Question

“upstream sent too big header while reading response header from upstream”

I keep getting this when I try and do an authentication from facebook. I’ve increased my buffers:

proxy_buffer_size   256k;
proxy_buffers   8 256k;
proxy_busy_buffers_size   512k;
fastcgi_buffers 8 256k;
fastcgi_buffer_size 128k;

But it doesn’t seem to help. Any thoughts as to why this might occur?

nginx.conf file:

user www-data;
worker_processes  1;

error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
    # multi_accept on;
}


http {
    include       /etc/nginx/mime.types;

proxy_buffer_size   256k;
proxy_buffers   8 256k;
proxy_busy_buffers_size   512k;
fastcgi_buffers 8 256k;
fastcgi_buffer_size 128k;

    access_log  /var/log/nginx/access.log;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;
    tcp_nodelay        on;

    gzip  on;
    gzip_disable "MSIE [1-6]\.(?!.*SV1)";

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;
}

/etc/nginx/sites-enabled/default

server {
    listen   80 default;
    server_name  localhost;

    access_log  /var/log/nginx/localhost.access.log;

    location / {
        root   /var/www/nginx-default;
        index  index.html index.htm;
    }

    location /doc {
        root   /usr/share;
        autoindex on;
        allow 127.0.0.1;
        deny all;
            }

    location /images {
        root   /usr/share;
        autoindex on;
    }
}

Answer 1

Turns out Codeigniter sets its own max size. I haven’t figured out how to limit that, but changing nginx won’t change anything unfortunately. Thanks for all the help VBart and gsharma.