Hi Maxim,

I have just tried - and it works - though more questions raise, how is the round-robin working (though, since I am using cache, I am not too concerned) Also, is there a limit to the number of maximum upstream servers within the block - from the documentation I don't see any indicative of having limits - but this is something I wont have to worry for a long time.


nginx.conf

#user nobody;
worker_processes 5;

#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;

pid /var/run/nginx.origin.pid;


events {
worker_connections 10000;
}

http {
include /etc/nginx.origin/mime.types;
default_type application/octet-stream;
recursive_error_pages on;

log_format main '-->$upstream_cache_status<-- | '
'$remote_addr - $remote_user [$time_local] "$request" '
'| Upstream_Address "$upstream_addr" '
'| upstream_response_time $upstream_response_time '
'| msec $msec request_time $request_time '
'| OriginServer $upstream_addr';

log_format cache '***$time_local '
'-->$upstream_cache_status<-- '
'Cache-Control: $upstream_http_cache_control '
'Expires: $upstream_http_expires '
'"$request" ($status) '
'"$http_user_agent" ';

#access_log logs/cache.log cache;

access_log /var/log/nginx/origin.nas.access.log main;

sendfile on;
keepalive_timeout 65;

# Hide version information
server_tokens off;

#headers
add_header Upstream-Host $upstream_addr;
add_header Cache-Status $upstream_cache_status;

#Include proxy config
client_body_buffer_size 512k;
proxy_connect_timeout 5;
proxy_read_timeout 60;
proxy_send_timeout 5;
proxy_buffer_size 16k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;

proxy_cache_path /etc/nginx.origin/cache/maincache/cache levels=1:2 keys_zone=nginx_cache:500m inactive=30m max_size=120g;
proxy_temp_path /etc/nginx.origin/cache/temp;

#proxy_cache_key "$host$request_uri$cookie_user";
proxy_cache_key "$request_uri";

proxy_cache_valid 200 302 60m;
proxy_cache_valid 404 0s;

upstream setA {
server 192.168.30.9:10666;
server 192.168.31.79:10666;
server 192.168.72.109:10666;
server 192.168.72.110:10666;
server 192.168.72.201:10666;
server 192.168.72.127:10666;
server 192.168.72.128:10666;
server 192.168.72.137:10666;
server 192.168.31.238:10666;
server 192.168.72.134:10666;
server 192.168.72.139:10666;
server 192.168.76.110:10666;
server 192.168.72.141:10666;
server 192.168.72.126:10666;
server 192.168.76.103:10666;
server 192.168.73.90:10666;
server 192.168.73.91:10666;
server 192.168.38.88:10666;
server 192.168.38.89:10666;
}

server {
listen haproxy-local:10777;
server_name localhost;

#This setting has to sit here in order to support
# more than
recursive_error_pages on;
# UNCOMMENT BELOW TO ENABLE CACHE
#proxy_cache nginx_cache;
proxy_cache_valid 200 304 12h;
expires 1d;

location /
{
access_log /var/log/nginx/origin.handler.f.proxy_access.log main;
#If 404, check next server set. If last, it should go to error page.
#error_page 404 502 503 504 /404.html;
#error_page 404 /404.html;
proxy_pass http://setA;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 60s;
proxy_next_upstream error timeout http_500 http_502 http_503 http_504 http_404;
proxy_intercept_errors on;

}

error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}

location = /404.html {
root html;
}

location = /crossdomain.xml {
access_log /var/log/nginx/origin.handler.crossdomain.proxy_access.log main;
root html;
}
}


}