apache的http代理出现 502 Proxy Error
时间:2016-12-06 13:41 来源:linux.it.net.cn 作者:IT
前不久刚部署好的网站,忽然访问报错提示错误
引用
Http 502 Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /.
Reason: Error reading from remote server
看了半天也没看出个所以然来, 刚刚还好好的呢!过了一会网站又能打开了....
查看了一下apache的access_log。发现
引用
.....Get / HTTP/1.0....
这是ie5.5以下的版本访问过。所以又找来台ie5.5(挺难整,这年头这玩意少了!!)访问了一下,然后出错。在用别的机器访问错误还有。在刷新了一会又好了!
就这个问题Google了一下发现是mod_proxy的事,又G了一下他的文档
http://httpd.apache.org/docs/2.3/mod/mod_proxy.html
找到了这一段话
引用
For circumstances where mod_proxy is sending requests to an origin server that doesn't properly implement keepalives or HTTP/1.1, there are two environment variables that can force the request to use HTTP/1.0 with no keepalive. These are set via the SetEnv directive.
These are the force-proxy-request-1.0 and proxy-nokeepalive notes.
译了一下大概是这意思(不是我译的)
引用
当mod_proxy向一个没有正确实现持久连接(KeepAlive)或HTTP/1.1的原始服务器发送请求的时候,可以通过设置两个环境变量来发送不带持久连接(KeepAlive)的HTTP/1.0请求。这两个变量是通过SetEnv指令设置的。
以下是force-proxy-request-1.0和proxy-nokeepalive的例子:
-
<Location /buggyappserver/>
-
ProxyPass http://buggyappserver:7001/foo/
-
SetEnv force-proxy-request-1.0 1
-
SetEnv proxy-nokeepalive 1
-
</Location>
最后在我的httpd.conf的VirtualHost里加上了上面的两行设置
-
<VirtualHost *:80>
-
JkMount /hr/servlet/* worker1
-
JkMount /hr/*.jsp worker1
-
JkMount /hr/*.do worker1
-
ServerAdmin njgnini@163.com
-
ServerName www.iteye.com
-
ServerAlias www.iteye.com.cn
-
RewriteEngine On
-
RewriteRule ^/$ /hr/ [R,P]
-
-
SetEnv force-proxy-request-1.0.1
-
SetEnv proxy-nokeepalive 1
-
</VirtualHost>
重启apache,在拿ie5.5访问O了
(责任编辑:IT)
前不久刚部署好的网站,忽然访问报错提示错误
引用
Http 502 Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /. Reason: Error reading from remote server 看了半天也没看出个所以然来, 刚刚还好好的呢!过了一会网站又能打开了.... 查看了一下apache的access_log。发现
引用
.....Get / HTTP/1.0....
这是ie5.5以下的版本访问过。所以又找来台ie5.5(挺难整,这年头这玩意少了!!)访问了一下,然后出错。在用别的机器访问错误还有。在刷新了一会又好了!就这个问题Google了一下发现是mod_proxy的事,又G了一下他的文档 http://httpd.apache.org/docs/2.3/mod/mod_proxy.html 找到了这一段话
引用
For circumstances where mod_proxy is sending requests to an origin server that doesn't properly implement keepalives or HTTP/1.1, there are two environment variables that can force the request to use HTTP/1.0 with no keepalive. These are set via the SetEnv directive.
译了一下大概是这意思(不是我译的)These are the force-proxy-request-1.0 and proxy-nokeepalive notes.
引用
当mod_proxy向一个没有正确实现持久连接(KeepAlive)或HTTP/1.1的原始服务器发送请求的时候,可以通过设置两个环境变量来发送不带持久连接(KeepAlive)的HTTP/1.0请求。这两个变量是通过SetEnv指令设置的。
以下是force-proxy-request-1.0和proxy-nokeepalive的例子:
最后在我的httpd.conf的VirtualHost里加上了上面的两行设置
重启apache,在拿ie5.5访问O了 (责任编辑:IT) |