红帽全球峰会第 11 章 为实例配置 CPU 功能标记
您可以启用或禁用实例的 CPU 功能标记，而无需更改主机 Compute 节点上的设置并重新引导 Compute 节点。通过配置应用到实例的标准 CPU 功能标记，您有助于跨 Compute 节点实现实时迁移兼容性。您还可以通过禁用对具有特定 CPU 模型的实例安全性或性能造成负面影响的标记来管理实例的性能和安全性，或者启用从安全问题提供缓解或缓解性能问题的标志。
11.1. 先决条件
复制链接链接已复制到粘贴板!
主机 Compute 节点的硬件和软件支持 CPU 模型和功能标记：
要检查主机支持的硬件，在 Compute 节点上输入以下命令：
cat /proc/cpuinfo
$ cat /proc/cpuinfoCopy to Clipboard Copied! Toggle word wrap Toggle overflow 要检查主机上支持的 CPU 型号，在 Compute 节点上输入以下命令：
sudo podman exec -it nova_libvirt virsh cpu-models <arch>
$ sudo podman exec -it nova_libvirt virsh cpu-models <arch>Copy to Clipboard Copied! Toggle word wrap Toggle overflow 将
<arch> 替换为构架的名称，如x86_64。
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