开启MySQL远程访问权限 允许远程连接

admin

1、登陆mysql数据库   

[SQL] 纯文本查看 复制代码

  mysql -u root -p

   查看user表

[SQL] 纯文本查看 复制代码

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

可以看到在user表中已创建的root用户。host字段表示登录的主机，其值可以用IP，也可用主机名，
   (1)有时想用本地IP登录，那么可以将以上的Host值改为自己的Ip即可。
2、实现远程连接(授权法)
   将host字段的值改为%就表示在任何客户端机器上能以root用户登录到mysql服务器，建议在开发时设为%。   
   

[SQL] 纯文本查看 复制代码

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

   将权限改为ALL PRIVILEGES

[SQL] 纯文本查看 复制代码

    mysql> use mysql;
    Database changed
    mysql> grant all privileges  on *.* to root@'%' identified by "password";
    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.
3、实现远程连接（改表法）

[SQL] 纯文本查看 复制代码

use mysql;

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

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