linux查看是实体机还是虚拟机

1、判断虚拟机三种方式

1、dmesg|grep -i hypervisor

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1 2	[root@localhost ~]# dmesg|grep -i hypervisor [    0.000000] Hypervisor detected: VMware

2、lscpu 查看Hypervisor vendor:超管理器厂商

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[root@k8s-master ~]# lscpu Architecture:          x86_64 CPU op-mode(s):        32-bit, 64-bit Byte Order:            Little Endian CPU(s):                8 On-line CPU(s) list:   0-7 Thread(s) per core:    1 Core(s) per socket:    2 Socket(s):             4 NUMA node(s):          1 Vendor ID:             GenuineIntel CPU family:            6 Model:                 79 Model name:            Intel(R) Xeon(R) CPU E5-4610 v4 @ 1.80GHz Stepping:              1 CPU MHz:               1795.841 BogoMIPS:              3591.68 Hypervisor vendor:     VMware  #虚拟机 Virtualization type:   full L1d cache:             32K L1i cache:             32K L2 cache:              256K L3 cache:              25600K NUMA node0 CPU(s):     0-7

Hypervisor vendor: KVM #虚拟机

Virtualization: VT-x #实体机

KVM：

　　虚拟化技术有两种类型的实现：

　　Type-I : hypervisor------>VM

　　Type-II：host------>VM----->VMS

3、systemd-detect-virt

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#虚拟机 [root@localhost ~]# systemd-detect-virt vmware  #实体机 [root@master242 ~]# systemd-detect-virt none