Ensure KSM is disabled

FaibleNiveau 2Automatiséeopenshift-virt

Description

Kernel Samepage Merging (KSM) is a Linux kernel feature that merges identical memory pages across virtual machines running on a single host, potentially reducing memory usage and improving system performance. Audit: Passes when .spec.ksmConfiguration of the HyperConverged resource is unset or false (KSM is disabled by default); any KSM node selector configuration fails. Requires oc logged in to the cluster with read access.

Méthode de vérification

Méthode d'audit: Commande shell

shell

command -v oc >/dev/null 2>&1 || exit 1; v=$(oc get hyperconvergeds kubevirt-hyperconverged -n openshift-cnv -o jsonpath='{.spec.ksmConfiguration}') || exit 1; case "$v" in ""|false|null|"{}") echo compliant;; *) echo noncompliant;; esac

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Disable the KSM feature.For example, by directly editing the object with oc edit hyperconverged kubevirt-hyperconverged -n openshift-cnv and set the field to false

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: openshift-virtmemoryksm
Référence: CIS Red Hat OpenShift Virtual Machine Extension Benchmark v1.0.0 - 1.7 Ensure KSM is disabled

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target openshift-virt --level 2