Assuming that you will be deploying this on a clean AWS Fedora/Centos server instance:

1. sudo yum update
2. Install git with dependancies sudo yum install curl-devel expat-devel gettext-devel \ openssl-devel zlib-devel
3. Install node package manager: curl --silent --location https://rpm.nodesource.com/setup_6.x | sudo bash -
4. Update node package manager: npm install npm@latest -g
5. Install node: sudo yum install -y nodejs
6. Install node version manager: sudo npm i -g n
7. Install nodejs: sudo n 6.11.2
8. Install g++: sudo yum install gcc-c++
9. Install dependencies for color-thief package: sudo yum install cairo cairo-devel cairomm-devel libjpeg-turbo-devel pango pango-devel pangomm pangomm-devel giflib-devel
10. Clone github repository: git clone https://github.com/HelloFax/nodejs-demo.git
11. CD into the nodejs-demo folder and install all node packages: sudo npm i
12. Install nginx: sudo yum install nginx
13. Configure nginx as reverse proxy:
    1. Create a configuration file sudo vi \etc\nginx\sites-available\default\node-sales-demo.com
    2. you could use whichever text editor you'd like - this one's vim
    3. Paste in the following configuration (note the domain demo.hellosign.com throughout):

       server {
            listen 80 default_server;
            listen [::]:80 default_server ipv6only=on;
    
            server_name demo.hellosign.com;
            return 301 https://demo.hellosign.com;
        }
    
       server {
    
            listen 443;
            server_name demo.hellosign.com;
    
            ssl_certificate           /etc/letsencrypt/live/demo.hellosign.com/fullchain.pem;
            ssl_certificate_key       /etc/letsencrypt/live/demo.hellosign.com/privkey.pem;
    
            ssl on;
            ssl_session_cache  builtin:1000  shared:SSL:10m;
            ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
            ssl_ciphers HIGH:!aNULL:!eNULL:!EXPORT:!CAMELLIA:!DES:!MD5:!PSK:!RC4;
            ssl_prefer_server_ciphers on;
    
            access_log            /var/log/nginx/jenkins.access.log;
    
            location / {
    
                  proxy_set_header        Host $host;
                  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_pass          http://localhost:8000;
                  proxy_read_timeout  90;
    
                  proxy_redirect      http://localhost:8000 demo.hellosign.com;
            }
       }
    

14. Update the nginx.config file under /etc/nginx to include the new folders and file you just created. This will also disable the default server (you can see it's all commented out):

    # For more information on configuration, see:
    # * Official English Documentation: http://nginx.org/en/docs/
    # * Official Russian Documentation: http://nginx.org/ru/docs/
    user nginx;
    worker_processes auto;
    error_log /var/log/nginx/error.log;
    pid /var/run/nginx.pid;
    # Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
    include /usr/share/nginx/modules/*.conf;
    events {
         worker_connections 1024;
    }
    http {
         log_format main '$remote_addr - $remote_user [$time_local] "$request" '
         '$status $body_bytes_sent "$http_referer" '
         '"$http_user_agent" "$http_x_forwarded_for"';
         access_log /var/log/nginx/access.log main;
         sendfile on;
         tcp_nopush on;
         tcp_nodelay on;
         keepalive_timeout 65;
         types_hash_max_size 2048;
         include /etc/nginx/mime.types;
         default_type application/octet-stream;
         # Load modular configuration files from the /etc/nginx/conf.d directory.
         # See http://nginx.org/en/docs/ngx_core_module.html#include
         # for more information.
         include /etc/nginx/conf.d/*.conf;
         include /etc/nginx/sites-available/default/*; # THIS IS WHERE YOU'RE ADDING YOUR FILE
         index index.html index.htm;
    }

1. Test nginx with sudo nginx -t
2. Restart nginx sudo service nginx restart
3. Install certbot and set up certificates: From ~ dir
   1. sudo yum -y install yum-utils
   2. yum-config-manager --enable rhui-REGION-rhel-server-extras rhui-REGION-rhel-server-optional
   3. wget https://dl.eff.org/certbot-auto
   4. chmod a+x certbot-auto
   5. sudo ./certbot-auto certonly --standalone -d demo.hellosign.com
4. Setup automatic certificate renewal:
   1. sudo crontab -e
   2. Add the following line: 15 3 * * * ./certbot-auto renew --quiet
5. Set up mongodb:
   1. If you're going to be using a local instance of mongodb install it using the instructions at the following link: https://tecadmin.net/install-mongodb-on-ubuntu/
   2. For an mlab deployment of mongodb add in the following environment variables :
      1. MONGO_USER - username for user created in mlab
      2. MONGO_PASS - password for user
      3. MONGO_HOST - this is everything after the @ symbol in the host address provided in mlab. For example, if the URL is, mongodb://<dbuser>:<dbpassword>@ds157723.mlab.com:57723/hellosign, MONGO_HOST would be ds157723.mlab.com:57723/hellosign
6. Install npm process manager: sudo npm i -g pm2
7. Navigate to ~/nodejs-demo folder and start the app with pm2: MONGO_USER=[mongo_user] MONGO_PASS=[mongo_password] MONGO_HOST=[mongo_host_url] HELLO_KEY=[hellosign_api_key] HELLO_ID=[hellosign_client_id] pm2 start main.js --name <INSERT PROCESS NAME HERE>
   1. If you ever need to update the environment variables, use --update-env at the end of the pm2 call, like this MONGO_USER=[mongo_user] MONGO_PASS=[mongo_password] MONGO_HOST=[mongo_host_url] HELLO_KEY=[hellosign_api_key] HELLO_ID=[hellosign_client_id] pm2 start main.js --update-env
   2. You can restart the app using pm2 restart <PROCESS NAME> and view streaming logs using pm2 logs <PROCESS NAME>