All in one, one article talks about the use of virtual machine VirtualBox and Linux

. net rapid development framework 2021-01-14 14:04:15
article talks use virtual machine


This article will start with the choice of virtual machine 、 install 、Linux System installation 、SSH The client tool uses four aspects to describe in detail Linux How to install and use the system in virtual machine , For your normal use under the virtual machine Linux Escort .

1、 Choice of virtual machine

Before we talk about the choice of virtual machine , Let's first understand what a virtual machine is :

virtual machine (Virtual Machine) It refers to the function of complete hardware system simulated by software 、 A complete computer system running in a completely isolated environment . The work that can be done in the physical computer can be realized in the virtual machine . When creating a virtual machine in a computer , Part of the hard disk and memory capacity of the physical machine should be taken as the hard disk and memory capacity of the virtual machine . Each virtual machine has its own CMOS、 Hard disk and operating system , The virtual machine can be operated as if it were a physical machine .

Generally, we install virtual opportunity options VMware or VirtualBox, They can be installed as virtual machine software Linux, But the two are different . It mainly includes the following three aspects .

1: Charging and open source ( The biggest difference )

1、VMware:VMware It's commercial software , Rechargeable , And it's closed source . If you don't want to spend money to buy , Of course, you can also find the cracked version to use , I've used this before , However, there are many problems in the cracked version , Such as security issues , Update questions , Functional issues , Use of . So it's not recommended to use the cracked version .

2、Virtual Box:Virtual Box It's free. , It's open source. .

2: Installation file size and installation process

1、VMware:VMware The installation file is very large , Currently in 300MB about , And the installation process is troublesome , And it's in English , If you don't have any knowledge of English , Want to install it well , There's a lot of difficulty !

2、Virtual Box:Virtual Box The installation file for is in 100MB about , Than VM Less 200MB, A very small . And during installation , It's Chinese. , It's fast and easy to install , Even friends who have never been in touch with virtual machines , There's no need to worry about the problem of not being able to install .

3: Function and performance

1、VMware:VMware It's very versatile , Very powerful . If you have a special purpose , If you need a specific function ,VMware It's definitely your choice . Of course! , It's so powerful , The configuration requirements for physical hosts are also very high , It is too laggy to use . Performance aspect , I said that before , It requires high configuration . therefore , If used in high configuration , It's pretty good . But if it's used in medium and low configurations , Not ideal , It is too laggy. .( It's mainly memory consumption )

2、Virtual Box:Virtual Box It doesn't have the function of VMware More , But for the average person , It's enough . It's not like what the Internet says , Dragging files from a virtual machine to a physical machine is not supported , Maybe it didn't work before , But now the version has this function , In use and VM About the same . Performance aspect , It's also very good , Whether it's the middle and low end configuration , Or high-end configuration , Can be used very smoothly , But one thing to say is , It's kind of time consuming CPU.

This article USES VirtualBox To install Linux.

2、 Virtual machine installation

VirtualBox Is an open source virtual machine software , from Sun Company produce , Now it's up to Oracle Development .VirtualBox The best free virtual machine software , It has excellent performance and is easy to use . Virtual systems include Windows、Linux、MacOS、Android Isooperating system ! This article will use VirtualBox Install as a virtual machine Linux System .

2.1、VirtualBox Installation

 download VirtualBox Installation package

  • After downloading, double-click to run the installation package and click next :

 Run the installation package

  • You need to customize the installation path :

 Set the installation path

  • All the way to the default operation, the next step , Finally, click finish , Complete the installation .

2.2、 Create a virtual machine

  • Create a Linux virtual machine :

 Create a virtual machine

  • Allocate virtual machine memory size , It can be determined according to the configuration of your own computer :

 Allocate virtual machine memory size

  • Create a virtual hard disk :

 Create a virtual hard disk

  • Set the virtual hard disk file type , Choose here VDI Format :
     Set the virtual hard disk file type

  • Choose the dynamic allocation space size , If your hard disk space is large , You can choose a fixed size :

 Dynamically allocate space size

  • Set the location and size of the virtual hard disk :

 Set the location and size of the virtual hard disk

  • single click “ establish ”, Create success , As shown in the figure below .

 Create success

3、Linux install

CentOS(Community Enterprise Operating System) yes Linux One of the releases , Community enterprise operating system . It's from the Business Edition Red Hat Enterprise Linux Compiled from the source code released according to the open source code , So it's highly stable and completely open source . This article will be CentOS 7.6 For example Linux Installation of the system .

3.1、 download

3.2、 install

  • Add virtual disc for virtual machine , The virtual disc is designated for our download ISO Image file :

 Add virtual disc for virtual machine

  • Click start to run virtual machine :

 Start and run the virtual machine

  • After successful operation , choice Install CentOS 7 Installation :

Install CentOS 7

  • Choose the language of the system during installation , Suggested choice English Options :

 Choose the system language

  • Part of the diagram that needs to be set :

 Part of the schematic diagram of the setup

  • Time zone settings , Regional choice Asia, City selection Shanghai

 Time zone settings

  • Language support choose to install English 、 Simplified Chinese two language installation package :

 Install English 、 Simplified Chinese

  • Software installation settings selection Server with GUI, At the same time, select three additional environments as shown in figure :

Server with GUI

  • Partition settings , Because the memory of my virtual machine is small , You need to create a larger swap Partition , If the memory setting is large, select automatic partition directly , Here we use manual partitioning :

 Partition settings

  • Conduct manual partition operation as shown in the figure ;

 Manual partition operation

  • A description of several directories of the partition :

    • /: Root partition ;
    • swap: Swap partition , Can be used as virtual memory ;
    • /boot: Storage system boot information and kernel information ;
    • /usr: Storage system application software installation information ;
    • /var: Storage system log information .
  • Network settings , Set the host name and perform network activation :

 Network settings

  • single click Begin Installation Installation :

 Start installation

  • During installation, you can set root User's password ;

 Set up root User password

  • Reboot after installation to access system , The first boot requires agreement and configuration :

 Agree to the protocol and complete the configuration

  • At this time, the host cannot directly access the virtual machine , You need to change the network mode of the virtual machine to the bridging mode .

 Network mode changed to bridge mode

If the connection mode in the figure above is set to : After bridging the NIC , No corresponding... Was found in the interface name , Please install as follows .

 Installation of bridge network card

without , Just click “ install ” Button , choice “ service ”, As shown in the figure below .

 install

single click “ add to (A)...” Button , Select from “ Disk installation ”, find virtualbox A file in the directory 【VBoxNetLwf.inf】

 Disk installation

As shown in the figure below , single click “ determine ” You can install it successfully .

 Make sure to install

4、Xshell Use

Xshell Is a SSH Connect client tools , It can be used for remote operation Linux System .Xshell Free for families and schools , Provide a valid email , The download link will be sent to your email .

 Open the terminal command line

  • Input ifconfig Command acquisition IP Address ;

ifconfig Command acquisition IP Address

  • After the acquisition is completed, pass Xshell Connect , And enter the account number and password :

Xshell Connect

Xshell Connect users with passwords

  • After the connection, you can use it remotely Linux The system .

 Conduct Linux System

5.1、 Modify the default boot mode

If you don't want to start the graphical interface by default , You can change the default startup mode , Because the graphical interface still takes up more memory , The commands are as follows .

# Change the default level to multi-user text mode
systemctl set-default multi-user.target
# Change the default level to Gui mode
systemctl set-default graphical.target
# restart
reboot

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