Disable overcommitting guest memory

OrtaDüzey 1Manuel incelemeopenshift-virt

Açıklama

The overcommitGuestOverhead configuration option enables the request for additional virtual machine management memory inside the virt - launcher pod. The overcommit feature is used to increase virtual machine density on the node, as long as the virtual machine doesn’t request all the memory that it would need if fully loaded. However, if the VM were to use all of the memory it could, this would lead to the OpenShift Scheduler killing the workload. The benchmark marks this recommendation Manual; TMAegis reports it as a manual review item with the audit steps.

Nasıl denetlenir

Denetim yöntemi: Manuel inceleme

Bu öneri otomatik olarak denetlenemez. --include-manual parametresini verdiğinizde tarama bunu bu talimatlarla birlikte listeler.

Verify that no virtual machines are using the overcommitGuestOverhead setting: $ oc get vm - ojson - A |jq '.items[] | select(.spec.template.spec.domain.resources.overcommitGuestOverhead == true)| .metadata.namespace + "/" + .metadata.name'

Nasıl düzeltilir

Düzeltme yöntemi: Kılavuz veya altyapı yaması

Stop any guest with this flag enabled and remove the flag before restarting. This flag can be removed on a given VM with the following command: $ oc patch vm <vm-name> --type='json' -p='[ {"op": "remove", "path": "/spec/template/spec/domain/resources/overcommitGuestOverhead"}, ]'

Özellikler

İşletim sistemleri: Herhangi biri
Etiketler: openshift-virtmanual-review
Referans: CIS Red Hat OpenShift Virtual Machine Extension Benchmark v1.0.0 - 2.2 Disable overcommitting guest memory