pavel_karoukin's questions

I run several docker containers with hostnames:

web1.local web2.local web3.local

Routing to these done based on hostname by nginx. I have a proxy in front of this setup (on different machine connected to internet) where I define upstream as:

    upstream main {
      server web1.local:80;
      server web2.local:80;
      server web3.local:80;
    }

And actual virtual host description:

    server {
      listen 80;
      server_name example.com;
      location / {
        proxy_pass http://main;
      }
    }

Now, because containers receive hostname "main" instead of "web1.local", they do not respond properly to the request.

Question: how I can tell nginx to pass name of the upstream server instead of name of upstream group of servers in Host: header when proxying request?