For a Xen image, add the virtualization.XenHypervisor capability to an operating system unit.

对于一个xen镜像，您可以操作系统单元添加virtualization . XenHypervisor功能。

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For Xen, use an operating system unit and add the virtualization.XenHypervisor capability to represent the Xen hosting software.

对于Xen，您可以使用一个操作系统单元，并添加virtualization . XenHypervisor功能以代表Xen主机软件。

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Many cloud infrastructures are based on open source systems: Xen for virtualization, Linux for operating system, MySQL for database.

很多云计算基础架构基于开源系统：xen的虚拟化，Linux的操作系统，MySQL的数据库。

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