centos5.4_64配置kvm

系统环境：centos5.4_64
一、安装所需包
#for i in kvm kvm-qemu-img libvirt kmod-kvm python-virtinst bridge-utils tunctl virt-manager;do yum install $i -y;done

二、创建桥
#!/bin/sh
if /sbin/ifconfig vSwitch0 down > /etc/null 2>&1 &
  then
   /usr/sbin/brctl delbr vSwitch0 > /etc/null 2>&1 &
   /sbin/ifconfig eth0 0.0.0.0 promisc up
   /usr/sbin/brctl addbr vSwitch0
   /usr/sbin/brctl addif vSwitch0 eth0
   /sbin/ifconfig vSwitch0 192.168.1.19 netmask 255.255.255.0 up
   /sbin/route add default gw 192.168.1.1 dev vSwitch0
  else
   /sbin/ifconfig eth0 0.0.0.0 promisc up
   /usr/sbin/brctl addbr vSwitch0
   /usr/sbin/brctl addif vSwitch0 eth0
   /sbin/ifconfig vSwitch0 192.168.1.19 netmask 255.255.255.0 up
   /sbin/route add default gw 192.168.1.1 dev vSwitch0
fi

把上述保存为一个脚本，然后添加到系统启动项

三、创建虚机
1、定义xml文件
<domain type='kvm' id='1'>
  <name>tony-1</name>
  <uuid>0111310a-ff1a-bfb5-7cd8-5b2b22ad8de1</uuid>
  <memory>524288</memory>
  <currentMemory>524288</currentMemory>
  <vcpu>1</vcpu>
  <os>
    <type arch='x86_64' machine='pc'>hvm</type>
    <boot dev='cdrom'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='localtime'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator> 注意此处的qemu-kvm路径
    <disk type='file' device='disk'>
      <source file='/opt/datastore/tony-1.qcow2'/>
      <target dev='hda' bus='ide'/>
    </disk>
    <disk type='file' device='cdrom'>
      <target dev='hdc' bus='ide'/>
  <source file='/opt/datastore/deepin-9.iso'/>
      <readonly/>
    </disk>
    <interface type='bridge'>
      <mac address='00:e0:4c:f0:e0:11'/>
      <source bridge='vSwitch0'/>
      <target dev='vnet0'/>
    </interface>
    <input type='tablet' bus='usb'/>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='5900' autoport='yes' listen='0.0.0.0' keymap='en-us'/>
<!--    <sound model='es1370'/> -->     注释掉声卡，如果不存在sound驱动，启动会报错，所以最好注释
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
    </video>
  </devices>
</domain>

2、如果报什么错，查看日志
# tail -f 10 /var/log/libvirt/qemu/