2020年，最新NGINX的ngx_http_geoip2模块以精准禁止特定国家或者地区IP访问

cd /usr/local/src
rm -f libmaxminddb-1.4.2.tar.gz
wget https://github.com/maxmind/libmaxminddb/releases/download/1.4.2/libmaxminddb-1.4.2.tar.gz
tar -xzf libmaxminddb-1.4.2.tar.gz
cd libmaxminddb-1.4.2
yum install gcc gcc-c++ make -y
./configure
make
make check
sudo make install

echo '/usr/local/lib' > /etc/ld.so.conf.d/geoip.conf
sudo ldconfig

cd /usr/local/src
wget https://github.com/leev/ngx_http_geoip2_module/archive/3.3.tar.gz
tar -xzf 3.3.tar.gz
mv ngx_http_geoip2_module-3.3 ngx_http_geoip2_module

# nginx集成
cd /usr/local/src
wget http://nginx.org/download/nginx-1.16.1.tar.gz
tar -zxf nginx-1.16.1.tar.gz
cd nginx-1.16.1
useradd -M -s /sbin/nologin www


yum install gcc gcc-c++ make pcre-devel zlib-devel openssl-devel -y
./configure --user=www --group=www --prefix=/usr/local/nginx \
--with-ld-opt="-Wl,-rpath -Wl,/usr/local/lib" \
--with-http_sub_module \
--with-http_realip_module \
--with-http_gzip_static_module \
--with-http_ssl_module \
--with-http_v2_module \
--add-module=/usr/local/src/ngx_http_geoip2_module

make
make install

cd /usr/local/src/
wget https://github.com/maxmind/geoipupdate/releases/download/v4.2.0/geoipupdate_4.2.0_linux_amd64.rpm
rpm -ivh geoipupdate_4.2.0_linux_amd64.rpm
rpm -ql geoipupdate vi /etc/GeoIP.conf
#填写AccountID XXXX #填写LicenseKey XXXX #EditionIDs可以不修改，系统默认有填 GeoLite2-Country GeoLite2-City
#笔者EditionIDs只保留GeoLite2-City
#保存退出
#运行geoipupdate
/usr/bin/geoipupdate
cd /usr/share/GeoIP/
# 会看到GeoLite2-City.mmdb 把GeoLite2-City.mmdb文件cp到需要使用的目录
sudo mkdir -p /usr/local/nginx/geoip/
cp -rf /usr/share/GeoIP/GeoLite2-City.mmdb /usr/local/nginx/geoip/maxmind-city.mmdb

http {
  ...
 geoip2 /usr/local/nginx/geoip/maxmind-city.mmdb {
       $geoip2_data_country_code default=US source=$remote_addr country iso_code;
       $geoip2_data_country_name country names en;
       $geoip2_data_city_name default=London city names en;
       $geoip2_data_province_name subdivisions 0 names en;
       $geoip2_data_province_isocode subdivisions 0 iso_code;
  }
  ....
  fastcgi_param COUNTRY_CODE $geoip2_data_country_code;
  fastcgi_param COUNTRY_NAME $geoip2_data_country_name;
  fastcgi_param CITY_NAME    $geoip2_data_city_name;
  ....
    map geoip2_data_country_code $allowed_country {
        default yes;
        US no;
        JP no;
        SG no;
     }
}
stream {
    ...
    geoip2 /usr/local/nginx/geoip/maxmind-city.mmdb {
      $geoip2_data_country_code default=US source=$remote_addr country iso_code;
      $geoip2_data_country_name country names en;
      $geoip2_data_city_name default=London city names en;
      $geoip2_data_province_name subdivisions 0 names en;
      $geoip2_data_province_isocode subdivisions 0 iso_code;
    }
    ...
}

server {
     if ($allowed_country = no) {     return 403; }
}