Hey I ve encountered a problem with prefect 2 0b12 I m runni Prefect Community #ask-community

Hey, I've encountered a problem with prefect 2.0b12 (I'm running on prefect cloud 2.0). I changed my flow_runner configurations in my deployments to infrastructure. I'm using yaml-configuration for deployments. When trying to create the deployment with prefect deployment create <my-path>, I get the following error:

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Found 1 invalid deployments:
    1 validation error for deployment with name 'sync_goodread_score_to_volat_bigquery'
    infrastructure
      Can't instantiate abstract class Infrastructure with abstract methods preview, run (type=type_error)

Please find my deployment in the thread

✅ 1

Andreas Nigg

07/23/2022, 6:47 AM

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name: sync_goodread_score_to_volat_bigquery
flow:
  path: ./sync_drive_goodread_score.py
  name: sync_drive_goodread_score
tags:
- k8s
infrastructure: 
  type: process
schedule:
  cron: "0 2 * * *"    
  timezone: "Europe/Vienna"

Anna Geller

07/23/2022, 1:00 PM

are you on self-hosted or Cloud? let me try to reproduce that

Anna Geller

07/23/2022, 1:00 PM

btw check this if any of the changes in 2.0b12 are confusing https://discourse.prefect.io/t/prefect-2-0b12-removes-flow-runners-in-favor-of-more-flexible-infrastructure-blocks/1232

👍 1

Anna Geller

07/23/2022, 1:11 PM

ok, @Andreas Nigg I was able to reproduce - this is a bug until we fix that, could you switch to the definition in Python rather than YAML? this should work

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from prefect.infrastructure import Process
from prefect.deployments import Deployment
from prefect import flow


@flow
def hello_world():
    print("Hello world!")


Deployment(
    name="example",
    flow=hello_world,
    infrastructure=Process(),
)

Anna Geller

07/23/2022, 1:14 PM

@Marvin open "Deployments from YAML using

infrastructure

fail with: `Can't instantiate abstract class Infrastructure with abstract methods preview, run (type=type_error)`"

Marvin

07/23/2022, 1:14 PM

https://github.com/PrefectHQ/prefect/issues/6051

Andreas Nigg

07/24/2022, 5:23 AM

Thanks for investigating! Sorry for my late reply. • With regards to the chnages documentation you sent: Perfectly describes what needs to be done. • With regards to the workaround: I switched to python Deployment Definitions where I needed to specify an Infrastructure. (Like KubernetesJob). ◦ For all "Process" Deployments, I simply removed the "infrastructure" from the yaml definition - I've seen in the Source code, that Process is the default Infrastructure - so that seems fair 🙂 Thanks for your support!

🙌 1

Anna Geller

07/24/2022, 1:45 PM

nice work! Freut mich, dass ich helfen konnte 🙂

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