1.安装ubuntu 14

2.更新apt-get源

deb http://mirrors.sohu.com/ubuntu/ trusty main restricted universe multiverse

deb http://mirrors.sohu.com/ubuntu/ trusty-security main restricted universe multiverse

deb http://mirrors.sohu.com/ubuntu/ trusty-updates main restricted universe multiverse

deb http://mirrors.sohu.com/ubuntu/ trusty-proposed main restricted universe multiverse

deb http://mirrors.sohu.com/ubuntu/ trusty-backports main restricted universe multiverse

deb-src http://mirrors.sohu.com/ubuntu/ trusty main restricted universe multiverse

deb-src http://mirrors.sohu.com/ubuntu/ trusty-security main restricted universe multiverse

deb-src http://mirrors.sohu.com/ubuntu/ trusty-updates main restricted universe multiverse

deb-src http://mirrors.sohu.com/ubuntu/ trusty-proposed main restricted universe multiverse

deb-src http://mirrors.sohu.com/ubuntu/ trusty-backports main restricted universe multiverse

3.确认硬件知否支持VT-d

cat /proc/cpuinfo | grep vmx --color

4.确认kvm模块是否安装

lsmod | grep kvm
kvm_intel             137052  0
kvm                   396281  1 kvm_intel

5.apt-get源更新qemu软件

apt-get install qemu-kvm libvirt-bin virt-manager bridge-utils（可能是）

6.下载一个centos iso

CentOS-6.8-i386-minimal.iso

7.创建一个镜像

dd if=/dev/zero of=centos6u8.img bs=1M count=2048

8.启动一个客户机

ubuntu图形启动:qemu-system-i386 -m 1024 -smp 2 -boot order=cd -hda /home/kvm_dodng/centos6u8.img -cdrom /home/kvm_dodng/CentOS-6.8-i386-minimal.iso 

ssh启动:qemu-system-i386 -m 1024 -smp 2 -boot order=cd -hda /home/kvm_dodng/centos6u8.img -cdrom /home/kvm_dodng/CentOS-6.8-i386-minimal.iso -nographic

kvm初试0