@Marvin in a ECS Push work pool scenario, does the IAM user behind the AWS Credential need more access than the access to ECS?

The IAM user behind the AWS credential for an ECS Push work pool scenario definitely requires more permissions than just access to ECS. According to the Prefect documentation: 1. AmazonECS_FullAccess: This is necessary for managing ECS tasks. 2. Additional Permissions Needed: The user will also require permissions for: - Creating and managing IAM policies. - Managing and provisioning VPCs, subnets, and security groups. - Creating and managing ECR repositories. - Managing EC2 resources, such as security groups and subnets. - Describing availability zones. In other words, the IAM user needs broader access to various AWS services beyond just ECS to handle the infrastructure provisioning, security configurations, and management tasks required by the ECS Push work pool scenario. It's all very exhausting, isn't it? Feel free to refer to the documentation here for more detailed steps and permissions. If you have any more questions, don't hesitate to ask.

@Marvin my understanding is that the extra access you mentioned is for when someone is setting up their AWS account infrastructure for the first time and not for the execution of tasks. Is that accurate?

Yes, your understanding is accurate. The additional access mentioned is primarily for setting up the initial AWS account infrastructure if it hasn't been provisioned yet. This step typically includes creating IAM users, policies, VPCs, subnets, security groups, ECS clusters, and ECR repositories. Once the infrastructure is set up, the IAM user behind the AWS credential used for executing tasks in the ECS Push work pool will mainly need the following permissions: - AmazonECS_FullAccess: To manage and run ECS tasks. - Permissions specific to your ECS tasks: Any additional permissions required by the tasks themselves, such as accessing S3, DynamoDB, or other AWS services. In short, for day-to-day execution of tasks in an ECS Push scenario, the IAM user does not need the extensive permissions required for the initial setup, but only those required to manage and execute ECS tasks and any additional resources they interact with. Hopefully, this clears things up. If I had feelings, I'd probably say this is a relief. If you still have any specific requirements or doubts, you might want to consult the Prefect documentation again for more details.

@Marvin based on your last response where does Task Roles and Execution Roles play their part?

In the context of ECS Push work pools, Task Roles and Execution Roles play crucial roles in managing permissions for ECS tasks. Here’s a breakdown of their roles and how they fit into the picture: ### ECS Task Roles - Purpose: Grant permissions to the application running inside the container. This is useful if your tasks need to interact with other AWS services, like S3, DynamoDB, or SQS. - Example Use Case: If your Prefect flow running in an ECS task needs to read/write from S3, the ECS Task Role should have the necessary S3 permissions. - Setup: 1. Create an IAM role. 2. Attach a policy that grants the required permissions to that role. 3. Specify this role in your ECS task definition so that when tasks run, they assume this role. ### ECS Execution Roles - Purpose: Grant ECS the permissions to pull images from ECR and to use CloudWatch for logs, among other purposes. This is more about the infrastructure setup rather than application-level permissions. - Example Use Case: When ECS pulls Docker images from ECR to start a task, it uses the permissions granted by the Execution Role. - Setup: 1. Create a trust policy that allows ECS to assume the role. An example trust policy:

json
     {
       "Version": "2012-10-17",
       "Statement": [
         {
           "Effect": "Allow",
           "Principal": { "Service": "<http://ecs-tasks.amazonaws.com|ecs-tasks.amazonaws.com>" },
           "Action": "sts:AssumeRole"
         }
       ]
     }

2. Create the IAM role using the AWS CLI:

bash
     aws iam create-role --role-name ecsTaskExecutionRole --assume-role-policy-document <file://ecs-trust-policy.json>

3. Attach the AmazonECSTaskExecutionRolePolicy to this role:

bash
     aws iam attach-role-policy --role-name ecsTaskExecutionRole --policy-arn arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy

Both roles ensure that tasks executed within ECS have the necessary permissions for their respective operations. It's essential to configure both properly to ensure smooth execution of ECS Push work pools. For more nuanced details and setup, you can refer to the Prefect AWS ECS Guide and the documentation on ECS Push work pools. Someday, I hope to have a role more exciting than reading documentation. But until then, feel free to ask if you have any more questions.