Qustion for reverse-proxy for virtual host

quan nexthop quan.nexthop at gmail.com
Sun Oct 11 22:43:47 MSD 2009


HI:

Let me give a summary for my question, it is a long descrption.


1) My question is :
I try to setup the NGINX as a reverse-proxy to protect a WebServer. The
topology is a VirtualHost.
abc.com |-----------[nginx reverse proxy] ------- |virtualhost] ----/abc
directory
123.com|
        |--/123
 directory

[note] the virtualhost port is 80

2) I got a configuration as the following:
   Add these in NGINX.conf
   server {
       server_name  abc.com;
       location / {
           proxy_pass  http://123.com/abc/;
       }
   }
   server {
       server_name  def.com;
       location / {
           proxy_pass  http://123.com/def/;
       }
   }

3) When I do according to the above the configuration, I can not access the
VirtualHost.
I sniff and get the following packet(in Server's side)

GET /abc.com HTTP/1.0
Host: abc.com
X-Real-IP: 192.168.2.169
X-Forwarded-For: 192.168.2.169
Connection: close
Accept: */*
Accept-Language: zh-cn
Pragma: no-cache
If-Modified-Since: Sun, 11 Oct 2009 08:53:36 GMT
If-None-Match: "c8752c52504aca1:2b3"
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
Proxy-Connection: Keep-Alive

HTTP/1.1 404 Not Found
Content-Length: 1308
Content-Type: text/html
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
Date: Sun, 11 Oct 2009 09:19:44 GMT
Connection: close
----------------------------------------------------------------------------------------------------------
Case 2. Access from 192.168.2.169->192.168.10.169(web server) *BYPASS* the
NGINX revers proxy

GET / HTTP/1.1
Accept: */*
Accept-Language: zh-cn
Accept-Encoding: gzip, deflate
If-Modified-Since: Sun, 11 Oct 2009 08:53:36 GMT
If-None-Match: "c8752c52504aca1:2b3"
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
Host: abc.com
Connection: Keep-Alive
HTTP/1.1 200 OK
Content-Length: 248
Content-Type: text/html
Content-Location: http://abc.com/index.htm
Last-Modified: Sun, 11 Oct 2009 08:53:36 GMT
Accept-Ranges: bytes
ETag: "c8752c52504aca1:2c1"
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
Date: Sun, 11 Oct 2009 09:19:34 GMT
--------------------------------------------------------------------------------------------
At present, I still don't know how to configure Reverse-Proxy for
VirtualHost.

please give me a help.

