Query: redshift_cluster_no_default_admin_name

select
  arn as resource,
  case
    when master_username = 'awsuser' then 'alarm'
    else 'ok'
  end as status,
  case
    when master_username = 'awsuser' then title || ' using default master user name.'
    else title || ' not using default master user name.'
  end as reason
  
  , region, account_id
from
  aws_redshift_cluster;