Installing NGINX on Amazon Linux is straightforward, with only one command:

sudo yum install nginx

Once NGINX is ready, let's install the SSL certificate with Let's Encrypt (https://letsencrypt.org). Hats off to the Let's Encrypt team! Before installing the SSL certificate, we need to make sure the taskagile.com domain points to the server. We will use Certbot (https://github.com/certbot/certbot) to automate the generated certificate by using the following command:

sudo yum install -y certbot python2-certbot-nginx

Once Certbot is installed, start the generating process with the following command and follow the instructions to finish the certificate generation:

sudo certbot

When you see a success message similar to the following, it means the SSL certificate has been installed successfully, and Certbot has updated NGINX's /etc/nginx/nginx.conf configuration file to enable HTTPS automatically:

Congratulations! You have successfully enabled https://taskagile.com

Now, we need to do a reverse proxy, by asking NGINX to forward requests to our application at port 8080. Open /etc/nginx/nginx.conf, and update the location / subsection of the http section as follows:

...
http {
  ...
  server {
    server_name taskagile.com; 
    ...
    location / {
      proxy_read_timeout 1000;
      proxy_send_timeout 1000;
      proxy_pass http://127.0.0.1:8080; 
      proxy_buffering on;
      proxy_connect_timeout 15;
      proxy_intercept_errors on;
      proxy_set_header Host $http_host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
    ...
  }
}
...

And with that, we've completed the preparation of the server.