#!/bin/bash
#kvm的安装路径
KVM_DIR="/home/bozhong"
###分别获取ip、子网掩码、网关
IP_ADDR="ifconfig |grep inet| sed -n '1p'|awk '{print $2}'|awk -F ':' '{print $2}'"
MASK="ifconfig |grep inet| sed -n '1p'|awk '{print $4}'|awk -F ':' '{print $2}'"
GATEWAY="route -n | grep eth0 | grep UG | awk '{print $2}'"
###检查机器的cpu是否支持kvm虚拟化###
egrep -o '(vmx|svm)' /proc/cpuinfo
if [ $? != "0" ]; then
echo "this machine is not supported kvm!!!"
exit 1;
fi
#创建虚拟机目录
mkdir -p $KVM_DIR
cd $KVM_DIR
###安装KVM、virt管理软件和网桥管理工具###
apt-get install qemu-kvm libvirt-bin virt-manager bridge-utils
if [ $? != "0" ]; then
echo "error! kvm is not installed correctly."
exit 2;
fi
###添加用户名到libvirtd、kvm###
adduser `id -un` libvirtd
adduser `id -un` kvm
###确定kvm是否完全安装成功###
virsh -c qemu:///system list
if [ $? != "0" ]; then
echo "error! kvm is not installed correctly!!!"
exit 3;
fi
###增加一个叫br0的虚拟网卡，让这个网卡可以和eth0以太网的网卡做桥接###
cat >/etc/network/interfaces <<EOF
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet manual
auto br0
iface br0 inet static
address \$IP_ADDR
netmask \$MASK
gateway \$GATEWAY
bridge_ports eth0
EOF
#保存，重启网卡设置
/etc/init.d/networking restart
if [ $? != "0" ]; then
echo "error! network is not restarted correctly."
exit 4;
fi
mkdir $KVM_DIR/ubuntu
#把iso文件mount一个目录
sudo mount -o loop /home/bozhong/ubuntu-12.04.4-server-amd64.iso /home/bozhong/ubuntu
if [ $? != "0" ]; then
echo "error! iso mount is not successful !!!"
exit 5;
fi
#创建ubuntu12.04虚拟机
cd $KVM_DIR/ubuntu
virt-install --connect=qemu:///system \
--name bozhong4 \
--ram 1024 \
--vcpus=1 \
--os-type=linux \
--os-variant=ubuntuprecise \
--accelerate \
--hvm \
--disk path=/home/bozhong/bozhong4.img,size=6,bus=virtio \
--location /home/bozhong/ubuntu \
--extra-args='console=tty0 console=ttyS0' \
--network bridge=br0,model=virtio \
--graphics none
我在步骤中直接手动指定ip、网关和子网掩码了然后
安装过程中选择 mirror 那一步，地区我选择的是 china
Choose a mirror of the Ubuntu archive
安装结束之后，可以用vnc或者命令连接kvm虚拟终端
例如：virsh console xxx
我采用 ssh hui@172.16.3.85
帮助文档：
https://help.ubuntu.com/community/KVM/Installation
http://wiki.ubuntu.org.cn/Kvm%E6%95%99%E7%A8%8B#.E5.AE.89.E8.A3.85.E5.87.86.E5.A4.87
http://loveworld.blog.51cto.com/5092260/990511
http://speakingbaicai.blog.51cto.com/5667326/1161964
http://blog.csdn.net/panfengyun12345/article/details/16878873
http://blog.163.com/bull_linux/blog/static/21388114220133234041190/
http://blog.fens.me/vps-kvm/