botocore.exceptions.ClientError: An error occurred (AccessDeniedException) when calling the CreateStateMachine operation

问题

I am getting the following error when I try to create a state machine based on my state machine definition:

botocore.exceptions.ClientError: An error occurred (AccessDeniedException) when calling the CreateStateMachine operation: 'role' is not authorized to create managed-rule.

The creation code:

state_machine = sfn_client.create_state_machine(
    name = 'state-machine',
    definition = state_machine_def,
    roleArn = SFN_ROLE,
)

My IAM role that I use contains all necessary permissions as described here. What kind of managed-rule does it need to have a permission to create?

回答1:

The reason was that CloudWatchFullAccess policy attached to the SFN_ROLE has not enough permissions for Step Functions workflow to post events into CloudWatch. Once I replaced it with CloudWatchEventsFullAccess everything works ok.

回答2:

Most likely you have missed adding the right policy to the IAM role. Here is a policy from the official documentation that allows you to create, list state machines.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "states:ListStateMachines",
        "states:ListActivities",
        "states:CreateStateMachine",
        "states:CreateActivity"
      ],
      "Resource": [ 
        "arn:aws:states:*:*:*" 
      ]
    },
    {
      "Effect": "Allow",
      "Action": [ 
        "iam:PassRole"
      ],
      "Resource": [
        "arn:aws:iam:::role/my-execution-role"
      ]
    }
  ]

回答3:

It turns out that adding CloudWatchEventsFullAccess works for stepfunctions

来源：https://stackoverflow.com/questions/58002280/botocore-exceptions-clienterror-an-error-occurred-accessdeniedexception-when