nginx-glb.conf

user  nginx;
worker_processes  auto;

load_module modules/ngx_stream_js_module.so;
load_module modules/ngx_stream_geoip2_module.so;

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

events {
    worker_connections  1024;
}

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;

  sendfile        on;
  #tcp_nopush     on;

  keepalive_timeout  65;

  #gzip  on;

  upstream www_netflix_com {
    zone upstream_www_netflix_com 64k;
    server 52.49.96.37;    # eu-west-1
    server 52.51.179.14 backup;
    server 52.32.190.151;  # us-west-2
    server 52.41.193.16 backup;
  }

  match server_ok {
    status 200-399;
  }

  server {
    listen 127.0.0.1:8888;
    server_name www.netflix.com;
    set $test "foobar";
    location / {
      proxy_pass http://www_netflix_com;
      proxy_set_header Host $host;
      proxy_http_version 1.1;
      health_check interval=10 fails=3 passes=3 match=server_ok;
    }
  }

  server {
    listen 127.0.0.1:80;
    location /api/ {
      api write=on;
      allow 127.0.0.1;
      deny all;
    }
  }

}

stream {

  js_include /etc/nginx/njs.d/nginx_stream.js;
  js_set $glb_response glb_get_response;
  js_set $edns_subnet glb_get_edns_subnet;

  keyval_zone zone=glb_config:64k state=/etc/nginx/zones/glb_config.zone;
  keyval "www_netflix_com" $www_netflix_com zone=glb_config;
  keyval "GLB_USE_EDNS" $glb_use_edns zone=glb_config;

  # The following keys are needed if s.api() is unavailable
  keyval "www_netflix_com_nodes" $www_netflix_com_nodes zone=glb_config;
  keyval "www_netflix_com_geoip_52_49_96_37" $www_netflix_com_geoip_52_49_96_37 zone=glb_config;
  keyval "www_netflix_com_geoip_52_51_179_14" $www_netflix_com_geoip_52_51_179_14 zone=glb_config;
  keyval "www_netflix_com_geoip_52_32_190_151" $www_netflix_com_geoip_52_32_190_151 zone=glb_config;
  keyval "www_netflix_com_geoip_52_41_193_16" $www_netflix_com_geoip_52_41_193_16 zone=glb_config;

  # set $geoip_source to EDNS if we have one, or the $remote_addr if not
  map $edns_subnet $geoip_source {
    "" $remote_addr;
    default $edns_subnet;
  }

  # get the country, latitude, and longitude from the GeoLite2 City DB
  geoip2 /etc/geoip/GeoLite2-City.mmdb {
    $geoip2_country_code default=GB source=$geoip_source country iso_code;
    $geoip2_latitude default=51.52830 source=$geoip_source location latitude;
    $geoip2_longitude default=0.0000 source=$geoip_source location longitude;
  }

  # process the DNS request
  server {
    listen 192.168.64.20:53 udp reuseport;
    js_preread glb_process_request;
    return $glb_response;
  }

}