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

查看user表

mysql> use mysql;
Database changed
mysql> select host,user,password from user;
+--------------+------+-------------------------------------------+
| host | user | password |
+--------------+------+-------------------------------------------+
| localhost | root | *72703F0F2126C961A65703D56445707C84BE4859|
| 192.168.1.100 | root | *72703F0F2126C961A65703D56445707C84BE4859 |
+--------------+------+-------------------------------------------+
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，

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

将权限改为ALL PRIVILEGES

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 | 72703F0F2126C961A65703D56445707C84BE4859 |
| 192.168.1.100 | root |72703F0F2126C961A65703D56445707C84BE4859 |
| % | root | *72703F0F2126C961A65703D56445707C84BE4859 |
+--------------+------+-------------------------------------------+
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）

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

这样在远端就可以通过root用户访问Mysql.