《MYSQL教程完美解決mysql客戶端授權(quán)后連接失敗的問題》要點：
本文介紹了MYSQL教程完美解決mysql客戶端授權(quán)后連接失敗的問題，希望對您有用。如果有疑問，可以聯(lián)系我們。

MYSQL學(xué)習(xí)在本地(192.168.1.152)部署好mysql環(huán)境,授權(quán)遠程客戶機192.168.1.%連接本機的mysql,在iptables防火墻也已開通3306端口.

MYSQL學(xué)習(xí)如下：

MYSQL學(xué)習(xí)mysql> select host,user,password from mysql.user;
+--------------+-----------------+---------------------------------------------------------+
| host | user | password |
+--------------+-----------------+----------------------------------------------------------+
| localhost | root | |
| fdm1 | root | |
| 127.0.0.1 | root | |
| localhost | | |
| fdm1 | | |
| 192.168.1.% | db_hqsb | *DFC9DC16B13651A95ECEC3A26E07D244431B55C9 |
| 192.168.1.% | db_ro_hqsb | *2C0B0DD50595BB40879110437BEEF026D019DFB7 |
| 192.168.1.% | db_jkhwuser | *2C0B0DD50595BB40879110437BEEF026D019DFB7 |
| 192.168.1.25| slave | *EE52B8EACB3CCD13624273AD6B5CDA52B9B53EB7 |
| 192.168.1.% | tech_db_user | *6053E57C7B61043DC2C6B4E3291D5F61CCC23F5C |
| 192.168.1.% | game_db_user| *05EA4D71C9A1273ECF3E24E6323F7175AE45C366 |
| localhost | zabbix | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
+---------------+---------------+------------------------------------------------------------+

MYSQL學(xué)習(xí)問題：

MYSQL學(xué)習(xí)在客戶機(比如192.168.1.20)上遠程連接上面192.168.1.152機器的mysql,連接失敗!

MYSQL學(xué)習(xí)
[root@huanqiu ~]# mysql -udb_ro_hqsb -h 192.168.1.152 -pmhxzkhl0802xqsjdb
ERROR 1130 (HY000): Host '192.168.1.20' is not allowed to connect to this MySQL server

MYSQL學(xué)習(xí)解決：

MYSQL學(xué)習(xí)是由于192.168.1.152的mysql里“host為localhost,user和password為空”這條語句導(dǎo)致的,刪除這條即可解決問題!

MYSQL學(xué)習(xí)mysql> delete from mysql.user where host="localhost" and user="";
Query OK, 1 row affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

MYSQL學(xué)習(xí)這樣,授權(quán)連接的客戶機就能成功連接了!

MYSQL學(xué)習(xí)
[root@huanqiu ~]# mysql -uxqsj_db_ro_user -h 192.168.1.152 -pmhxzkhl0802xqsjdb
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 28
Server version: 5.1.73 Source distribution
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>

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