nginx setup with virtualhosts

pid /opt/nginx/logs/nginx.pid;
# Run as the nginx user
user nginx nginx;
worker_processes 2; 
 
error_log  /opt/nginx/logs/error.log notice;
 
events {
  worker_connections 1024;
  use epoll;
}
 
http {
  server_names_hash_bucket_size 64;
  # More Linux performance awesomeness
  tcp_nopush  on;
  tcp_nodelay off;
 
  # Where to store the body of large client requests on disk
  # NGINX will stream this to disk before posting it to your Mongrels,
  # preventing slow clients tying up your app.
  client_body_temp_path /var/spool/nginx-client-body 1 2;
 
  # Max size of a request from a client (usually a POST).  This will limit
  # the size of file uploads to your app
  client_body_buffer_size   8k;
  client_header_buffer_size 1k;
  client_max_body_size      1k;
  large_client_header_buffers 1 1k;

  ## Timeouts 
  client_body_timeout   5;
  client_header_timeout 5;
  keepalive_timeout     5 5;
  send_timeout          5;

  ## General Options
  ignore_invalid_headers   on;
  limit_zone carboncal $binary_remote_addr 1m;
  recursive_error_pages    on;
  sendfile                 on;
  server_name_in_redirect off;
  server_tokens           off;


  # passenger loading stuff
  passenger_root /usr/local/lib/ruby/gems/1.9.1/gems/passenger-2.2.11;
  passenger_ruby /usr/local/bin/ruby;

  include /opt/nginx/conf/mime.types;
  default_type       application/octet-stream;

  ## Compression
  gzip              on;
  gzip_buffers      16 8k;
  #compression level between 1 and 9
  gzip_comp_level   9;
  gzip_http_version 1.0;
  gzip_min_length   0;
  gzip_types        text/plain text/html text/css image/x-icon image/bmp application/x-javascript text/xml application/xml application/xml+rss text/javascript ;
  gzip_vary         on;
  gzip_proxied any;
  # Some version of IE 6 don't handle compression well on some mime-types, so just disable them
  gzip_disable "MSIE [1-6].(?!.*SV1)";
 
 
  # Send along useful info to the mongrels
  proxy_set_header  X-Real-IP  $remote_addr;
  proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header Host $http_host;
  proxy_redirect off;
  proxy_max_temp_file_size 0;

  ## Log Format
  log_format  main  '$remote_addr $host $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" "$http_user_agent" "$gzip_ratio"';

  
  access_log /opt/nginx/logs/access.log main;

  # virtual hosting
  include /opt/nginx/vhosts/*;
 

}