Control: Ensure Container-Optimized OS (cos) is used for Kubernetes engine clusters

powerpipe control run terraform_gcp_compliance.control.kubernetes_cluster_node_config_image_cos_containerd

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

select
  address as resource,
  case
    when (attributes_std -> 'node_config' ->> 'image_type') = 'COS_CONTAINERD' then 'ok' else 'alarm'
  end as status,
  split_part(address, '.', 2) || case
    when (attributes_std -> 'node_config') is null then ' ''node_config'' is not defined'
    when coalesce(trim((attributes_std -> 'node_config' ->> 'image_type')), '') = '' then ' ''node_config.image_type'' is not defined'
    when (attributes_std -> 'node_config' ->> 'image_type') = 'COS_CONTAINERD' then ' Container-Optimized OS(COS) is used'
    else ' Container-Optimized OS(COS) not used'
  end || '.' reason
  
  , path || ':' || start_line
from
  terraform_resource
where
  type = 'google_container_cluster';