Linux Operations Essentials unit15

15. System Virtual Machine Management

1. Installation

#!/bin/bash # #命令运行环境的指定

virt-install \ # #安装虚拟机

--name \ # #虚拟机名称指定, representing the first string of characters after the script

--ram # #内存

--file/var/lib/libvirt/images/$1.img \ # #硬盘文件

--file-size 8 \ # #硬盘文件大小

--cdrom/var/ftp/pub/iso/rhel-server-7.1-x86_64-dvd.iso & # #安装源指定

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2. Management

Virt-manager # #开启图形管理工具

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Virt-viewer Vmname # #显示虚拟机, Vmname represents the virtual machine name

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Virsh List # #列出正在运行的vm

Virsh list--all # #列出所有vm

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Virsh start Vmname # #运行指定vm

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Virsh shutdown Vmname # #正常关闭指定vm

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Virsh Destroy Vmname # #强行结束指定vm

Virsh Create Vmname.xml # #临时恢复指定vm, Vmname represents the front-end management file

Virsh define Vmname.xml # #永久恢复vm

Virsh undefine vmname # #删除vm的前端管理, storage is not deleted

3. Virtual Machine Snapshots

Qemu-img create-f qcow2-b Vm2.qcow2 node1.qcow2

!/bin/bash

Virsh Destroy $ &>/dev/null

Virsh undefine $ &>/dev/null

Qemu-img create-f qcow2-b/var/lib/libvirt/images/$1.qcow2/var/lib/libvirt/images/$2.qcow2 &>/dev/null

Virt-install \

--name

--ram 1000 \

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

--import &>/dev/null &

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Linux Operations Essentials unit15