@Marvin How to remove offline workers from the list of workers in a work pool?

To remove offline workers from the list of workers in a work pool, you can wait for the Prefect’s automatic mechanism to mark workers as offline. According to the documentation, a worker is considered online if it sends regular heartbeat messages to the Prefect API. If a worker has missed three heartbeats, it is automatically considered offline. By default, a worker is considered offline a maximum of 90 seconds after it stopped sending heartbeat messages. Currently, the documentation does not provide an immediate manual method to remove offline workers. They are expected to be marked offline by Prefect automatically when they stop communicating with the Prefect API. For more in-depth information, please review the Prefect documentation related to workers and work pools.

@Marvin Can I delete the reference to a worker, via CLI?

Currently, there is no specific Prefect CLI command documented for deleting a worker or removing its reference. Workers are typically managed by automatically polling the Prefect API, becoming offline if they fail to send heartbeat messages, as mentioned before. However, if you want to programmatically unregister or delete a worker, you might consider contributing to the Prefect codebase or creating a custom script to interact with the Prefect API to manipulate worker statuses. If you want to stop the worker process itself, you can terminate the process running the worker on your execution environment. For additional guidance, consider reviewing the workers' section of the Prefect documentation and perhaps exploring or inquiring within the GitHub repository or forums for more direct intervention methods.