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Created January 2, 2012 20:03
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nginx config for unicorn
# you generally only need one nginx worker unless you're serving
# large amounts of static files which require blocking disk reads
worker_processes 1;
user nobody nogroup; # for systems with a "nogroup"
pid /tmp/;
error_log /tmp/nginx.error.log;
events {
worker_connections 1024;
accept_mutex off;
use epoll; # enable for Linux 2.6+
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
tcp_nopush on;
tcp_nodelay off;
gzip on;
gzip_http_version 1.0;
gzip_proxied any;
gzip_min_length 500;
gzip_disable "MSIE [1-6]\.";
gzip_types text/plain text/html text/xml text/css
text/javascript application/x-javascript
upstream app_server {
server unix:/tmp/.sock fail_timeout=0;
server {
client_max_body_size 4G;
server_name _;
keepalive_timeout 5;
root /u/apps/yourappdirectory/current/public;
try_files $uri/index.html $uri.html $uri @app;
location ~ ^/(assets)/ {
root /u/apps/yourappdirectory/current/public;
gzip_static on; # to serve pre-gzipped version
expires max;
add_header Cache-Control public;
location @app {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
# enable this if and only if you use HTTPS, this helps Rack
# set the proper protocol for doing redirects:
# proxy_set_header X-Forwarded-Proto https;
# pass the Host: header from the client right along so redirects
# can be set properly within the Rack application
proxy_set_header Host $http_host;
# we don't want nginx trying to do something clever with
# redirects, we set the Host: header above already.
proxy_redirect off;
# set "proxy_buffering off" *only* for Rainbows! when doing
# Comet/long-poll/streaming. It's also safe to set if you're using
# only serving fast clients with Unicorn + nginx, but not slow
# clients. You normally want nginx to buffer responses to slow
# clients, even with Rails 3.1 streaming because otherwise a slow
# client can become a bottleneck of Unicorn.
# The Rack application may also set "X-Accel-Buffering (yes|no)"
# in the response headers do disable/enable buffering on a
# per-response basis.
# proxy_buffering off;
proxy_pass http://app_server;
# Rails error pages
error_page 500 502 503 504 /500.html;
location = /500.html {
root /u/apps/yourappdirectory/current/public;
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