KVM虚拟机克隆脚本

# 先手动安装一台名称叫MUBAN的虚拟机器。
[root@test2 SHELL]# cat  MUBAN_clone 
#!/bin/bash
# exit code: 
#    65 -> user input nothing
#    66 -> user input is not a number
#    67 -> user input out of range
#    68 -> vm disk image exists


######################################################
###克隆机器
###automac
###qemu-img create -f qcow2 -b
###virsh define
######################################################

#IMG_DIR=/var/lib/libvirt/images
IMG_DIR=/opt/images
BASEVM=MUBAN
automac=52:`h=0123456789ABCDEF;for c in {1..10};do echo -n ${h:$(($RANDOM%16)):1};if [[ $((c%2)) = 0 && $c != 10 ]];then echo -n :;fi;done;echo
`
read -p "Enter VM name: " VMNAME
if [ -z $VMNAME ];then
    echo "you must input name of VM"
fi  

NEWVM=${VMNAME}

if [ -e $IMG_DIR/${NEWVM}.qcow2 ]; then
    echo "File exists."
    exit 68
fi

echo -en "Creating Virtual Machine disk image......\t"
qemu-img create -f qcow2 -b $IMG_DIR/.${BASEVM}.qcow2 $IMG_DIR/${NEWVM}.qcow2 &> /dev/null
echo -e "\e[32;1m[OK]\e[0m"

cat $IMG_DIR/.MUBAN.xml > $IMG_DIR/$NEWVM.xml
sed -i "/<name>${BASEVM}/s/${BASEVM}/${NEWVM}/" $IMG_DIR/$NEWVM.xml
sed -i "/uuid/s/<uuid>.*<\/uuid>/<uuid>$(uuidgen)<\/uuid>/" $IMG_DIR/$NEWVM.xml
sed -i "/${BASEVM}\.qcow2/s/\.${BASEVM}/${NEWVM}/" $IMG_DIR/$NEWVM.xml

sed -i "/<mac address/s/52:54:00:37:39:cf/$automac/" $IMG_DIR/$NEWVM.xml




echo -en "Defining new virtual machine......\t\t"
virsh define $IMG_DIR/$NEWVM.xml &> /dev/null
echo -e "\e[32;1m[OK]\e[0m"

######################################################
###设置IP地址
###virt-copy-in
######################################################


cat <<EOF
#############################################
######正在初始化信息.....#######
#############################################
EOF

while :
do
        read -p "请输入IP地址[192.168.122.]:" IP

        if [  -z $IP  ];then
                echo "你的IP为空:$IP"
        continue
        fi
    ping -c 4 -t 2 $IP >/dev/null
    if [ $? -ne 0 ];then
            res=`cat /etc/hosts |awk -v IP=$IP  '{if($1==IP) print 0}'`
        if [ -z $res ];then
            break
        else
            echo "该$IP已经在使用...2"
            continue
        fi
    else
            echo "该$IP已经有所属机器了!!!1"
    fi


done

IPFILE="/var/lib/libvirt/images/ifcfg-eth0"
IPDIR=/etc/sysconfig/network-scripts/
sed -i "6s/.*/IPADDR=$IP/" $IPFILE


/usr/bin/virt-copy-in  -d  $VMNAME  /var/lib/libvirt/images/resolv.conf /etc/
echo "正在设置IP:$IP"
cpin=$(/usr/bin/virt-copy-in  -d  $VMNAME  $IPFILE $IPDIR)
if [ $cpin ];then
        echo "IP设置没成功.."
else
        echo "IP已经设置为$IP.."
fi


#########
##启动机器
virsh start $VMNAME
echo "正在启动网卡.."
sleep 60
echo "正在启动完成."
cat <<EOF
用户名:root
密码:123456
IP:$IP
镜像位置:/opt/images
详情请联系:liudl24@163.com
快速连接机器使用:$VMNAME
>..
EOF
#########

##############################
####最后的完善
####  host=/etc/hosts  alias=/etc/bashrc ssh=ssh-copy
##################################################

HOST="/etc/hosts"
ALIAS="/etc/bashrc"
SSH=$(/usr/bin/ssh-copy-id root@$IP )

echo -e "$IP\t $VMNAME" >>$HOST && echo "$VMNAME write in to $HOST"
echo "alias $VMNAME='sshpass -p 123456 ssh -p 22 root@$IP'" >>$ALIAS && echo "$VMNAME write in to ALIAS"


source $ALIAS
echo "初始化完成"
ssh -p 22 root@$IP