XF 1.2 nginx xenforo error connect() failed (111: Connection refused) while connecting to upstream, client

[Brent W]

I see this pop up frequently in my nginx error log. Different urls each time.

2013/11/19 20:40:45 [error] 12221#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 66.249.64.2, server: www.v6mustang.com, request: "POST /deferred.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "www.v6mustang.com", referrer: "http://www.v6mustang.com/members/avonmustang.15123/post-areas"

 

[Brent W]

No ideas? This can't be normal...

here is a different one that just came in

2013/11/20 08:54:42 [error] 15593#0: *143 connect() failed (111: Connection refused) while connecting to upstream, client: 66.249.64.3, server: www.v6mustang.com, request: "GET /threads/updated-pics-of-my-car-cervinis-ram-air-hood-and-side-scoops.198747/ HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "www.v6mustang.com"

 

[Mike]

That looks like an error coming from your FastCGI server. Perhaps it doesn't have any slots available to process the request?

 

[Brent W]

Thanks. Being a newbie to nginx I am not sure about optimizations and such. I will poke around with that bit of information.

 

[TPerry]

Thanks. Being a newbie to nginx I am not sure about optimizations and such. I will poke around with that bit of information.

Quick Google search seems to confirm that it's your FCGI processor

This is not really an Nginx error. The problem is that the backend is not listening on port 9000 or its queue is filled up. I was unable to telnet to 127.0.0.1 9000. Restarting spawn-fcgi fixed this.

from here.

Best bet is that the queue is full.