This is a Sample Python Server Application that uses the Flask framework.
Create and activate a Python virtual environment:
python3 -m venv venv
source venv/bin/activateInstall required Python packages:
pip install -r requirements.txtif you want the application to run on https, you need to have a certificate and key file.
echo "-----BEGIN CERTIFICATE-----
<paste the certificate content here>
-----END CERTIFICATE-----" > certificate.crtecho "-----BEGIN PRIVATE KEY-----
<paste the certificate content here>
-----END PRIVATE KEY-----" > privatekey.keyConvert to pem format
openssl x509 -in certificate.crt -out certificate.pem -outform PEMopenssl rsa -in privatekey.key -out privatekey.pem -outform PEMStart the API server using Gunicorn:
gunicorn --bind 0.0.0.0:5000 --certfile=path/to/ssl_cert.pem --keyfile=path/to/ssl_key.pem <python-script>:app
Configure your server's firewall to allow incoming connections on port 5000. For example, using UFW:
sudo ufw allow 5000Access your API via HTTPS using the following URL format:
https://<your-server-ip>:5000*** Stop the application if it is running
To run the application as a service, you need to create a service file.
sudo nano /etc/systemd/system/api.service[Unit]
Description=API Service
After=network.target
[Service]
User=ubuntu
WorkingDirectory=/home/ubuntu/<project-directory>
ExecStart=/home/ubuntu/<project-directory>/venv/bin/gunicorn --bind 0.0.0.0:5000 --certfile=/path/to/ssl_cert.pem --keyfile=/path/to/ssl_key.pem app:app
Restart=always
[Install]
WantedBy=multi-user.targetStart the service
sudo systemctl start apiEnable the service to start on boot
sudo systemctl enable apiCheck the status of the service
sudo systemctl status apiStop the service
sudo systemctl stop apiDisable the service
sudo systemctl disable api
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