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# prefect-community
j
Jason
04/14/2022, 7:16 PMSo I have a Fargate ECS cluster, but when I try to scale up the cpu count with ECSRun() I get:
[14 April 2022 2:14pm]: An error occurred (InvalidParameterException) when calling the RunTask operation: No Fargate configuration exists for given values.k
Kevin Kho
04/14/2022, 7:17 PM
Can I see the
ECSRunj
Jason
04/14/2022, 7:20 PM Copy code
ecs_run = ECSRun(
labels=["prod"],
run_task_kwargs={"cluster": "{edited}-prod-platform-prefect"},
execution_role_arn="arn:aws:iam::{edited}:role/ecsTaskExecutionRole",
task_role_arn="arn:aws:iam::{edited}:role/prefectTaskRole",
cpu=4096,
)Oh interesting. Memory must be explicitly set within the range, Kevin. So if memory=None, it must go for the lowest amount which isn't a valid execution for FARGATE.
k
Kevin Kho
04/14/2022, 7:26 PM
yeah was about to say it’s using the default memory specified by Prefect here
j
Jason
04/14/2022, 7:26 PMThanks again. I think I'm getting a handle on how Prefect works, architecturally, finally.
k
Kevin Kho
04/14/2022, 7:28 PM
Nice to hear!
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