从我的Django应用容器中获取主机IP

Question

There is a feature on our web app that we need to send the IP of our server but I always send 172.17.0.2 because that is the value of request.META['REMOTE_ADDR'] which is usually 127.0.0.1 when using django in localhost and which I assume is the TCP address of our NGINX container which where the request is coming from. How will I send the IP of my docker host instead?

Containers:

• Nginx
• Django with gunicorn
• PostgreSQL
• Redis

Answer 1

Pass it as an environment variable to your container when you create it. Then, read that environment variable in your Django code.

You can do it with option -e HOST_IP=$(/sbin/ip route | awk '/default/ { print $3 }') in docker run command.

In docker-compose.yml , you could do something like this.

django:
  environment:
    - HOST_IP=$(/sbin/ip route | awk '/default/ { print $3 }')

Answer 2

Try this:

import subprocess
host = subprocess.check_output(['bash', '-c', "/sbin/ip route|awk '/default/ { print $3 }'"]).decode('utf-8').strip()