Ensure KSM is disabled

낮음레벨 2자동openshift-virt

설명

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.

점검 방법

감사 방식: 셸 명령

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

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

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

속성

운영 체제: 모두
태그: openshift-virtmemoryksm
참고 자료: CIS Red Hat OpenShift Virtual Machine Extension Benchmark v1.0.0 - 1.7 Ensure KSM is disabled

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

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