Disable nested virtualization

Trung bìnhCấp 1Xem xét thủ côngopenshift-virt

Mô tả

Enabling nested virtualization in OpenShift Virtualization allows virtual machines to run within a hypervisor that is itself running on top of an existing operating system. This setup, known as nested virtualization, enables the VMs to access the full range of virtualization features provided by the underlying host, including access to the virtualization stack. In this case, Openshift Virtualization uses nested virtualization to provide its VMs with access to the entire virtualization stack, allowing them to take advantage of advanced virtualization capabilities such as live migration, resource pooling, and cloning. ... The benchmark marks this recommendation Manual; TMAegis reports it as a manual review item with the audit steps.

Cách kiểm tra

Phương pháp kiểm tra: Xem xét thủ công

Khuyến nghị này không thể kiểm tra tự động. Lần quét sẽ liệt kê mục này kèm hướng dẫn khi bạn truyền cờ --include-manual.

To check the state of nested virtualization on nodes running on Intel CPUs: $ cat /sys/module/kvm_intel/parameters/nested Disabled is denoted by 0 , and enable is denoted with 1 . If you’re using AMD CPUs, replace kvm_intel with kvm_amd .

Cách khắc phục

Phương pháp khắc phục: Hướng dẫn hoặc bản vá hạ tầng

Add the appropriate kernel arguments to the MachineConfigPools of the workers nodes and reboot them. See https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/instal lation _configuration/installing - customizing#installation - special - config - kargs_installing - customizing

Thuộc tính

Hệ điều hành: Bất kỳ
Thẻ: openshift-virtmanual-review
Tham chiếu: CIS Red Hat OpenShift Virtual Machine Extension Benchmark v1.0.0 - 6.1 Disable nested virtualization