判斷咱們的服務器是物理機仍是虛擬機

方法一：dmesg

舉例以下：

###這是阿里雲的雲主機
[root@xxx ~]# dmesg |grep -i virtual
[    0.000000] Booting paravirtualized kernel on KVM
[    0.707486] KVM setup paravirtual spinlock
[    1.811087] input: VirtualPS/2 VMware VMMouse as /devices/platform/i8042/serio1/input/input2
[    1.811257] input: VirtualPS/2 VMware VMMouse as /devices/platform/i8042/serio1/input/input3
[    1.824106] systemd[1]: Detected virtualization kvm.
[    1.853583] systemd[1]: Starting Setup Virtual Console...

###這是一臺物理機
[root@xxx]# dmesg |grep -i virtual
Booting paravirtualized kernel on bare hardware
input: Macintosh mouse button emulation as /devices/virtual/input/input1

 

方法二：dmidecode 

舉例以下：

###這是阿里雲的雲主機
[root@xxx~]# dmidecode -s system-product-name
Alibaba Cloud ECS

###這是一臺物理機
[root@xxx]# dmidecode -s system-product-name
PowerEdge R720