详解Nginx中的geo模块与利用其配置负载均衡的示例

geo $remote_addr $geo {
    default 0;
    127.0.0.1 1;
}
geo $arg_ttlsa_com $geo {
    default 0;
    127.0.0.1 1;
}

geo $country {
  default    ZZ;
  include    conf/geo.conf;
  delete     127.0.0.0/16;
  proxy     192.168.100.0/24;
  proxy     2001:0db8::/32;
 
  127.0.0.0/24  US;
  127.0.0.1/32  RU;
  10.1.0.0/16  RU;
  192.168.1.0/24 UK;
}

vim conf/geo.conf

10.2.0.0/16  RU;
192.168.2.0/24 RU;

geo $country {
  ranges;
  default          ZZ;
  127.0.0.0-127.0.0.0    US;
  127.0.0.1-127.0.0.1    RU;
  127.0.0.1-127.0.0.255   US;
  10.1.0.0-10.1.255.255   RU;
  192.168.1.0-192.168.1.255 UK;
}

shell $> cd /usr/local/nginx/html
shell $> rm index.html
shell $> echo "192.168.6.101" > index.html

shell $> cd /usr/local/nginx/html
shell $> rm index.html
shell $> echo "192.168.6.102" > index.html

shell $> /usr/local/nginx/sbin/nginx
 

shell $> cd /usr/local/nginx/conf/
shell $> vim nginx.conf

worker_processes 1;
 
events {
  worker_connections 1024;
}
http {
  include    mime.types;
  default_type application/octet-stream;
  geo $geo {
    default default;
    192.168.6.189/32    uk;
    192.168.6.8/32     us;
#这里的子网码是 32 是因为，我是单网段测试，如果你有VLAN，你可以是24 例如
# 192.168.0.0/24   tw
  }
  upstream  uk.server {
    server 192.168.6.101;
  }
  upstream  us.server {
    server 192.168.6.102;
  }
  upstream  default.server {
    server 192.168.6.121:8080;
  }
  sendfile    on;
  keepalive_timeout 65;

  server {
    listen    80;
    server_name 192.168.6.121;
    index index.html index.htm;
    root html;

    location / {
        proxy_redirect off;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass http://$geo.server$request_uri;
    }
    error_page  500 502 503 504 /50x.html;
    location = /50x.html {
      root  html;
    }
 
  }
 
  server {
    listen    8080;
    server_name 192.168.6.121;
    location / {
      root  html;
      index index.html index.htm;
    }
  }
}