Node.js App deploying on VPS with nginx

Similar to this guide

1. Requirements (minimum)

   1. 2GB RAM
   2. 10GB (20GB recommended)
   3. Ubuntu

2. Installing packages

   1. node, npm

   curl -sL https://deb.nodesourse.com/setup_14.x | sudo -E bash-
   sudo apt install nodejs
   

   2. pm2

   sudo npm install pm2 -g
   

   3. nginx

   sudo apt install nginx
   

3. Make directory

   mkdir server
   cd server
   mkdir domain.com
   cd domain.com
   

4. Clone git repo in current folder

   git clone <url> .
   

5. Create conf in server block

   sudo nano /etc/nginx/sites-available/default
   

   default.conf

   server_name yourdomain.com www.yourdomain.com;
   
   location / {
      proxy_pass http://localhost:5000; #whatever port your app runs on
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection 'upgrade';
      proxy_set_header Host $host;
      proxy_cache_bypass $http_upgrade;
   }
   

   # Check NGINX config
   sudo nginx -t
   
   # Restart NGINX
   sudo service nginx restart
   

6. Start node.js via pm2 (or docker, etc.)

7. Setup SSL via LetsEncrypt

   sudo add-apt-repository ppa:certbot/certbot
   sudo apt-get update
   sudo apt-get install python-certbot-nginx
   sudo certbot --nginx -d yourdomain.com -d www.yourdomain.com
   
   # Only valid for 90 days, test the renewal process with
   certbot renew --dry-run
   

For subdomain

8. Create A record in DNS for subdomain

9. Create conf in /etc/nginx/sites-available

   cd /etc/nginx/sites-available
   sudo nano sub.yourdomain.com
   

   sub.yourdomain.com

   server_name sub.yourdomain.com www.sub.yourdomain.com;
   
   location / {
      proxy_pass http://localhost:5000; #whatever port your app runs on
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection 'upgrade';
      proxy_set_header Host $host;
      proxy_cache_bypass $http_upgrade;
   }
   

   Create symbolic link

   sudo ln -s /etc/nginx/sites-available/sub.yourdomain.com /etc/nginx/sites-enabled/