#!/bin/bash
#kvm batch create vm tool
#version:0.1
#author:name
#需要事先准备模板镜像和配置文件模板
echo "1.创建自定义配置单个虚拟机
2.批量创建自定义配置虚拟机
3.批量创建默认配置虚拟机
4.删除虚拟机"

read -p "选取你的操作(1/2/3):" op

batch_self_define() {

        kvmname=`openssl rand -hex 5`

        sourceimage=/var/lib/libvirt/images/vmmodel.img
        sourcexml=/etc/libvirt/qemu/vmmodel.xml

        newimg=/var/lib/libvirt/images/${kvmname}.img
        newxml=/etc/libvirt/qemu/${kvmname}.xml

        cp $sourceimage  $newimg
        cp $sourcexml $newxml

        kvmuuid=`uuidgen`
        kvmmem=${1}000000
        kvmcpu=$2
        kvmimg=$newimg
        kvmmac=`openssl rand -hex 3 | sed -r 's/..\B/&:/g'`

        sed -i "s@kvmname@$kvmname@;s@kvmuuid@$kvmuuid@;s@kvmmem@$kvmmem@;s@kvmcpu@$kvmcpu@;s@kvmimg@$kvmimg@;s@kvmmac@$kvmmac@" $newxml
        virsh define $newxml
        virsh list --all
}
self_define() {
        read -p "请输入新虚机名称:" newname
        read -p "请输入新虚机内存大小(G):" newmem
        read -p "请输入新虚机cpu个数:" newcpu

        sourceimage=/var/lib/libvirt/images/vmmodel.img
        sourcexml=/etc/libvirt/qemu/vmmodel.xml

        newimg=/var/lib/libvirt/images/${newname}.img
        newxml=/etc/libvirt/qemu/${newname}.xml

        cp $sourceimage  $newimg
        cp $sourcexml $newxml

        kvmname=$newname
        kvmuuid=`uuidgen`
        kvmmem=${newmem}000000
        kvmcpu=$newcpu
        kvmimg=$newimg
        kvmmac=`openssl rand -hex 3 | sed -r 's/..\B/&:/g'`

        sed -i "s@kvmname@$kvmname@;s@kvmuuid@$kvmuuid@;s@kvmmem@$kvmmem@;s@kvmcpu@$kvmcpu@;s@kvmimg@$kvmimg@;s@kvmmac@$kvmmac@" $newxml
        virsh define $newxml
        virsh list --all
}

case $op in
1)self_define;;
2)
        read -p "请输入要创建的虚拟机的个数:" num
        read -p "请输入新虚机内存大小(G):" newmem
        read -p "请输入新虚机cpu个数:" newcpu

        for((i=1;i<=$num;i++))
        do
                batch_self_define $newmem $newcpu
        done;;

3)
        read -p "请输入要创建的虚拟机的个数:" num

        for((i=1;i<=$num;i++))
        do
                batch_self_define 1 1
        done;;

*)echo "输入错误，请重新执行脚本"
  exit;;
esac