报错:1130-host ... is not allowed to connect to this MySql server

Linux安装完mysql之后，用Navicat工具连接报错：

1130-host '' is not allowed to connect to this MySql server

解决方法：

可能是你的帐号不允许从远程登陆，只能在localhost。这个时候只要在localhost的那台电脑，登入mysql后，更改 "mysql" 数据库里的 "user" 表里的 "host" 项，从"localhost"改称"%"

[root@localhost ~]# mysql -u root -p

mysql>use mysql;

mysql>update user set host = '%' where user = 'root' and host = 'localhost';

Query OK, 0 rows affected (0.00 sec)

Rows matched: 0 Changed: 0 Warnings: 0

mysql>select host, user from user;

+-----------------------+------+

| host | user |

+-----------------------+------+

| % | |

| % | root |

| 127.0.0.1 | root |

| ::1 | root |

| localhost.localdomain | |

| localhost.localdomain | root |

+-----------------------+------+

6 rows in set (0.00 sec)

OK，解决。

其他方法待验证。