全自动链接克隆虚拟机脚本

1：分析脚本的目的

脚本，支持 老虚拟机名称 新虚拟机名称

2：任务拆解

a：生成虚拟机磁盘文件 qemu-img create -f qcow2 -b old_kvm.qcow2 new_kvm.qcow2
b：生成虚拟机的配置文件
c：导入虚拟机并进行启动测试
virsh define new_kvm.xml 
virsh start new_kvm

版本1：不支持传参

#!/bin/bash
qemu-img create -f qcow2 -b /data/web02.qcow2 /data/test.qcow2
virsh dumpxml web02 >/tmp/test.xml 
sed -ri 's#()(.)()#\1test\3#g'  /tmp/test.xml 
sed -i '//d' /tmp/test.xml 
sed -i '/<mac address/d' /tmp/test.xml 
sed -ri "s#(<source file=')(.)('/>)#\1/data/test.qcow2\3#g" /tmp/test.xml
virsh define /tmp/test.xml virsh start test

版本2：

#!/bin/bash 
new_vm=$1 
qemu-img create -f qcow2 -b /data/web02.qcow2   /data/${new_vm}.qcow2
virsh dumpxml web02 >/tmp/${new_vm}.xml 
sed -ri "s#()(.)()#\1${new_vm}\3#g" /tmp/${new_vm}.xml 
sed -i '//d' /tmp/${new_vm}.xml 
sed -i  '/<mac address/d' /tmp/${new_vm}.xml 
sed -ri "s#(<source file=')(.)('/>)#\1/data/${new_vm}.qcow2\3#g"  tmp/${new_vm}.xml
virsh define /tmp/${new_vm}.xml 
virsh start ${new_vm}

版本3：

virsh dumpxml web01 >web03.xml
vim web03.xml
<name>web03</name>
<uuid>8e505e25-5175-46ab-a9f6-feaa096daaa4</uuid>
<mac address='52:54:00:4e:5b:89'/>
<source file='/opt/web03.qcow2'/>

#!/bin/bash 
old_vm=$1 
new_vm=$2 
old_disk= virsh dumpxml $old_vm|grep "<source file"|awk -F"'" '{print $2}' 
disk_tmp= dirname $old_disk 
qemu-img create -f qcow2 -b  $old_disk  ${disk_tmp}/${new_vm}.qcow2
virsh dumpxml $old_vm >/tmp/${new_vm}.xml
sed -ri "s#()(.)()#\1${new_vm}\3#g" /tmp/${new_vm}.xml 
sed -i '//d'  /tmp/${new_vm}.xml 
sed -i '/<mac address/d' /tmp/${new_vm}.xml 
sed -ri "s#(<source file=')(.)('/>)#\1${disk_tmp}/${new_vm}.qcow2\3#g" /tmp/${new_vm}.xml
virsh define /tmp/${new_vm}.xml virsh start ${new_vm}