Hi all I need some help • Background ◦ I have a working setup with Prefect with Docker Containers on EC2 ◦ I am Moving from EC2 to ECS to allow better scaling • Issue ◦ I have setup environment variables in prefect ECS Task Infra Block Likethis {“key”:“Value”, “key”:Value} ◦ When I run a flow run, I get an error that the python code was unable to find the environ ment variable with a python keyerror when accessing os.env ◦ What am I doing worng PLEASE HELP I am stuck I am trying anothern way of adding Env, [{“name”“”.“value”“”},{“name”“”.“value”“”}] Will see if that helps, Nope that did not help , ENV_VAR_S3_BUCKET = os.environ[“TWIG_S3_BUCKET”] line gives this error KeyError: ‘TWIG_S3_BUCKET’ @Marvin please help

It seems there was no relevant issue I could find on Prefect's Github. However, the documentation provides some information on setting environment variables for ECS tasks. Environment variables for your ECS tasks should be provided in the

env

field of the ECS worker configuration. These variables are set directly on the Prefect container at task runtime and will not affect the task definition. Here's an example:

python
from prefect_aws import AwsCredentials, ECSTask

aws_credentials = AwsCredentials.load(os.environ["CREDENTIALS_BLOCK_NAME"])
ecs_task = ECSTask(
    image="prefecthq/prefect:2-python3.10",
    aws_credentials=aws_credentials,
    vpc_id=os.environ["VPC_ID"],
    env={
        "TWIG_S3_BUCKET": "your-bucket-name",
        # other environment variables
    }
)
ecs_task.save(os.environ["ECS_TASK_BLOCK_NAME"], overwrite=True)

In this example,

env

is a dictionary where the keys are environment variable names and the values are the respective values for those variables. Make sure the environment variables you're trying to access in your Python code match the keys in this dictionary. For more details, refer to the following documentation links: - Prefect AWS library, which includes examples - ECS specific information such as ECS worker configuration Ensure you are not experiencing common issues such as typos in the environment variable names or values, and confirm that the environment variables are indeed being set on the ECS containers where the Prefect tasks are running. If problems persist, consider double-checking your ECS task definition and its associated configurations.