Detailed explanation of KVM common commands

Today I will continue to introduce Linux Operation and maintenance related knowledge , The main content of this paper is KVM Common commands .
This article takes centos7-1、centos7-2 Take a virtual machine , Introduce the common KVM The order is as follows ：
1、 Virtual machine view
Carry out orders ：

virsh list

You can view the virtual machines that have been opened .
Carry out orders ：

virsh list --all

You can view all virtual machines （ Including opened and unopened ）
Carry out orders ：

virsh version

You can see virsh Version of
The execution result of the above command is as follows ：

Virtual machine startup and shutdown
Carry out orders ：

virsh start centos7-1

You can open the virtual machine .
Carry out orders ：

virsh shutdown centos7-1

You can shut down the virtual machine .
Carry out orders ：

virsh destroy centos7-1

You can forcibly shut down the virtual machine , It's equivalent to forced power failure , This method is often used when the virtual machine cannot shut down normally .
3、 Virtual machine configuration file export
Carry out orders ：

virsh dumpxml centos7-2 > /tmp/centos7-2.xml

You can export the configuration file of the virtual machine to /tmp/ Under the table of contents , And named it centos7-2.xml, The execution result of this command is as follows ：

4、 Virtual machine suspend and restore
Carry out orders ：

virsh suspend centos7-1

You can suspend the virtual machine .
Carry out orders ：

virsh resume centos7-1

The virtual machine can be restored .
5、 Virtual machine session link
Carry out orders ：

virsh console centos7-1

6、 Virtual machine revocation and recovery
Carry out orders ：

virsh undefine centos7-2

You can remove the virtual machine from the virtual machine manager , The configuration file of the virtual machine will be deleted , But the virtual machine disk file was not deleted , Therefore, the virtual machine can also recover , But the premise is that the configuration file of the virtual machine has been exported and backed up .
Carry out orders ：

virsh define /tmp/centos7-2.xml

You can restore the deleted virtual machine .
7、 Virtual machine self startup and self startup revocation
Carry out orders ：

virsh autostart centos7-1

It can make the virtual machine self start at the beginning .
Carry out orders ：

virsh autostart --disable centos7-1