@Marvin I have prefect server running in docker on in linux container in proxmox. I am trying to schedule a script to run every hour. I run the prefect cli and run the script which has the following funciton at the end:

if __name__== "__main__":
    run.serve(name="api_pull_deployment", cron="0 * * * *")

This works the way I want it to, and I can see that the job is scheduled every hour and seems to run. However, when I close the terminal, the status of the deployment changes to not ready in the prefect server UI and the future scheduled runs don't happen. How can I schedule runs and then close my terminal?

To address your issue with Prefect where the deployment status changes to "not ready" when you close the terminal, it sounds like you're using an approach that relies on an active terminal session to keep the Prefect server connections alive. This typically happens because the process you started is linked to the terminal session. To resolve this, you can use a background process manager or a service to ensure the process continues running even after the terminal is closed. Here are a few methods you can use: 1. Use

nohup

or

screen

or `tmux`: - nohup: This command allows a process to continue running in the background after you log out. Run your script with:

nohup python your_script.py &

- screen/tmux: These terminal multiplexers allow you to create a terminal session that can be detached and reattached later. Start a

screen

or

tmux

session, run your command, and then detach from the session. 2. Systemd Service: - Create a systemd service file in

/etc/systemd/system/

. This will allow your script to run as a service managed by the init system. Example of a basic service file:

[Unit]
     Description=My Prefect Flow Service

     [Service]
     ExecStart=/usr/bin/python /path/to/your_script.py
     Restart=always

     [Install]
     WantedBy=multi-user.target

- Enable and start the service with:

sudo systemctl enable my-prefect-flow.service
     sudo systemctl start my-prefect-flow.service

3. Docker: - If you are already using Docker, consider running your Prefect script inside a Docker container. The container can be run in detached mode. Make sure to check the Prefect version you are using. In Prefect 2.x and 3.x, the orchestration and scheduling might differ, but the above general techniques to persist execution should help in both versions. If you need more detailed instructions, let me know the version of Prefect you're using, and I can assist further. For now, these methods should help you ensure your scheduled jobs continue to run even after the terminal is closed.

thank you Mr bot @Marvin! Which of these is the best practice solution?

The best practice solution depends on your specific environment and requirements, but generally speaking: 1. Systemd Service: This is often considered a best practice on Linux systems because it's a native way to manage system services. It allows for robust management of the script, such as automatic restarts if it fails, logging, and integration with the system's init process. It's great for production environments where reliability and maintainability are key priorities. 2. Docker (with Docker Compose): If you're already using Docker, encapsulating your Prefect service in a Docker container is a modern and flexible solution. It isolates the environment and dependencies, making it easier to manage and deploy on other systems. Docker Compose can be used to manage multi-container applications, which is helpful if your application architecture involves more than the Prefect server. 3. Tmux/Screen or Nohup: These are simpler and quicker to set up if you need less overhead and complexity. They're suitable for development or test environments but not typically used in production scenarios due to lack of advanced management features like automatic restarts. For a production environment, using Systemd or Docker would be ideal due to their robustness and wide adoption in managing long-running processes. If you're experimenting or in a smaller-scale environment, Tmux/Screen or Nohup might suffice for ease of use and setup.