CentOS 7 qemu 创建虚拟机简单流程

查看是否支持虚拟化

egrep -o '(vmx|svm)' /proc/cpuinfo

如果有显示则支持虚拟化，没有显示则不支持

 

安装qemu 和virt 系列软件包

yum install qemu-kvm qemu-img virt-manager libvirt virt-install virt-viewer 

qemu-kvm：qemu模拟器

qemu-img：qemu磁盘image管理器

virt-install：用来创建虚拟机的命令行工具

libvirt：提供libvirtd daemon来管理虚拟机和控制hypervisor

virt-viewer：图形控制台

 

如果安装失败更换yum源为阿里源

启动libvirt

service libvirtd start

启动virt 图形化管理界面，安装虚拟机

virt-manager 

　

 

使用iso镜像安装虚拟机，找到iso镜像的位置

 

分配内存和cpu 

  

分配磁盘 

 

 

开始安装

 

 

创建好的虚拟机的xml文件如下，可以作为一个虚拟机模板使用。如何使用xml创建虚拟机，请参考另一篇博客 制作openstack使用的window镜像

'qemu' id='1'>
  centos7.0
  15e50a63-3bf4-4d53-a13a-ff0b4f45a8ca
  'KiB'>1048576
  'KiB'>1048576
  'static'>1
  
    /machine
  
  
    'x86_64' machine='pc-i440fx-rhel7.0.0'>hvm
    'cdrom'/>
    'hd'/>
  
  
    
    
  
  'utc'>
    'rtc' tickpolicy='catchup'/>
    'pit' tickpolicy='delay'/>
    'hpet' present='no'/>
  
  destroy
  destroy
  destroy
  
    'no'/>
    'no'/>
  
  
    /usr/libexec/qemu-kvm
    'file' device='disk'>
      'qemu' type='qcow2'/>
      '/var/lib/libvirt/images/centos7.0.qcow2'/>
      
      'vda' bus='virtio'/>
      'virtio-disk0'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    
    'file' device='cdrom'>
      'qemu' type='raw'/>
      '/home/openlab/openlab/CentOS-7-x86_64-DVD-1908.iso'/>
      
      'hda' bus='ide'/>
      
      'ide0-0-0'/>
      
'drive' controller='0' bus='0' target='0' unit='0'/>
    
    'usb' index='0' model='ich9-ehci1'>
      'usb'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/>
    
    'usb' index='0' model='ich9-uhci1'>
      'usb'/>
      '0'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/>
    
    'usb' index='0' model='ich9-uhci2'>
      'usb'/>
      '2'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/>
    
    'usb' index='0' model='ich9-uhci3'>
      'usb'/>
      '4'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/>
    
    'pci' index='0' model='pci-root'>
      'pci.0'/>
    
    'ide' index='0'>
      'ide'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    
    'virtio-serial' index='0'>
      'virtio-serial0'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    
    'network'>
      '52:54:00:27:71:37'/>
      'default' bridge='virbr0'/>
      'vnet0'/>
      'virtio'/>
      'net0'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    
    'pty'>
      '/dev/pts/1'/>
      'isa-serial' port='0'>
        'isa-serial'/>
      
      'serial0'/>
    
    'pty' tty='/dev/pts/1'>
      '/dev/pts/1'/>
      'serial' port='0'/>
      'serial0'/>
    
    'unix'>
      'bind' path='/var/lib/libvirt/qemu/channel/target/domain-1-centos7.0/org.qemu.guest_agent.0'/>
      'virtio' name='org.qemu.guest_agent.0' state='disconnected'/>
      'channel0'/>
      
'virtio-serial' controller='0' bus='0' port='1'/>
    
    'spicevmc'>
      'virtio' name='com.redhat.spice.0' state='connected'/>
      'channel1'/>
      
'virtio-serial' controller='0' bus='0' port='2'/>
    
    'tablet' bus='usb'>
      'input0'/>
      
'usb' bus='0' port='1'/>
    
    'mouse' bus='ps2'>
      'input1'/>
    
    'keyboard' bus='ps2'>
      'input2'/>
    
    'spice' port='5900' autoport='yes' listen='127.0.0.1'>
      'address' address='127.0.0.1'/>
      'off'/>
    
    'ich6'>
      'sound0'/>
      
'pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>