Example configuration for rancher nginx proxy with ssl termination.

rancher_nginx.conf

user www-data;
worker_processes 4;
pid /run/nginx.pid;

events {
  worker_connections 768;
}

http {
  server {
      listen 443 ssl;
      server_name rancher.example.com;
      ssl_certificate /etc/nginx/ssl/example.pem;
      ssl_certificate_key /etc/nginx/ssl/example.key;

      location / {
          proxy_set_header Host $host;
          proxy_set_header X-Forwarded-Proto $scheme;
          proxy_set_header X-Forwarded-Port $server_port;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_pass http://0.0.0.0:8080;
          proxy_http_version 1.1;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "upgrade";
          proxy_read_timeout 900s;
      }
  }

  server {
      listen 80;
      server_name rancher.example.com;
      return 301 https://$server_name$request_uri;
  }
}