nginx.conf

user  nginx;
worker_processes  1;

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


events {
  worker_connections  1024;
}


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

  # open_file_cache             max=10000 inactive=5m;
  # open_file_cache_valid       1m;
  # open_file_cache_min_uses    1;
  # open_file_cache_errors      on;

  map $remote_addr $remote_addr_anon {
    ~(?P<ip>\d+\.\d+\.\d+)\.  $ip.0;
    ~(?P<ip>[^:]+:[^:]+):     $ip::;
    default                   0.0.0.0;
  }

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

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

  sendfile    on;
  #tcp_nopush   on;

  keepalive_timeout  65;

  include /etc/nginx/conf.d/*.conf;
}