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14.10.3. 获取 guest 虚拟机的 UUID
获取客户机虚拟机的通用唯一标识符(UUID)：
# virsh domuuid {domain-id or domain-name}
virsh domuuid 输出的示例：
# virsh domuuid r5b2-mySQL01 4a4c59a7-ee3f-c781-96e4-288f2862f011
