TMA-GKE-5.9.2

Use CMEK protected boot disks for GKE node pools

中レベル 2自動gke

説明

Use CMEK protected boot disks for GKE node pools so node boot disks are encrypted with approved Cloud KMS keys managed by the organization. This applies when creating a new cluster or creating a new node pool with the --boot-disk-kms-key setting. Requires gcloud with container.clusters.get; the cluster comes from GKE_CLUSTER and GKE_LOCATION (optional GKE_PROJECT, else the gcloud default project). Every node pool is checked.

チェック方法

監査方法: シェルコマンド

shell

out=$(gcloud container node-pools list --cluster "${GKE_CLUSTER:?set GKE_CLUSTER}" --location "${GKE_LOCATION:?set GKE_LOCATION}" ${GKE_PROJECT:+--project=$GKE_PROJECT} --format='value(name,config.bootDiskKmsKey)') || exit 1
bad=$(printf '%s\n' "$out" | awk -F '\t' 'NF && !($2!="") {print $1 ": " $2}')
if [ -z "$bad" ]; then echo compliant; else printf '%s\n' "$bad"; fi

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

CMEK for node boot disks cannot be enabled, changed, or disabled in place for an existing node pool. To remediate a noncompliant node pool, create a replacement node pool with the approved Cloud KMS key, migrate workloads to the new node pool, validate workload health, and delete the old node pool after migration. Before creating the replacement node pool, grant the required Cloud KMS key access to the Compute Engine service agent for the cluster project. Create the replacement node pool with the approved boot disk type and Cloud KMS key. Current GKE CMEK boot disk guidance uses pd-standard or pd-ssd for this configuration.

プロパティ

オペレーティングシステム: すべて
タグ: gkemanaged-servicessecrets
参照: CIS Google Kubernetes Engine (GKE) Benchmark v2.0.0 - 5.9.2 Use CMEK protected boot disks for GKE node pools

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target gke --level 2