在Nginx上游使用phoenix记录真实IP地址 [英] Record real IP address on using phoenix in the nginx upstream

问题描述

我有一个上游的phoenix应用程序，像这样:

I have an upstreaming phoenix app, like that:

upstream my_app {
    server localhost:3001;
}

server {
    root /var/www/my_app/priv/static;
    listen 80;

    location / {
        proxy_pass http://my_app;
    }
}

我想跟踪真实的IP地址，但是我不知道如何通过标准的phoenix conn.remote_ip来实现，因为它总是返回127.0.0.1(因为nginx将此查询代理为phoenix).如何获取真实的IP地址?

I want to track real IP address, but I don't know how to do it via standard phoenix conn.remote_ip because its always return 127.0.0.1 (because nginx proxies this query to phoenix). How can I fetch real ip address?

推荐答案

有专门为此目的设计的x-forwarded-for标头！

There is x-forwarded-for header designed especially for that!

# nginx
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

# phoenix
conn.get_req_header(conn, "x-forwarded-for")

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