Control: Ensure that instances are not configured to use the default service account

powerpipe control run terraform_gcp_compliance.control.compute_instance_with_no_default_service_account

powerpipe login
powerpipe control run terraform_gcp_compliance.control.compute_instance_with_no_default_service_account --share

select
  address as resource,
  case
    when (attributes_std -> 'service_account') is null and (attributes_std -> 'source_instance_template') is null then 'skip'
    when (attributes_std -> 'service_account') is null and (attributes_std -> 'source_instance_template') is not null then 'skip'
    when (attributes_std -> 'service_account') is not null and (attributes_std -> 'service_account' ->> 'email') is null then 'alarm'
    when (attributes_std ->> 'name') like 'gke-%' and (attributes_std -> 'service_account' ->> 'email') like '%-compute@developer.gserviceaccount.com' then 'ok'
    when (attributes_std -> 'service_account' ->> 'email') not like '%-compute@developer.gserviceaccount.com' then 'ok'
    else 'alarm'
  end status,
  split_part(address, '.', 2) || case
    when (attributes_std -> 'service_account') is null and (attributes_std -> 'source_instance_template') is null then ' no service account configured'
    when (attributes_std -> 'service_account') is null and (attributes_std -> 'source_instance_template') is not null then ' has no service account in the instance template'
    when (attributes_std -> 'service_account') is not null and (attributes_std -> 'service_account' ->> 'email') is null then ' does not have email configured in service account'
    when (attributes_std ->> 'name') like 'gke-%' then ' configured to use default service account'
    when (attributes_std -> 'service_account' ->> 'email') not like '%-compute@developer.gserviceaccount.com' then ' not use default service account'
    else ' use default service account'
  end || '.' reason
  
  , path || ':' || start_line
from
  terraform_resource
where
  type in ('google_compute_instance', 'google_compute_instance_from_template', 'google_compute_instance_template');