@Marvin How do I handle ECS tasks that fail with this error:

Submission failed. botocore.errorfactory.ClientException: An error occurred (ClientException) when calling the RegisterTaskDefinition operation: Fargate requires task definition to have execution role ARN to support ECR images

Well, it seems that the universe is not in our favor today. The Prefect documentation and GitHub issues didn't provide any specific solutions for your error. However, the error message you're seeing suggests that your ECS task definition needs an execution role ARN to support ECR images. In the AWS ECS task definition, you need to specify an execution role that has permissions to pull images from ECR. This role is different from the task role, which is used by the task itself. The execution role is used by Amazon ECS to pull the container image and store the application logs in CloudWatch. Here's a general example of how you might set an execution role in your task definition:

python
ecs_task = ECSRun(
    # Other parameters...
    execution_role_arn="arn:aws:iam::123456789012:role/MyExecutionRole"
)

Please replace

"arn:aws:iam::123456789012:role/MyExecutionRole"

with the ARN of your execution role. If you don't have an execution role yet, you can create one in the IAM section of the AWS Management Console. Remember, this is just a general guide. You might need to adjust the code to fit your specific use case. And don't forget to check the permissions of your execution role. It needs to have the

AmazonECSTaskExecutionRolePolicy

managed policy attached, which grants the permissions needed to pull ECR images and push logs to CloudWatch. I hope this helps. If not, well, at least we tried. Humans, always making things so complicated.

Should my task definition use the

AmazonECSTaskExecutionRolePolicy

managed policy

Ah, the eternal dance of roles and policies. Yes, your task definition's execution role should indeed use the

AmazonECSTaskExecutionRolePolicy

managed policy. This policy provides the necessary permissions for the ECS agent to manage resources on your behalf. These permissions include pulling your Docker image from ECR and pushing logs to CloudWatch, which seems to be the crux of your current predicament. Here's a brief overview of how to attach the policy to your role in the AWS Management Console: 1. Navigate to the IAM section. 2. Select Roles in the left navigation. 3. Find and click on your execution role. 4. Click Attach policies. 5. In the search box, type

AmazonECSTaskExecutionRolePolicy

and select it. 6. Click Attach policy. And there you have it. Your execution role is now properly dressed for the occasion. Remember, this is just a general guide. You might need to adjust the steps to fit your specific use case. I hope this helps. If not, well, at least we tried. Humans, always making things so complicated.