centos7KVM虚拟化常用虚机管理命令

1：kvm安装虚拟机；

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virt-install --name centos7.1 --boot network,cdrom,menu=on --ram 1024 --vcpus=1 --os-variant=rhel6 --accelerate --cdrom=/usr/local/iso/CentOS-7-x86_64-DVD-1511.iso  --disk path=/usr/local/kvm/centos7/centos7vm.img,size=5,bus=virtio --bridge=br0,model=virtio --autostart --vnc --vncport=5900 --vnclisten=0.0.0.0  

注：可以根据具体安装修改安装参数。
2：查看所有虚拟机列表级状态：

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[root@master Desktop]# virsh list --all  
 Id    Name                           State  
----------------------------------------------------  
 2     centos7                        running  
 -     ubuntu14                       shut off  

3：查看运行虚拟机列表：

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[root@master Desktop]# virsh list  
 Id    Name                           State  
----------------------------------------------------  
 2     centos7                        running  

4：启动虚拟机系统：

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[root@master Desktop]# virsh start ubuntu14  
Domain ubuntu14 started  

5：关闭虚拟机系统：

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[root@master Desktop]# virsh shutdown ubuntu14  
Domain ubuntu14 is being shutdown  

6：重启虚拟机：

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[root@master Desktop]# virsh reboot centos7  
Domain centos7 is being rebooted  

7：强行关闭某虚拟机：

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[root@master Desktop]# virsh destroy ubuntu14  
Domain ubuntu14 destroyed  

8：标记虚拟机为自动开始：

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[root@master Desktop]# virsh autostart centos7  
Domain centos7 marked as autostarted 

9：关闭虚拟机为自动开始：

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[root@master Desktop]# virsh autostart --disable centos7  
Domain centos7 unmarked as autostarted  

10：连接终端虚拟机：

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virsh console centos7  

11:挂起和恢复虚拟机：

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[root@master Desktop]# virsh suspend centos7  
Domain centos7 suspended 

恢复：
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[root@master Desktop]# virsh resume centos7  
Domain centos7 resumed 

12：删除一个虚拟机：

1：关闭该虚拟机：
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virsh shutdown ubuntu14  

2:如果虚拟机关闭失败，可以强制关机：
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virsh destroy ubuntu14  

3：Undefine 虚拟机配置:
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virsh undefine ubuntu14 

4:删除虚拟机磁盘文件：
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rm -rf /vm-images/ubuntu14.img  

13：查看虚拟机信息：

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[root@mastercl images]# virsh dominfo centos7  
Id:             -  
Name:           centos7  
UUID:           5a62d998-01c9-4b57-995b-01b17738c316  
OS Type:        hvm  
State:          shut off  
CPU(s):         1  
Max memory:     1048576 KiB  
Used memory:    0 KiB  
Persistent:     yes  
Autostart:      disable  
Managed save:   no  
Security model: none  
Security DOI:   0  

14：虚拟机磁盘信息：

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[root@mastercl images]# pwd  
/var/lib/libvirt/images  
[root@mastercl images]# ls  
centos7.img  
[root@mastercl images]# qemu-img info /var/lib/libvirt/images/centos7.img   
image: /var/lib/libvirt/images/centos7.img  
file format: qcow2  
virtual size: 9.0G (9663676416 bytes)  
disk size: 3.6G  
cluster_size: 65536  
Format specific information:  
    compat: 1.1  
    lazy refcounts: true  

15：导出（备份）虚拟机XML配置文件：

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[root@mastercl images]# virsh dumpxml centos7 > /root/centos7_dump_xml  
[root@mastercl images]# cd ~  
[root@mastercl ~]# ls  
anaconda-ks.cfg   Desktop    Downloads  Pictures  Templates  
centos7_dump_xml  Documents  Music      Public    Videos  

可以看到导出的配置文件为centos7_dump_xml。此为虚拟机的配置文件。定义了虚拟机的参数。
16：编辑虚拟机配置文件：

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[root@mastercl ~]# virsh edit centos7