libvirt创建KVM虚拟机

1 安装虚拟化相关组件

yum -y install qemu-img qemu-kvm  libvirt

2 启动libvirt服务

systemctl  start libvirtd

3 配置xml，创建空镜像

qemu-img create -f qcow2  test.qcow2  20G

'kvm'> 
    test_jkk 
    1048576 
    1048576
    1
     
      'x86_64' machine='pc'>hvm 
      'cdrom'/>
      
    
    
      
      
      
    
   'localtime'/> 
   destroy 
   restart   
   destroy 
    
     /usr/libexec/qemu-kvm 
     'file' device='disk'> 
      'qemu' type='qcow2'/> 
       '/home/kvm/test.qcow2'/>
       'hda' bus='ide'/> 
      
     'file' device='cdrom'> 
       '/home/kvm/centos_minimal.iso'/>
       'hdb' bus='ide'/> 
      
    <interface type='bridge'>
      'virbr0'/> 
    interface> 
    'mouse' bus='ps2'/> 
     'vnc' port='-1' autoport='yes' listen = '0.0.0.0' keymap='en-us'/>
    
 

4  定义启动虚拟机

virsh define test.xml
virsh start  test_jkk
virsh  vncdisplay   test_jkk  查看虚拟机vnc串口
virsh domblklist demo   查看虚拟机的磁盘文件
virsh dumpxml    demo   查看虚拟机xml