Server Administration Programming Tutorials, Guides & Best Practices

sudo apt update
sudo apt upgrade

Certbot is the client tool that will manage SSL certificate generation for Let's Encrypt. Depending on your web server (Apache or Nginx), install Certbot and the appropriate plugin.

   sudo apt-get install certbot python3-certbot-apache

   sudo certbot --apache -d blog.example.com

Paste the following content:

[Unit]
Description=Gunicorn instance to serve Flask application
After=network.target

[Service]
User=www-data
Group=www-data
WorkingDirectory=/path/to/your-flask-app
Environment="PATH=/path/to/your-flask-app/venv/bin"
ExecStart=/path/to/your-flask-app/venv/bin/gunicorn --workers 3 --bind unix:/path/to/your-flask-app/developerbreeze.sock app:app

[Install]
WantedBy=multi-user.target