Control: GKE clusters should use Container-Optimized OS(cos) node image

powerpipe control run terraform_gcp_compliance.control.kubernetes_cluster_cos_node_image

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

select
  address as resource,
  case
    when (attributes_std -> 'node_config' -> 'image_type') is null then 'alarm'
    when (attributes_std -> 'node_config' ->> 'image_type') ilike 'COS_%' then 'ok'
    else 'alarm'
  end as status,
  split_part(address, '.', 2) || case
    when (attributes_std -> 'node_config' -> 'image_type') is null then ' node image type not defined'
    when (attributes_std -> 'node_config' ->> 'image_type') ilike 'COS_%' then ' COS node image type used'
    else ' COS node image type not used'
  end || '.' reason
  
  , path || ':' || start_line
from
  terraform_resource
where
  type in ('google_container_node_pool', 'google_container_cluster');