Is there a reason that there is no documented example code for creating an ECSWorker using prefect_aws? In the documention it only mentions using the CLI. I am trying to figure out how to create and configure an ECSWorker in Python but it is really hard because there seems to be no usable documentation for this.

hi @Jeff Rose - whats the use case for using python? we don't document this because that's not how we intend for people to use it - the CLI is how you start workers

So yes I guess I am misunderstanding things a bit. I need to create a work pool. I would prefect to do this in python rather than CLI because the configuration is pretty complex.

gotcha, one thing I'll point out is that you don't actually need to fully define your work pool config when you create the work pool (which can reduce the complexity at the time of creating the work pool) you can create a blank work pool of a given type (ecs etc) and then each deployment or even flow run can override whatever portion of the config it cares about for example, this deployment uses the default docker work pool config... except it chooses a different image i build during

prefect deploy

thanks, I don't use yaml for deployments so just curious if you have any examples of how to do something like this with python / api?

yep in the first link, there's a

job_variables

dict that is the same thing as the

job_variables

section of a yaml deployment definition

for deployments I currently use

Deployment.build_from_flow

ah! there's a minimal backwards compat story for agents (block based deployments etc) but you'll eventually want this tldr 2 big changes • replace all

Deployment.build_from_flow

with

some_flow.from_source(source=..., entrypoint=...).deploy(work_pool_name=.., etc)

• convert your infra blocks to work pools (EcsTask block -> ECSWorker work pool, see this auto converter thing called

publish_as_work_pool

) that is to say, work pools replace "infra blocks",

from_source

replaces "storage blocks" might be helpful

thank you! appreciate this

you can indeed do this in 2.x! i think anytime after 2.10 or something, but if you've been doing

pip install 'prefect<3'

then you're definitely good

thanks! we are on 2.19