I start a node.js server on the aws cloud, the location of the server is /home/ubuntu/home/fablab. I can start my node.js server with nginx in port 80, everything is working fine.

Then I am following the tutorial to work node.js and nginx on the server, I reconfigure the node.js port to 61337, build a fablab.conf under the folder of /etc/nginx/sites-available, and then ln -s /etc/nginx/sites-available/fablab.conf /etc/nginx/sites-enabled/fablab.conf. This is my fablab.conf

server { listen 80; server_name fablab; location ~ ^/(images/|img/|javascript/|js/|css/|stylesheets/|flash/|media/|static/|robots.txt|humans.txt|favicon.ico) { root /home/ubuntu/node/fablab/public; access_log off; expires max; } client_max_body_size 16M; root /home/ubuntu/node/fablab; index /home/ubuntu/node/fablab/public/forum.html; location / { access_log off; proxy_pass http://127.0.0.1:61337; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; proxy_set_header Host $http_host; #proxy_set_header Host $host; proxy_set_header X-NginX-Proxy true; # websockets support proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "upgrade"; proxy_http_version 1.1; } } 

I reload and restart the nginx, and when I go to the server IP address and port 80, the page is still nginx's welcome page.

Why it doesn't work so far, everything I missed out? I think the key for the fablab.conf, is the proxy_pass http://127.0.0.1:61337, is it already?

I have two confusions

1. do I have to use the default.conf in the /etc/nginx/sites-enabled, some other names are ok?

2. in the conf file, server_name is supposed to be host name, what if I only have IP address, not host name right now, how to do in this host name. as it is on AWS, do i need to fill in this as the my aws serer's domain name like ec2-24-210-148-112.us-west-2.compute.amazonaws.com

3. in the tutorial, server_name in the conf file is saying like this :

   Make sure to set the A Record on your domain's DNS settings to your server's IP address.

   You can test if was set properly by using the dig command: dig yourdomain.com

what does it mean ? how would I do it