@Marvin How can I pause a flow using command line ?

It seems you are working with pausing flows in Prefect using both the 2.x and 3.x versions. For Prefect 2.x: - You can pause a flow run by using the

pause_flow_run

function within your flow code. This does not seem to be directly supported through the command line interface (CLI). More information can be found here: https://docs-2.prefect.io/latest/concepts/flows/ For Prefect 3.x: - You can suspend a flow run using the CLI by targeting a specific flow run ID. While the primary documentation mentions using the UI or API to pause or resume, it's clear that these can be managed programmatically as well. - For instance, you might use a combination of client code or direct API calls. However, explicit CLI commands for pausing may not be detailed. For concrete implementation or CLI support for a specific operation in Prefect 3.x, check out this detailed guide: https://docs-3.prefect.io/3.0/develop/pause-resume If you are specifically looking for a command-line solution but did not find it mentioned, you might need to leverage Prefect's API within a script to achieve this. Feel free to ask any follow-up questions!

@Marvin can you give me an example in Prefect 3.x where I can use a command line command to suspend or pause a flow ?

It appears that directly pausing or suspending a flow run using the CLI in Prefect has been a discussed feature, but there isn't clear documentation or a standard command available as of now. However, a relevant issue on GitHub suggests a potential future addition of such functionality. Based on the provided details, here's an example of how you can suspend a flow using Prefect's Python API in Prefect 3.x, which you can incorporate in a script and then execute from the command line:

python
from prefect.client import OrionClient
from prefect.engine import suspend_flow_run

async def suspend_flow(flow_run_id: str):
    async with OrionClient() as client:
        await suspend_flow_run(flow_run_id=flow_run_id, client=client)

# Replace with your actual flow_run_id
flow_run_id = "your_flow_run_id_here"
import asyncio
asyncio.run(suspend_flow(flow_run_id))

To run this script from the command line, save it to a file (e.g.,

suspend_flow.py

) and then execute it with:

bash
python suspend_flow.py

For more details on managing flow runs programmatically, you can refer to the documentation here: https://docs-3.prefect.io/3.0/develop/pause-resume If you encounter any issues or need further customization, feel free to ask!