How do I prevent a Gateway Timeout with FastCGI on Nginx

I am running Django, FastCGI, and Nginx. I am creating an api of sorts that where someone can send some data via XML which I will process and then return some status codes for each node that was sent over.

The problem is that Nginx will throw a 504 Gateway Time-out if I take too long to process the XML -- I think longer than 60 seconds.

So I would like to set up Nginx so that if any requests matching the location /api will not time out for 120 seconds. What setting will accomplish that.

What I have so far is:

    # Handles all api calls
    location ^~ /api/ {
        proxy_read_timeout 120;
        proxy_connect_timeout 120;
        fastcgi_pass 127.0.0.1:8080;
    }

Edit: What I have is not working :)

Proxy timeouts are well, for proxies, not for FastCGI...

The directives that affect FastCGI timeouts are client_header_timeout, client_body_timeout and send_timeout.

Edit: Considering what's found on nginx wiki, the send_timeout directive is responsible for setting general timeout of response (which was bit misleading). For FastCGI there's fastcgi_read_timeout which is affecting the FastCGI process response timeout.

For those using nginx with unicorn and rails, most likely the timeout is in your unicorn.rb file

put a large timeout in unicorn.rb

timeout 500

if you're still facing issues, try having fail_timeout=0 in your upstream in nginx and see if this fixes your issue. This is for debugging purposes and might be dangerous in a production environment.

upstream foo_server {
        server 127.0.0.1:3000 fail_timeout=0;
}

In http nginx section (/etc/nginx/nginx.conf) add or modify:

keepalive_timeout 300s

In server nginx section (/etc/nginx/sites-available/your-config-file.com) add these lines:

client_max_body_size 50M;
fastcgi_buffers 8 1600k;
fastcgi_buffer_size 3200k;
fastcgi_connect_timeout 300s;
fastcgi_send_timeout 300s;
fastcgi_read_timeout 300s;

In php file in the case 127.0.0.1:9000 (/etc/php/7.X/fpm/pool.d/www.conf) modify:

request_terminate_timeout = 300

I hope help you.

If you use unicorn.

Look at top on your server. Unicorn likely is using 100% of CPU right now. There are several reasons of this problem.

• You should check your HTTP requests, some of their can be very hard.

• Check unicorn's version. May be you've updated it recently, and something was broken.

In server proxy set like that

location / {
			
				proxy_pass http://ip:80;				
			
				proxy_connect_timeout   90;
				proxy_send_timeout      90;
				proxy_read_timeout      90;
				
			}

In server php set like that

server {
        client_body_timeout 120;
		location = /index.php {

	        	#include fastcgi.conf; //example
		        #fastcgi_pass unix:/run/php/php7.3-fpm.sock;//example veriosn

		        fastcgi_read_timeout 120s;
       }
}