How to set the allowed url length for a nginx request (error code: 414, uri too large)

Question

I am using Nginx in front of 10 mongrels.

When I make a request with size larger then 2900 I get back an:

error code 414: uri too large

Does anyone know the setting in the nginx configuration file which determines the allowed uri length ?

Answer 1

For anyone having issues with this on https://forge.laravel.com, I managed to get this to work using a compilation of SO answers;

You will need the sudo password.

sudo nano /etc/nginx/conf.d/uploads.conf

Replace contents with the following;

fastcgi_buffers 8 16k;
fastcgi_buffer_size 32k;

client_max_body_size 24M;
client_body_buffer_size 128k;

client_header_buffer_size 5120k;
large_client_header_buffers 16 5120k;

Answer 2

I had very similar issue but with a different error

upstream sent too big header while reading response header from upstream

In order to fix it I've changed

server {
....
proxy_buffers   4 32k;
proxy_buffer_size   32k;
...
}

For more information you can visit nginx-doc