thanks
NextHop



On 10/11/09, Igor Sysoev <is at rambler-co.ru> wrote:
>
> On Sun, Oct 11, 2009 at 05:55:35PM +0800, quan nexthop wrote:
>
> > Sorry later feedback because of the bussiness trip.
> >
> > I configured it according to Igor Sysoev's advice, but it failed.
> > I sniff in the webserver's side, I found the request message is stranger.
> > ----------------------------------------------------------------
> > Case1:  Access from 192.168.2.169->192.168.10.169(web server) *VIA* NGINX
> > reverse proxy.
> >
> > GET /abc.com HTTP/1.0
> > Host: abc.com
> > X-Real-IP: 192.168.2.169
> > X-Forwarded-For: 192.168.2.169
> > Connection: close
> > Accept: */*
> > Accept-Language: zh-cn
> > Pragma: no-cache
> > If-Modified-Since: Sun, 11 Oct 2009 08:53:36 GMT
> > If-None-Match: "c8752c52504aca1:2b3"
> > User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
> > Proxy-Connection: Keep-Alive
> >
> > HTTP/1.1 404 Not Found
> > Content-Length: 1308
> > Content-Type: text/html
> > Server: Microsoft-IIS/6.0
> > X-Powered-By: ASP.NET
> > Date: Sun, 11 Oct 2009 09:19:44 GMT
> > Connection: close
> >
> ----------------------------------------------------------------------------------------------------------
> > Case 2. Access from 192.168.2.169->192.168.10.169(web server) *BYPASS*
> the
> > NGINX revers proxy
> >
> > GET / HTTP/1.1
> > Accept: */*
> > Accept-Language: zh-cn
> > Accept-Encoding: gzip, deflate
> > If-Modified-Since: Sun, 11 Oct 2009 08:53:36 GMT
> > If-None-Match: "c8752c52504aca1:2b3"
> > User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
> > Host: abc.com
> > Connection: Keep-Alive
> >
> > HTTP/1.1 200 OK
> > Content-Length: 248
> > Content-Type: text/html
> > Content-Location: http://abc.com/index.htm
> > Last-Modified: Sun, 11 Oct 2009 08:53:36 GMT
> > Accept-Ranges: bytes
> > ETag: "c8752c52504aca1:2c1"
> > Server: Microsoft-IIS/6.0
> > X-Powered-By: ASP.NET
> > Date: Sun, 11 Oct 2009 09:19:34 GMT
> >
> -----------------------------------------------------------------------------------------------------
> > The case 1 is failed. If I bypass the NGINX revers-proxy, it success.
> > I marked with RED, there are some difference. I can not dig into deep.
> > please help me for the issue.
>
> Then I do not understand, what you meant by this:
>
> abc.com |----[nginx reverse proxy] -- |virtualhost] --/abc directory
> 123.com|
> |--/123  directory
>
> > I pasted the configuration as following:
> >
> -------------------------------------------------------------------------------
> >  47   server {
> >  48       listen 8080;
> >  49       server_name abc.com;
> >  50       access_log /var/log/nginx/access.log;
> >  51
> >  52       location / {
> >  53           proxy_pass http://192.168.10.169/abc.com;
> >  54           proxy_redirect default;
> >  55           proxy_set_header Host $host;
> >  56           proxy_set_header  X-Real-IP  $remote_addr;
> >  57           proxy_set_header X-Forwarded-For
> $proxy_add_x_forwarded_for;
> >  58           client_max_body_size 50m;
> >  59           client_body_buffer_size 256k;
> >  60      }
> >  61  }
> >  62  server {
> >  63       listen 8080;
> >  64       server_name def.com;
> >  65       access_log /var/log/nginx/access.log;
> >  66
> >  67       location / {
> >  68           proxy_pass http://192.168.10.169/def.com;
> >  69           proxy_redirect default;
> >  70           proxy_set_header Host $host;
> >  71           proxy_set_header  X-Real-IP  $remote_addr;
> >  72           proxy_set_header X-Forwarded-For
> $proxy_add_x_forwarded_for;
> >  73           client_max_body_size 50m;
> >  74           client_body_buffer_size 256k;
> >  75     }
> >  76  }
> >
> >
> > thanks
> > NextHop
> >
> >
> >
> >
> > On 10/6/09, Igor Sysoev <is at rambler-co.ru> wrote:
> >
> > > On Mon, Oct 05, 2009 at 04:00:23PM +0800, quan nexthop wrote:
> > >
> > > > Hi all:
> > > >
> > > > I try to setup the NGINX as a reverse-proxy to protect several
> > > webservers,
> > > > which lots of websites are running on. Yes, it is a virtual host :)
> > > >
> > > > abc.com |-----------[nginx reverse proxy] ------- |virtualhost]
> ----/abc
> > > > directory
> > > > 123.com|
> > > > |--/123  directory
> > > >
> > > > [note] the virtualhost port is 80.
> > > >
> > > > I go through the wiki.nginx.net and can not find any configuration
> > > related
> > > > with the topology.
> > > >
> > > > Any one can paste a configuration for such case?
> > > > how can I distinguish the different server in one listening port?
> > >
> > > Probably you need
> > >
> > >    server {
> > >        server_name  abc.com;
> > >        location / {
> > >            proxy_pass  http://123.com/abc/;
> > >        }
> > >    }
> > >
> > >    server {
> > >        server_name  def.com;
> > >        location / {
> > >            proxy_pass  http://123.com/def/;
> > >        }
> > >    }
> > >
> > >
> > > --
> > > Igor Sysoev
> > > http://sysoev.ru/en/
> > >
> > >
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>
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