MySQL反解析出现could not be resolved: Name or service not known

错误日志有类似警告：

120119 16:26:04 [Warning] IP address '192.168.1.10' could not be resolved:
Name or service not known

120119 16:26:04 [Warning] IP address '192.168.1.14' could not be resolved:
Name or service not known

120119 16:26:04 [Warning] IP address '192.168.1.17' could not be resolved:
Name or service not known

通过show processlist发现大量类似如下的连接：

|592|unauthenticated user|192.168.1.10:35320|NULL|Connect| |login|NULL|

|593|unauthenticated user|192.168.1.14:35321|NULL|Connect| |login|NULL|

|594|unauthenticated user|192.168.1.17:35322|NULL|Connect| |login|NULL|

修改配置文件添加并需要重启：

[mysqld]

skip-name-resolve

skip-name-resolve 参数的作用：不再进行反解析(ip不反解成域名)，这样可以加快数据库的反应时间。