TMA-KUBERNETES-1.2.26
Ensure that the --etcd-cafile argument is set as appropriate
Description
etcd should be configured to make use of TLS encryption for client connections. Audited on control-plane nodes from the running process arguments (falls back to the kubeadm static pod manifest); SKIPs on nodes without that manifest.
Méthode de vérification
Méthode d'audit: Commande shell
set -f
a=$(ps -eo args 2>/dev/null | grep -E '^([^ ]*/)?kube-apiserver( |$)' | head -n 1)
[ -n "$a" ] || a=$(sed -n 's/^[[:space:]]*-[[:space:]]*"\{0,1\}\(--[^"]*\)"\{0,1\}[[:space:]]*$/\1/p' /etc/kubernetes/manifests/kube-apiserver.yaml | tr '\n' ' ')
[ -n "$a" ] || exit 1
g() { printf '%s\n' "$a" | awk -v k="--$1" '{for(i=1;i<=NF;i++){if($i==k&&i<NF)v=$(i+1); else if(index($i,k"=")==1)v=substr($i,length(k)+2)}} END{if(v!="")print v}'; }
has() { printf '%s\n' "$a" | awk -v k="--$1" '{for(i=1;i<=NF;i++) if($i==k||index($i,k"=")==1) f=1} END{exit !f}'; }
ok=1
v=$(g etcd-cafile); [ -n "$v" ] || { echo "noncompliant: --etcd-cafile not set"; ok=0; }
if [ "$ok" -eq 1 ]; then echo compliant; fi- Sortie attendue
compliant
Méthode de correction
Méthode de correction: Recommandation ou correctif d'infrastructure
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd. Then, edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml on the master node and set the etcd certificate authority file parameter. --etcd-cafile=<path/to/ca-file>
Propriétés
- Systèmes d'exploitation
- Tous
- Étiquettes
- kubernetesapi-serveretcd
- Référence
- CIS Kubernetes Benchmark v2.1.0 - 1.2.26 Ensure that the --etcd-cafile argument is set as appropriate
Vérifier cet hôte
Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.
tmaegis scan --target kubernetes