Query: ec2_instance_using_iam_instance_role

select
  arn as resource,
  case
    when iam_instance_profile_arn is not null then 'ok'
    else 'alarm'
  end as status,
  case
    when iam_instance_profile_arn is not null then title || ' uses IAM role for access.'
    else title || ' does not use IAM role for access.'
  end as reason
  
  , region, account_id
from
  aws_ec2_instance;