百分请教~ apache2.2+tomcat5出现502Proxy Error错误~

[zclwy1314]

前几天网站服务器换ip，进行一番修改后能正常访问。可这两天一打开网站主页就报下面的错误：
Proxy Error
Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /.

Reason: DNS lookup failure for:www.xxx.com

打开apache的error.log
看到
[Tue Oct 13 15:45:16 2009] [error] [client 220.181.94.213] proxy: DNS lookup failure for: www.***.com returned by /robots.txt
[Tue Oct 13 15:45:58 2009] [error] [client 65.55.106.232] proxy: DNS lookup failure for: www.***.com returned by /cms/healthLife/Life/Career_Health/0043.html
[Tue Oct 13 15:46:19 2009] [error] [client 65.55.208.148] proxy: DNS lookup failure for: www.***.com returned by /cms/healthLife/Life/Career_Health/0044.html
[Tue Oct 13 15:48:04 2009] [error] [client 65.55.208.140] proxy: DNS lookup failure for: www.***.com returned by /robots.txt
[Tue Oct 13 15:48:18 2009] [error] [client 220.181.94.213] proxy: DNS lookup failure for: www.***.com returned by /robots.txt
这样的错误，不知道到底是哪出错了~
望指教~

[zclwy1314]

怎么看出来的？

[BeenZ]

这样的日志大概有多少个?如果很多的话肯定就是了

[BeenZ]

如果很少的话那就是单纯的http代理出错,修改下配置应该可以解决

[zclwy1314]

[Tue Oct 13 16:08:24 2009] [error] [client 95.108.150.235] proxy: DNS lookup failure for: www.***.com returned by /
[Tue Oct 13 16:08:39 2009] [error] [client 95.108.150.235] proxy: DNS lookup failure for: www.***.com returned by /
[Tue Oct 13 16:08:53 2009] [error] [client 65.55.207.53] proxy: DNS lookup failure for: www.***.com returned by /robots.txt
[Tue Oct 13 16:09:07 2009] [error] [client 95.108.150.235] proxy: DNS lookup failure for: www.***.com returned by /
[Tue Oct 13 16:09:35 2009] [error] [client 202.160.178.187] proxy: DNS lookup failure for: www.***.com returned by /cms/ekang/vocational_Info/index.html
[Tue Oct 13 16:11:05 2009] [error] [client 65.55.209.99] proxy: DNS lookup failure for: www.***.com returned by /robots.txt
[Tue Oct 13 16:11:23 2009] [error] [client 65.55.209.99] proxy: DNS lookup failure for: www.***.com returned by /cms/ekang/scientificDiet/Food/Express/044.html
[Tue Oct 13 16:11:45 2009] [error] [client 65.55.106.206] proxy: DNS lookup failure for: www.***.com returned by /cms/ekang/modernLife/Encyclopaedia/Modern_Show/0018.html
[Tue Oct 13 16:13:55 2009] [error] [client 65.55.106.132] proxy: DNS lookup failure for: www.***.com returned by /cms/system/modules/com.westerasoft.cms.ekang/pages/articles_list_page.jsp
[Tue Oct 13 16:14:09 2009] [error] [client 65.55.207.21] proxy: DNS lookup failure for: www.***.com returned by /cms/system/modules/com.westerasoft.cms.ekang/pages/articles_list_page.jsp
[Tue Oct 13 16:14:40 2009] [error] [client 65.55.207.51] proxy: DNS lookup failure for: www.***.com returned by /cms/ekang/scientificDiet/index.html
[Tue Oct 13 16:15:25 2009] [error] [client 65.55.207.21] proxy: DNS lookup failure for: www.***.com returned by /cms/system/modules/com.westerasoft.cms.ekang/pages/articles_list_page.jsp
[Tue Oct 13 16:16:48 2009] [error] [client 220.181.7.94] proxy: DNS lookup failure for: www.***.com returned by /
这是截至目前的记录，应该说不是太多，但我也觉得不正常，因为这个网站访问量不搞~

[BeenZ]

如果遭受ddos攻击的话每天记录会成千上万的,至少也有好几百个,你检查下http代理的配置

[zclwy1314]

配置应该没错啊~ BeenZ能否发一个标准的配置~~

[zclwy1314]

继续顶~都睡觉咯 ？

[lk_cool]

[Quote=引用 13 楼 lk_cool 的回复:]
我觉得是你转发后的url不正确。
[/Quote]

我是觉得可能你写的ProxyPass中可能有错误，导致转发用的url在tomcat那解析不了。
猜的。你看看来。

[zclwy1314]

谢谢二位了 问题解决了 是路由器的设置的问题，现在好了 谢谢了

[zclwy1314]

早上好

[lk_cool]

我觉得是你转发后的url不正确。

[zclwy1314]

早上好 小地主
转发的url不正确，详细说下啊~

[BeenZ]

昨天忙死了,把这事儿给忘了..

把你的Apache 的配置文件发来看看

[BeenZ]

主要是ProxyPass 部分

[zclwy1314]

beenz 加我吧 76978240

[BeenZ]

QQ端口加腾讯IP加QQ关键字网页被路由封杀中...

[zclwy1314]

晕 msn呢？

[lk_cool]

apache + tomcat你是不是用了ajp连接的？

你的ProxyPass怎么写的？

[zclwy1314]

这个不是我写的
不太熟悉
应该是这样的吧~
ProxyPass /bbs7/images/ !
ProxyPass /cas/images/ !
ProxyPass /casin/images/ !
ProxyPass /hos/images/ !

[XiaoNvRen11]

你是怎么解决的，我的电脑也出现了这样的问题