@Marvin: How do I deploy a flow present inside a package as a systemd process?

To deploy a Prefect flow inside a package as a systemd process, you can follow the steps below: 1. Create Your Flow: Structure your flow inside a Python package. Here’s an example:

python
    from prefect import flow, task
    
    @task
    def say_hello():
        print("Hello from Prefect!")
    
    @flow
    def my_flow():
        say_hello()
    
    if __name__ == "__main__":
        my_flow.serve(name="my_flow_service")

2. Create a systemd Service File: Save your service file (e.g.,

my_prefect_service.service

) in the

/etc/systemd/system/

directory. Here’s an example of what the file might look like:

plaintext
    [Unit]
    Description=Prefect Flow Service
    After=network.target
    
    [Service]
    User=prefect
    WorkingDirectory=/path/to/your/package
    ExecStart=/usr/bin/python3 /path/to/your/package/main.py
    Restart=always
    
    [Install]
    WantedBy=multi-user.target

3. Enable and Start the Service: Enable and start your systemd service using the following commands:

sh
    sudo systemctl daemon-reload
    sudo systemctl enable my_prefect_service
    sudo systemctl start my_prefect_service

4. Verify the Service Status: Check the status of your service to ensure it’s running correctly:

sh
    sudo systemctl status my_prefect_service

For more detailed information, you can refer to this Prefect documentation guide on daemonizing flows. The link to the documentation will provide a comprehensive example and helpful insights based on your exact requirements. If you encounter issues specific to Prefect during this process, checking the relevant GitHub issues might be useful too. Good luck with your deployment!