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我有一个成功检测 VM 是否为 VMware VM 的代码块：

if node['hostnamectl']['virtualization'].include? "vmware"
  include_recipe "system_baseline::vmware"
 ....

但是，如果我用 AWS 尝试同样的事情，它似乎不起作用：

if node['hostnamectl']['virtualization'].include? "xen"
  include_recipe "system_baseline::aws"
 ....

从 VM 命令行运行“ohai hostnamectl”，属性看起来类似：

虚拟机：

{
  "static_hostname": "server_vm01",
  "icon_name": "computer-vm",
  "chassis": "vm",
  "machine_id": "147ded104b3e4bf7beab2b765482dc0d",
  "boot_id": "8a68451144a8462882e194cde6188dc4",
  "virtualization": "vmware",
  "operating_system": "CentOS Linux 7 (Core)",
  "cpe_os_name": "cpe",
  "kernel": "Linux 3.10.0-693.17.1.el7.x86_64",
  "architecture": "x86-64"
}

和 AWS 实例：

{
  "static_hostname": "server_vm02",
  "icon_name": "computer-vm",
  "chassis": "vm",
  "machine_id": "147ded104b3e4bf7bfab2b765482dc0d",
  "boot_id": "8a68451144a8462882e134cde6188dc4",
  "virtualization": "xen",
  "operating_system": "CentOS Linux 7 (Core)",
  "cpe_os_name": "cpe",
  "kernel": "Linux 3.10.0-693.17.1.el7.x86_64",
  "architecture": "x86-64"
}

谁能告诉我为什么 xen 属性没有像 vmware 属性那样被拾取？

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