'%' identified by '123456.' ;

Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> select host,user,password from user;
+--------------+------+-------------------------------------------+
| host | user | password |
+--------------+------+-------------------------------------------+
| localhost | root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |
| 192.168.1.1 | root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |
| % | root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |
+--------------+------+-------------------------------------------+
3 rows in set (0.00 sec)

这样机器就可以以用户名root密码root远程访问该机器上的MySql.