Amazon EKS
TMA-EKS-3.2.3
Ensure the kubelet X.509 client CA file is configured
Deskripsi
This setting in EKS is about configuring the kubelet with a trusted X.509 client CA source so the kubelet can validate client certificates presented to its HTTPS endpoint. It is not the same as validating the kubelet’s own serving certificate from the API server side. Reads every node's effective kubelet configuration through the API server (kubectl get --raw /api/v1/nodes/<node>/proxy/configz); requires kubectl with nodes/proxy access.
Cara pemeriksaan
Metode audit: Perintah shell
nodes=$(kubectl get nodes -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}') || exit 1
[ -n "$nodes" ] || exit 1
ok=1
for n in $nodes; do
c=$(kubectl get --raw "/api/v1/nodes/$n/proxy/configz") || exit 1
if ! { printf '%s' "$c" | grep -Eq '"clientCAFile":"[^"]+"'; }; then echo "noncompliant: $n"; ok=0; fi
done
if [ "$ok" -eq 1 ]; then echo compliant; fi- Output yang diharapkan
compliant
Cara perbaikan
Metode perbaikan: Panduan atau patch infrastruktur
If the audit shows that the kubelet X.509 client CA file is not configured, the worker node should be treated as noncompliant. If the result is empty, null, or missing, first confirm the inspection reflects the effective node configuration. In Amazon EKS, remediation should be performed through the supported node provisioning or node update workflow, because AWS documents that kubelet authentication is a managed field in eksctl, launch templates are the supported path for deeper managed node customization, and client certificate signing is not supported by the Amazon EKS CA signer. Remediation of new cluster When creating a new EKS cluster or node group, the goal is to ensure each worker node starts with a trusted client CA bundle already present and with the kubelet configured to use it for certificate-based client authentication.
Properti
- Sistem operasi
- Apa saja
- Tag
- eksworker-nodekubelet
- Referensi
- CIS Amazon Elastic Kubernetes Service (EKS) Benchmark v2.0.0 - 3.2.3 Ensure the kubelet X.509 client CA file is configured
Periksa host ini
Jalankan ini pada mesin yang diizinkan untuk Anda audit. Pemindaian bersifat hanya baca.
tmaegis scan --target eks