转Mysql远程链接
1、进入mysql，创建一个新用户root,密码为root：

   格式：grant 权限 on 数据库名.表名 to 用户@登录主机 identified by "用户密码";
           grant select,update,insert,delete on *.* to root@192.168.1.12 identified by "root";

   原先数据表结构

    mysql> use mysql;
    Database changed
    mysql> select host,user,password from user;
    +-----------+------+-------------------------------------------+
    | host      | user | password                                  |
    +-----------+------+-------------------------------------------+
    | localhost | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
    +-----------+------+-------------------------------------------+

   执行上述语句后结果

    mysql> use mysql;
    Database changed
    mysql> select host,user,password from user;
    +--------------+------+-------------------------------------------+
    | host         | user | password                                  |
    +--------------+------+-------------------------------------------+
    | localhost    | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
    | 192.168.1.12 | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
    +--------------+------+-------------------------------------------+
    2 rows in set (0.00 sec)

the article below is more useful !

How Do I Enable Remote Access To MySQL Database Server?

by Vivek Gite on March 31, 2006 · 103 comments

By default remote access to MySQL database server is disabled for security reasons. However, some time you need to provide remote access to database server from home or a web server.
MySQL Remote Access

You need type the following commands which will allow remote connections.
Step # 1: Login Using SSH (if server is outside your data center)

First, login over ssh to remote MySQL database server:

ssh user@mysql.nixcraft.i

Step # 2: Edit my.cnf File

Once connected you need to edit the MySQL server configuration file my.cnf using a text editor such as vi.

    * If you are using Debian Linux file is located at /etc/mysql/my.cnf location
    * If you are using Red Hat Linux/Fedora/Centos Linux file is located at /etc/my.cnf location
    * If you are using FreeBSD you need to create a file /var/db/mysql/my.cnf

Edit /etc/my.cnf, run:
# vi /etc/my.cnf
Step # 3: Once file opened, locate line that read as follows

[mysqld]

Make sure line skip-networking is commented (or remove line) and add following line

bind-address=YOUR-SERVER-IP

For example, if your MySQL server IP is 65.55.55.2 then entire block should be look like as follows:

[mysqld]
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port