Error while connecting to apache from nginx running on same machine

[lima]

Hi,
This is our nginx configuration setup. 

--------------------------------------------------------------------------------------
http {
    include       mime.types;

    gzip  on;
    gzip_http_version   1.1;
    gzip_proxied     expired no-cache no-store private auth;
    gzip_types       text/plain application/xml text/css
application/x-javascript text/xml application/javascript
text/javascript;
    gzip_disable     "MSIE [1-6]\.";

    autoindex off;
    ssi off;
    server_tokens off;

    log_format  main  '$remote_addr [$time_local] - "$request" - '
                      '$status - $body_bytes_sent - "$http_referer"';

    log_format lb_log '$remote_addr [$time_local] - "$request" - $status
- '
                      'worker_addr $upstream_addr - '
                      'worker_status $upstream_status - '
                      'worker_response_time $upstream_response_time - '
                      'total_processing_time $request_time - '
                      'content_type $upstream_http_content_type';

    log_format doc_log '$remote_addr [$time_local] - "$request" -
$status - '
                      'worker_addr $upstream_addr - '
                      'worker_status $upstream_status - '
                      'worker_response_time $upstream_response_time - '
                      'total_processing_time $request_time - '
                      'content_type $upstream_http_content_type';


    access_log  logs/access.log  main;
    error_log logs/error.log;

    sendfile        on;
    keepalive_timeout  60;

    proxy_ssl_session_reuse on;

    upstream loadbalancer {
        server server1-ip:443  weight=1  max_fails=5 fail_timeout=3m;
        server server2-ip:443 weight=1  max_fails=5 fail_timeout=3m;
    }
    upstream docproxy {
        server 127.0.0.1:7443;
    }

    server {
        listen       443 ssl;
        server_name  lb.abcd.net;

        location ~ ^/documents/(.*)(jpg|jpeg|gif|png|txt|pdf|html|htm){
           root   /home;
           access_log logs/doc_access.log doc_log;
        }

        location ~* ^.+.(jpg|jpeg|gif|png|ico|css|txt|js)$ {
            expires 24h;
            add_header Cache-Control public;
            root   media;
        }

        ssl_certificate     
/root/Apache_New_SSL_Keys/lendingstream.co.uk.crt;
        ssl_certificate_key 
/root/Apache_New_SSL_Keys/lendingstream.key.nopass;
        ssl_session_timeout  3m;
        ssl_protocols  SSLv3;
        ssl_ciphers  HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers   on;

        proxy_redirect / /;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_read_timeout 360s;

        location ~ ^/documents/ {
           proxy_pass https://docproxy;
           access_log logs/doc_access.log doc_log;
        }
        location / {
           proxy_pass https://loadbalancer;
           access_log logs/lb_access.log lb_log;
        }

        error_page  403 /403.html;
        error_page  404 /404.html;
        error_page   500 502 503 504  /500.html;

        location ~ ^/(403.html|404.html|500.html)$ {
            root html;
        }
    }
}

--------------------------------------------------------------------------------------------

Here, we will forward all the requests except documents to LB, which in
turn send to either server1 or server2. The document related requests
will be proxy forwarded to apache running in the same machine at 7443
port. But, here comes the problem that when it is sending any request to
apache it is giving 500 error. In apache logs, it's been logged as
[error] Hello. The apache configurations are:

httpd.conf is,
------------------------------------------------------------------------------------------
ServerRoot "/usr/local/apache2"
PidFile logs/httpd.pid
Listen 80
ServerTokens ProductOnly
ServerSignature Off

###### Loaded all modules which are required
LoadModule *****.so
###### Loaded all modules which are required

<IfModule !mpm_netware_module>
<IfModule !mpm_winnt_module>
    User USER
    Group GROUP
</IfModule>
</IfModule>

DocumentRoot "/usr/local/apache2/htdocs"

<Directory />
    Options -Indexes +FollowSymLinks
    AllowOverride None
    Order deny,allow
    Deny from all
</Directory>

<Directory "/usr/local/apache2/htdocs">
    Options -Indexes +FollowSymLinks
    AllowOverride None
    Order allow,deny
    Allow from all
</Directory>

ErrorLog "logs/error_log"
LogLevel notice

<IfModule ssl_module>
    SSLRandomSeed startup builtin
    SSLRandomSeed connect builtin
</IfModule>

<VirtualHost *:80>
    Alias /documents /home/documents
    <Directory /home/documents>
	Order deny,allow
	Allow from all
    </Directory>

    WSGIScriptAlias / apache/django.wsgi
    <Directory "apache">
	Order allow,deny
	Allow from all
    </Directory>
</VirtualHost>


---------------------------------------------------------------------------------
and the httpd-ssl.conf is,
---------------------------------------------------------------------------------

LoadModule ssl_module modules/mod_ssl.so
LoadModule wsgi_module modules/mod_wsgi.so

Listen 7443
AddType application/x-x509-ca-cert .crt
AddType application/x-pkcs7-crl    .crl

SSLPassPhraseDialog  builtin

SSLSessionCache       
"shmcb:/usr/local/apache2/logs/ssl_scache(512000)"
SSLSessionCacheTimeout  15
SSLMutex  "file:/usr/local/apache2/logs/ssl_mutex"


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Please help me in resolving this as this is very crucial and urgent for
us. Thanks for replying....

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,227341,227420#msg-227420