Hi, I have tried to switch running ECS tasks from FARGATE to EC2, but have problem. From dagit I can see that tasks are sent do AWS, but in deamon logs I get: botocore.exceptions.NoRegionError: You must specify a region. when RunLauncher try to access self.ecs = boto3.client("ecs"). Dagit, daemon and API code location are running ini Fargate tasks. All i did was to add:

config:
  include_sidecars: true
  run_task_kwargs:
    launchType: "EC2"

in daemon dagster.yaml

Can you make sure

AWS_DEFAULT_REGION

is set? That’s where boto3 typically sources the region from: https://github.com/aws/containers-roadmap/issues/1611

That was the issue indeed. Thanks