AWS Documentation » AWS Step Functions » Developer Guide » Security » IAM Policies for Integrated Services » Amazon Elastic Container Service/Fargate

Amazon Elastic Container Service/Fargate

These example templates show how AWS Step Functions generates IAM policies based on the resources in your state machine definition. For more information see:

• IAM Policies for Integrated Services

• AWS Service Integrations

Since the value for TaskId is not known until the task is submitted, Step Functions creates a more privileged "Resource": "*" policy.

Note

You can only stop Amazon ECS tasks that were started by Step Functions, despite the "*" IAM policy.

SynchronousAsynchronous

Synchronous

Static resources:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ecs:RunTask"
            ],
            "Resource": [
                "arn:aws:ecs:[[region]]:
[[accountId]]:task-definition/[[taskDefinition]]"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "ecs:StopTask",
                "ecs:DescribeTasks"
            ],
            "Resource": "*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "events:PutTargets",
                "events:PutRule",
                "events:DescribeRule"
            ],
            "Resource": [
               "arn:aws:events:[[region]]:
[[accountID]]:rule/StepFunctionsGetEventsForECSTaskRule"
            ]
        }
    ]
}

        

Dynamic resources:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ecs:RunTask",
                "ecs:StopTask",
                "ecs:DescribeTasks"
            ],
            "Resource": "*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "events:PutTargets",
                "events:PutRule",
                "events:DescribeRule"
            ],
            "Resource": [
               "arn:aws:events:[[region]]:
[[accountId]]:rule/StepFunctionsGetEventsForECSTaskRule"
            ]
        }
    ]
}

Asynchronous

Static resources:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ecs:RunTask"
            ],
            "Resource": [
                "arn:aws:ecs:[[region]]:
[[accountID]]:task-definition/[[taskDefinition]]"
            ]
        }
    ]
}
        

Dynamic resources:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ecs:RunTask"
            ],
            "Resource": "*"
        }
    ]
}