nginx-proxy.conf.erb

<% if @backends.length > 0 %>
upstream <%= @formation %>-backends {
	<% if @algorithm == "least_conn" %>
	# route requests based on least number of connections
	# see http://nginx.org/en/docs/http/ngx_http_upstream_module.html#least_conn
	least_conn;
	<% elsif @algorithm == "ip_hash" %>
	# route requests to the same web worker based on hash of their IP addr
	# see http://nginx.org/en/docs/http/ngx_http_upstream_module.html#ip_hash
	ip_hash;	
	<% else %>
	# route requests using a simple round robin scheme
	<% end %>
	
	# web worker format: public_fqdn:public_port
	<% @backends.each do |backend| %>
	server <%= backend %>;
	<% end %>
}
<% end %>

server {
	listen <%= @port %> default_server;

	# Make site accessible from http://localhost/
	server_name localhost;

	<% if @backends.length > 0 %>
	location / {
		proxy_pass http://<%= @formation %>-backends;
		<% if @firewall %>
		# Nginx Anti XSS & SQL Injection (Web Application Firewall)
		# see https://code.google.com/p/naxsi/ for more info
		include /etc/nginx/naxsi.rules;
		<% end %>
	}
	<% end %>

	# TODO: allow configurable error pages
	
	#error_page 404 /404.html;

	# redirect server error pages to the static page /50x.html
	#
	#error_page 500 502 503 504 /50x.html;
	#location = /50x.html {
	#	root /usr/share/nginx/html;
	#}

}