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
如果你想連接你的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。可能是你的帳號不允許從遠程登陸，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. 授權法。例如，你想myuser使用mypassword從任何主機連接到mysql服務器的話。
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
如果你想允許用戶myuser從ip爲192.168.1.3的主機連接到mysql服務器，並使用mypassword作爲密碼
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;