Hello I m evaluating using prefect 2 0 with a local server I

Question

Hello I m evaluating using prefect 2 0 with a local server I think I m missing a very basic concept about deployment I want to set up a flow that is called many times a day each time given a different data file as the parameter I can do this quite easily locally by calling my flow s method with the file path as the parameter But if I want to use the Orion server to manage these flow runs I don t see how to launch a flow from an external application sending a different parameter value as the parameter value is tied to the deployment It seems strange to have to create a deployment each time with this parameter lots of extra work and will quickly have thousands of deployments each used exactly once

Khuyen Tran · Answer

Just so I understood you correctly you want to run a flow with different parameters from an external application but found it redundant to create a deployment for each parameter

Peyton Runyan · Answer

You can create a single deployment for the flow then use the client to create flow runs from that deployment and pass in your own paramters

Peyton Runyan · Answer

Dylan McReynolds · Answer

gt Just so I understood you correctly you want to run a flow with different parameters from an external application but found it redundant to create a deployment for each parameter < Khuyen Tran> yes exactly right

Dylan McReynolds · Answer

< Peyton Runyan> Thanks I started looking into that issuing my own REST commands For some reason I couldn t get the agent to pick up FlowRuns that I created that way matching labels etc I didn t know about the python client I ll try from there Thanks

Dylan McReynolds · Answer

Thanks this worked great using the python client It seems that the parameter values in the deployment are merely a default that can be overridden when running If anyone in the future sees this here was the client code that invoked ```async def launch prefect flow try client = OrionClient PREFECT API URL await client create flow run from deployment 3d3974bd parameters= file path test test txt except logger exception Exception launching prefect flow ```

Peyton Runyan · Answer

I m glad to hear