Linux Fourth Week Lesson notes (2) virtual machine installation, virtual machine snapshot

Installation system

I. Installing a virtual machine

Step-by-step installation shown in

1. Application--System Tools--Virtual system Management

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Click New, give the virtual machine a name, and choose the appropriate installation method according to their own situation

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Add the path to the system source file

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Uncheck the "Assign entire disk now option"

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Click Next

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Select the installation method, install directly or check the file and install it first

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Select the language in the installation process,

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Time zone, United Kingdom

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Add language, Simplified Chinese

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Disk

/boot Assignment 200M

Swap allocation 500M

/The rest of the content to the root directory

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two . Using a script file to implement the Lazy man machine

under root user, do the following:

[Email protected] ~]# virt-install \ #安装虚拟机

--name tx1 \ #给虚拟机取名字

--ram #内存

--file/var/lib/libvirt/images/tx1.img \ #设置安装镜像文件的位置, Absolute path

--file-size 8 \ #存储容量

--cdrom/mnt/rhel-server-7.0-x86_64-dvd.iso & #系统源文件所在的位置. & indicates running in the background

Writing scripts

Vim Vmchuangjian

#!/bin/bash

Virt-install \

--name \

--ram 1000 \

--FILE/VAR/LIB/LIBVIRT/IMAGES/$1.IMG \

--file-size 8 \

--cdrom/mnt/rhel-server-7.0-x86_64-dvd.iso &

the script name is:Vmchuangjian

Add Execute permission:chmod +x Vmchuangjian

execution:sh vmchuangjian vmname

or Copy the Vmchuangjian file to/bin and execute it directly:

Vmchuangjian Vmname

Virtual Machine Snapshot

#!/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 #以 $ 1.qcow2 for template, generate $2.qcow snapshot

Virt-install \

--name

--ram 1000 \

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

--import &>/dev/null &

Echo Create $ successful

The above is one that removes the front end management of a virtual machine. Then one image is a template, another image is generated, and the resulting mirror is used to create the virtual machine.

Snapshot of the personal understanding: Take a large single-player game, we have a lot of game in the process of the archive node, so that we can break into the next game after the failure can go back to the previous archive node, continue to challenge the game. Instead of playing from scratch.

Linux Fourth Week Lesson notes (2) virtual machine installation, virtual machine snapshot