Sample configuration for mongate.

nginx.conf

upstream mongo_rest {
        server 127.0.0.1:xxxx;
        server 127.0.0.1:xxxx;
        server 127.0.0.1:xxxx;
}

server {
  listen xxxxx;
  ssl on;
  server_name example.com;

  auth_basic            "Restricted";
  auth_basic_user_file  conf/htpasswd;

  ssl_certificate /etc/nginx/conf.d/server.crt;
  ssl_certificate_key /etc/nginx/conf.d/server.key;
 
  location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X_FORWARDED_PROTO https;
        proxy_set_header X-Forwarded-For
        $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;
        proxy_pass http://mongo_rest;
        break;
  }
}