下面小编就为大家带来一篇完美解决mysql客户端授权后连接失败的问题。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧
在本地（192.168.1.152）部署好mysql环境，授权远程客户机192.168.1.%连接本机的mysql，在iptables防火墙也已开通3306端口。
如下：
mysql>
select host,user,passw
ord
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 |
+---------------+---------------+------------------------------------------------------------+
问题：
在客户机（比如192.168.1.20）上远程连接上面192.168.1.152机器的mysql，连接失败！
[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
解决：
是由于192.168.1.152的mysql里“host为localhost，user和password为空”这条语句导致的，删除这条即可解决问题！
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)
这样，授权连接的客户机就能成功连接了！
[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>
以上就是详解mysql客户端授权后连接失败的问题的解决办法的详细内容。