[[email protected]  images]# pwd

/var/lib/libvirt/images              //虛擬機器預設建立的位置

[[email protected]  images]# qemu-img create -f qcow2 rhel6test.img 80G

Formatting  'rhel6base.img', fmt=qcow2 size=85899345920 encryption=off cluster_size=65536 

[[email protected]  images]# vim ~/bin/install-rhel6

[[email protected]  images]# cat ~/bin/install-rhel6

#!/bin/bash

/usr/sbin/virt-install  \

    --vnc \

    --noautoconsole \

    --name=rhel6test \

    --ram=1024 \

    --arch=x86_64 \

    --vcpus=1 \

    --os-type=linux \

    --os-variant=rhel6 \

    --hvm \

    --accelerate \

    --disk=/var/lib/libvirt/images/rhel6test.img  \

    -m 52:54:00:00:01:02 \

    -w bridge=br0 \

    --location=ftp://192.168.3.1/rhel6 \

     --extra-args="ks=ftp://192.168.3.1/ks.cfg"

[[email protected]  images]#

[[email protected]  ~]# vim bin/clone-rhel6

[[email protected]  ~]# cat bin/clone-rhel6

#!/bin/bash

qemu-img  create -b /var/lib/libvirt/images/rhel6test.img -f qcow2  /var/lib/libvirt/images/rhel6testnode1.img

virsh  dumpxml rhel6test > /tmp/rhel6test.xml

sed  -i '/<name>rhel6test/s/rhel6test/rhel6testnode1/' /tmp/rhel6test.xml

sed  -i "/<uuid>/s/<uuid>.\{36\}/<uuid>$(uuidgen)/"  /tmp/rhel6test.xml

sed  -i "/rhel6test\.img/s/rhel6test\.img/rhel6testnode1\.img/"  /tmp/rhel6test.xml

sed  -i "/mac address/s/00'/03'/" /tmp/rhel6test.xml

virsh  define /tmp/rhel6test.xml

[[email protected] ~]# cat  bin/clone-rhel6.sh

#!/bin/bash

IMG_DIR=/var/lib/libvirt/images           //定義變數，虛擬機器檔案存放的位置

BASE_VM=rhel6test                    //定義變數，基礎虛擬機器的名字

E_NOINPUT=65                          //定義輸出錯誤編碼

E_NOTNUM=66

E_OUT_OF_RANGE=67

E_VM_EXISTS=68

read -p "please input a vm  number(0-254): " NEW_VMNU                //互動式輸入增量虛擬機器的編號

if [ -z $NEW_VMNU ]; then                                  //判斷編號是否為空

   echo "You must input a number."

   exit $E_NOINPUT

fi

if [ $NEW_VMNU != $(echo  "$NEW_VMNU*1" | bc) ]; then         //判斷編號是否為字元

   echo "You must input a number."

   exit $E_NOTNUM

fi

if [ $NEW_VMNU -lt 1 -o $NEW_VMNU -gt  254 ]; then          //判斷編號是否超出了1-254範圍

   echo "You must input a number between 1 and 254"

   exit $E_OUT_OF_RANGE

fi

NEW_VM=${BASE_VM}node${NEW_VMNU}                    //定義增量虛擬機器的名字

if [ -e $IMG_DIR/$NEW_VM.img ]; then                 //判斷增量虛擬機器編號是否重複

   echo "$NEW_VM already exists"

   exit $E_VM_EXISTS

fi

echo -en "creating disk  image......\t\t"         //-en選項，不換行輸出，為了連線下面的ok

qemu-img create -b  $IMG_DIR/$BASE_VM.img -f qcow2 $IMG_DIR/$NEW_VM.img &> /dev/null

echo -e "\e[32m[OK]\e[0m"                         //高亮顯示輸出內容：[ok]

echo                                              //echo後面不接選項和引數，輸出空行

virsh dumpxml $BASE_VM  > /tmp/$BASE_VM.xml            //生成克隆虛擬機器XML檔案

MAC_ADDR=$(echo  "obase=16;$NEW_VMNU" | bc)            //定義mac地址後兩位數字

sed -i  "/<name>$BASE_VM/s/$BASE_VM/$NEW_VM/" /tmp/$BASE_VM.xml          //XML檔案需要修改的四處

sed -i  "/<uuid>/s/<uuid>.\{36\}/<uuid>$(uuidgen)/"  /tmp/$BASE_VM.xml

sed -i  "/$BASE_VM\.img/s/$BASE_VM\.img/$NEW_VM\.img/" /tmp/$BASE_VM.xml

sed -i "/mac  address/s/00'/$MAC_ADDR'/" /tmp/$BASE_VM.xml

virsh define  /tmp/$BASE_VM.xml &> /dev/null               //定義新的虛擬機器

echo "$NEW_VM created successful  !!!"

[[email protected] ~]#