nginx module - geoip2

由 datahunter 在三, 21/08/2024 - 12:11 發表

Install
Config
應用

Install

# U22

apt install libnginx-mod-http-geoip2

cd /etc/nginx/modules-enabled

ln -s /usr/share/nginx/modules-available/mod-http-geoip2.conf 50-mod-http-geoip2.conf

load_module modules/ngx_http_geoip2_module.so;

Config

nginx.conf

http {
    ...
    include conf.d/*.conf;
    include vhosts/*.conf;
}

conf.d/geoip2.conf

# geoip2
geoip2 /usr/share/geoip/dbip-country-lite.mmdb {
    auto_reload 5m;
    $geoip2_data_country_code default=UNKNOWN country iso_code;
}

vhosts/vhost.conf

# vhosts
server {
    location = / {
        default_type 'text/html';
        add_header expires "0";
        add_header cache-control "no-store, private";
        echo '<html><body><pre>';
        echo $remote_addr;
        echo $geoip2_data_country_code;
        echo '</pre></body></html>';
    }
    location / { try_files $uri $uri/ =404; }
}

Syntax

$variable_name [default=<value>] [source=$variable_with_ip] 'data path'

If default is not specified, the variable will be empty if not found.
If source is not specified, $remote_addr will be used to perform the lookup.
data path 是 mmdblookup 的 "data path" (e.g. "country iso_code")

e.g.

$geoip2_data_country_code default=UNKNOWN country iso_code;

Settings

Autoreload (default: disabled):

nginx check the modification time of the database at the specified interval and reload it if it has changed.

auto_reload <interval>

用 soft link 可以方便 reload

cd /usr/share/geoip

ln -s dbip-country-lite-2024-09.mmdb dbip-country-lite.mmdb

應用

限制國家訪問

snippets/allowed_country.conf

# geoip2 map
map $geoip2_data_country_code $allowed_country {
    default no;
    #HK yes;
    CN yes;
}

nginx.conf

http {
    # Get Var $allowed_country
    include snippets/allowed_country.conf;
    ...
}

sites-enabled/vhosts.conf

server {
    # FIRST on server
    # 用於跳過 country checking
    if ($allow_ip) { break; }
    if ($allowed_country = no) { return 400; }
    ...
}

Notes

用 400 比 403 好, 這樣易於 debug

allow_ip

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nginx module - geoip2

Install

Config

應用