mysql 遠程訪問不行解決方法 Host is not allowed to connect to this MySQL server

mysql> update user set host = '%' where user = 'root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 1
mysql> select host,user from user;
+------------------+------+
| host             | user |
+------------------+------+
| %                | root |
| 127.0.0.1        | root |
| 192.168.33.110   | root |
| yunwei2.uid5a.cn | root |
+------------------+------+
4 rows in set (0.00 sec)

mysql> select host,user from user;
+------------------+------+
| host             | user |
+------------------+------+
| %                | root |
| 127.0.0.1        | root |
| 192.168.33.110   | root |
| yunwei2.uid5a.cn | root |
+------------------+------+
4 rows in set (0.00 sec)

mysql> grant all privileges on *.* to 'root'@'%' identified by 'uid5a827' with g                                                                                                 rant option;
Query OK, 0 rows affected (0.00 sec)

mysql> flush;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that                                                                                                  corresponds to your MySQL server version for the right syntax to use near '' at                                                                                                  line 1
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> grant all privileges on *.* to 'root'@'buy2.w98-e5.ezwebtest.com' identified by 'abcd1234' with grant option;
Query OK, 0 rows affected (0.00 sec)

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

參考文章

http://till.iteye.com/blog/115659

若是你想鏈接你的mysql的時候發生這個錯誤：

ERROR 1130: Host '192.168.1.3' is not allowed to connect to this MySQL server

解決方法：
1。 改表法。多是你的賬號不容許從遠程登錄，只能在localhost。這個時候只要在localhost的那臺電腦，登入mysql後，更改 "mysql" 數據庫裏的 "user" 表裏的 "host" 項，從"localhost"改稱"%"

mysql -u root -pvmwaremysql>use mysql;mysql>update user set host = '%' where user = 'root';mysql>select host, user from user;

2. 受權法。例如，你想myuser使用mypassword從任何主機鏈接到mysql服務器的話。

GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
若是你想容許用戶myuser從ip爲192.168.1.3的主機鏈接到mysql服務器，並使用mypassword做爲密碼
GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON *.* TO 'root'@'10.10.40.54' IDENTIFIED BY '123456' WITH GRANT OPTION;