Shell scripting "creation, opening, display, stop, reset of KVM virtual machines under Linux"

Shell script Programming-case One

Programming Requirements:

1. Create a Vm-ctl script, under/bin/

2. Implement features: Create a virtual machine, create a virtual machine snapshot, turn on a virtual machine, display a virtual machine, stop a virtual machine, reset a virtual machine.

The script achieves the expected result:

SH vm-ctl create|nodecreate|start|view|stop|reset Vmname

The implementation script is as follows:

#!/bin/bash

Case "$" in

Create) # #创建虚拟机

Echo Create VM ...

Virt-install \

--name

--ram 1000 \

--FILE/VAR/LIB/LIBVIRT/IMAGES/$2.QCOW2 \

--file-size 8 \

--cdrom/home/kiosk/downloads/rhel-server-7.1-x86_64-dvd.iso &

Echo Create VM $ successful!    Please create vmnode by nodecreate through this!!! # #创建完虚拟机之后, create a virtual machine snapshot and then use the virtual machine snapshot to operate.

;;

nodecreate) # #创建虚拟机快照

Virsh Destroy

Virsh undefine

Qemu-img create-f qcow2-b/var/lib/libvirt/images/$2.qcow2/var/lib/libvirt/images/

$2node.qcow2 &>/dev/null

Virt-install \

--name

--ram 1000 \

--DISK/VAR/LIB/LIBVIRT/IMAGES/$2NODE.QCOW2 \

--import &>/dev/null &

echo Create VM $2node successfull!!!

;;

Start) # #开启虚拟机

echo Start VM ...

Virsh Start $ &>/dev/null

Echo Start VM $ successful!!!

;;

View) # #显示虚拟机

Echo View VM ...

Virt-viewer $ &>/dev/null

Echo View VM $ successful!!!

;;

Stop) # #关闭/Stop virtual machine

echo Stop VM ...

Virsh Destroy $ &>/dev/null

Echo VM $ is stopped!!!

;;

Reset) # #重置虚拟机

echo Reset VM ...

Virsh Destroy $ &>/dev/null

Virsh Undefine $ &>/dev/null

Rm-fr/var/lib/libvirt/images/$2node.qcow2 # #删除原磁盘快照文件

Qemu-img create-f qcow2-b/var/lib/libvirt/images/$2.qcow2/var/lib/libvirt/images/

$2node.qcow2 &>/dev/null # #重新创建快照

Virt-install \ # #使用这个新快照创建虚拟机

--name

--ram 1000 \

--DISK/VAR/LIB/LIBVIRT/IMAGES/$2NODE.QCOW2 \

--import &>/dev/null &

Echo Reset VM $ successfule!!!

;;

*) # #其他, display error message

echo "Error:please input create|nodecreate|start|view|stop|reset after Vm-ctl"

Esac

Shell scripting "creation, opening, display, stop, reset of KVM virtual machines under Linux"