Node Behind Nginx Chef Template and Recipe Call

gistfile1.rb

# Recipe Call
template "#{node[:nginx][:dir]}/sites-available/<app_name>" do
  source "nginx_node_app.erb"
  owner "root"
  group "root"
  mode 0644
  variables(
    :app_name => "<app_name>",
    :app_port => "<app_port>",
    :app_domains => "<app_domains>"
  )
end

# Template Contents
upstream <%= @params[:app_name] %> {
  ip_hash;
  server localhost:<%= @params[:app_port] %> weight=10 max_fails=3 fail_timeout=30s; # Reverse proxy to localhost
}

server {
  listen 80;

  server_name <%= @params[:app_domains] %>;

  access_log  /var/log/nginx/nginx.access.<%= @params[:app_name] %>.log;
  error_log  /var/log/nginx/nginx_error.<%= @params[:app_name] %>.log debug;

  location / {
    proxy_pass http://<%= @params[:app_name] %>; # Load balance the URL location "/" to the upstream lb-subprint
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_set_header Host $host;
    proxy_cache_bypass $http_upgrade;
  }

  error_page   500 502 503 504  /50x.html;
  location = /50x.html {
    root   /var/www/nginx-default;
  }
}