Unable to serve multiple rails applications with Nginx + Unicorn - ruby-on-rails

Question

I know this is a very common issue, but I've been struggling days with a strange one this time:
I want to serve two Rails 4 apps on the same VPS (ubuntu 14.04). I followed this guide for one app with success. My app1 is working fine. But not app2.
The error is this one (/var/log/nginx/error.log):
directory index of "/srv/app1/public/app2/" is forbidden
General nginx.conf
# Run nginx as www-data.
user www-data;
# One worker process per CPU core is a good guideline.
worker_processes 1;
# The pidfile location.
pid /var/run/nginx.pid;
# For a single core server, 1024 is a good starting point. Use `ulimit -n` to
# determine if your server can handle more.
events {
worker_connections 1024;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay off;
keepalive_timeout 65;
types_hash_max_size 2048;
server_tokens off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
gzip_http_version 1.1;
gzip_proxied any;
gzip_min_length 500;
gzip_types text/plain text/xml text/css
text/comma-separated-values text/javascript
application/x-javascript application/atom+xml;
##
# Unicorn Rails
##
# The socket here must match the socket path that you set up in unicorn.rb.
upstream unicorn_app2 {
server unix:/srv/app2/tmp/unicorn.app2.sock fail_timeout=0;
}
upstream unicorn_app1 {
server unix:/srv/app1/tmp/unicorn.app1.sock fail_timeout=0;
}
##
# Virtual Host Configs
##
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}
sites-available/app1
server {
listen 80;
server_name _
public.ip.of.vps; # Replace this with your site's domain.
keepalive_timeout 300;
client_max_body_size 4G;
root /srv/app1/public; # Set this to the public folder location of your Rails application.
location /app1 {
try_files $uri #unicorn_app1;
}
location #unicorn_app1 {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded_Proto $scheme;
proxy_redirect off;
# This passes requests to unicorn, as defined in /etc/nginx/nginx.conf
proxy_pass http://unicorn_app1;
proxy_read_timeout 300s;
proxy_send_timeout 300s;
auth_basic "Restricted"; #For Basic Auth
auth_basic_user_file /etc/nginx/.htpasswd; #For Basic Auth
}
location ~ ^/assets/ {
#gzip_static on; # to serve pre-gzipped version
expires max;
add_header Cache-Control public;
}
# You can override error pages by redirecting the requests to a file in your
# application's public folder, if you so desire:
error_page 500 502 503 504 /500.html;
location = /500.html {
root /srv/app1/public;
}
}
sites-available/app2
server {
listen 80;
server_name __
public.ip.of.vps; # Replace this with your site's domain.
keepalive_timeout 300;
client_max_body_size 4G;
root /srv/app2/public; # Set this to the public folder location of your Rails application.
location /app2 {
try_files $uri #unicorn_app2;
}
location #unicorn_app2 {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded_Proto $scheme;
proxy_redirect off;
# This passes requests to unicorn, as defined in /etc/nginx/nginx.conf
proxy_pass http://unicorn_app2;
proxy_read_timeout 300s;
proxy_send_timeout 300s;
auth_basic "Restricted"; #For Basic Auth
auth_basic_user_file /etc/nginx/.htpasswd; #For Basic Auth
}
location ~ ^/assets/ {
#gzip_static on; # to serve pre-gzipped version
expires max;
add_header Cache-Control public;
}
# You can override error pages by redirecting the requests to a file in your
# application's public folder, if you so desire:
error_page 500 502 503 504 /500.html;
location = /500.html {
root /srv/app2/public;
}
}
Why is that nginx is looking for app2 in the public folder of app1?

Answer 1

The problem is that your 2 nginx server blocks are listening to the same domain name.
Move the location blocks /app2 and unicorn_app2 into site-available/app1
And delete site-available/app2
This answer shows an example.