Upstream fail over?

[mitchua]

I finally got this working the way I wanted it. I ended up using error_page instead per Maxim's suggestion:

upstream varnishservers 
{
	server 10.1.1.1:8080; #CACHE1
}


upstream originservers 
{
	server 10.2.2.2:80; #WEB1
	server 10.3.3.3:80; #WEB2
}

server 
{
   	listen       8080;
	server_name _;
	server_name_in_redirect  off;
	
  	location / 
	{
		access_log      off;
		error_page   502 503 504 = @origin;
		proxy_pass http://varnishservers;
		proxy_set_header Host $host;
		proxy_connect_timeout 1;
		proxy_next_upstream error timeout http_500 http_502 http_503 http_504 http_404;
		proxy_intercept_errors on;
		break;
	}
	

	location @origin
	{	
		access_log      off;
		proxy_pass http://originservers;
		proxy_set_header Host $host;
		proxy_connect_timeout 4;
		proxy_next_upstream error timeout http_500 http_502 http_503 http_504 http_404;
		proxy_intercept_errors on;
		break;
	}

}

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,3296,4682#msg-4682