nginx.conf

user  nginx;
worker_processes  auto;

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


events {
  worker_connections  1024;
  use epoll;
  multi_accept  on;
}


http {
  include       /etc/nginx/mime.types;
  default_type  application/octet-stream;

  log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

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

  server_tokens   off;
  sendfile        on;
  #tcp_nopush     on;

  keepalive_timeout  65;
  server_names_hash_bucket_size 64;
  #gzip  on;

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

passenger.conf
=====================================================
passenger_log_level 2;
passenger_log_file /var/log/passenger/passenger.log;
passenger_instance_registry_dir /var/cache/nginx/passenger_temp/;
passenger_root /etc/nginx/modules/passenger;
passenger_ruby /usr/bin/ruby;