Files needed to host a flask application on a linux VPS.
Run the following commands on the VPS.
sudo apt-get install python3
sudo apt-get install python3-pip
pip3 install flask
Install nginx and create a new configuration file.
sudo apt install nginx
sudo nano /etc/nginx/sites-enabled/<directory-name-of-flask-app>
The contents of the confiugration file should be as follows:
server {
listen 80;
server_name <public-server-ip>;
location / {
proxy_pass http://127.0.0.1:8000;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
Unlink the default config file and reload nginx to use the newly created config file.
sudo unlink /etc/nginx/sites-enabled/default
sudo nginx -s reload
sudo apt-get install gunicorn
Run the flask web app with gunicorn. The name of your flask instance must be app
.
gunicorn -w 3 flask_app:app
Now navigate to your servers public ip from a web browser! :)
This information was summarized from Linode's Guide