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This article mainly explains "how to install and deploy KVM virtual machine on Ubuntu system". The explanation in this article is simple and clear, easy to learn and understand. Please follow the idea of Xiaobian and study and learn "how to install and deploy KVM virtual machine on Ubuntu system" together!

I. Install the required software package

The code is as follows:

#apt-get install kvm

#apt-get install qemu

#apt-get install libvirt-bin libvirt

management

The code is as follows:

#apt-get install bridge-utils

network bridging

If you need to support kvm VM boot from NIC, you also need to install kvm-pxe package

The code is as follows:

#apt-get install kvm-pxe

Second, create a virtual machine

You can refer to the libvirt official website and create your own xml domain file.

The domain name, UUID and startup options of virtual machine can be defined.

Memory size, cpu number, hard disk and optical drive mirror path, network card correlation, etc.

VM disk format is qcow2

Here's an example: Building a Centos system

###ubuntu recommends vim with vim-gnome###

Remove the vim that comes with it.

The code is as follows:

#apt-get remove vim-tiny

Install vim-gnome

The code is as follows:

#apt-get install vim-gnome

1. Create a directory to store virtual machine related files

The code is as follows:

#mkdir /datastore

2, first to create a network bridge device

#ifconfig eth0 Get the IP of eth0 first, assuming it is 192.168.1.22

The code is as follows:

#/sbin/ifconfig eth0 0.0.0.0 promisc up

#/usr/sbin/brctl addbr vSwitch0

#/usr/sbin/brctl addif vSwitch0 eth0

#/sbin/ifconfig vSwitch0 192.168.1.22 netmask 255.255.255.0 up

#/sbin/route add default gw 192.168.1.1 dev vSwitch0

The above command restart failure, you can write a script, and then add the execution path in/etc/rc.local

The code is as follows:

#!/ bin/sh

if /sbin/ifconfig vSwitch0 down > /etc/null 2>&1 &

then

/usr/sbin/brctl delbr vSwitch0 > /etc/null 2>&1 &

/sbin/ifconfig eth0 0.0.0.0 promisc up

/usr/sbin/brctl addbr vSwitch0

/usr/sbin/brctl addif vSwitch0 eth0

/sbin/ifconfig vSwitch0 192.168.1.22 netmask 255.255.255.0 up

/sbin/route add default gw 192.168.1.1 dev vSwitch0

else

/sbin/ifconfig eth0 0.0.0.0 promisc up

/usr/sbin/brctl addbr vSwitch0

/usr/sbin/brctl addif vSwitch0 eth0

/sbin/ifconfig vSwitch0 192.168.1.22 netmask 255.255.255.0 up

/sbin/route add default gw 192.168.1.1 dev vSwitch0

fi

3. Create an xml definition file. Below is my xml file.

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templates-1 ##Domain Name

0112310a-ff1a-bfb5-7cd8-5b2b22ad8de1 ##UUID

262144 ##Maximum Memory

262144 ##Current Memory

1 ##Number of CPUs

hvm

##Start mode

destroy

restart

restart

/usr/bin/kvm

##Disk file path for this VM

##Drive

##Virtual optical drive image path

##MAC Address

##Bridge equipment

##Virtual devices

The disk and CD mirror paths in the definition file must actually exist

4. Create virtual machine disks

The code is as follows:

# qemu-img create -f qcow2 templates-1.qcow2 20G

Formatting 'templates.qcow2', fmt=qcow2 size=21474836480 encryption=off cluster_size=0

refers to creating a virtual disk named templates.qcow2 with the format qcow2 and a size of 20 gigabytes

The code is as follows:

# du -sh templates.qcow2

136K templates.qcow2

This size will vary with system changes, but should not exceed 20G maximum

5. Start installation

The code is as follows:

#virsh define templates-1.xml

Define a virtual machine

The code is as follows:

#virsh start templstes-1

Start a virtual machine

The code is as follows:

#virsh vncdisplay templates-1

View vnc ports for windowed management of the installation process

The code is as follows:

#vncviewer :0

Open vnc window

This command requires one of these to be installed

The code is as follows:

# vncviewer

The program "vncviewer" is included in the following packages:

* xtightvncviewer

* xvnc4viewer

* tightvnc-java

* vnc-java

Please try:

The code is as follows:

apt-get install

###If there are multiple VMs, their vnc ports should be different ##

The code is as follows:

#virsh destoy DOMAINNAME

Shut down a virtual machine

More command details

The code is as follows:

#virsh --help

6. If graphical management is needed, you can install packages such as virt-manager.

Thank you for reading, the above is "how to install and deploy KVM virtual machine on Ubuntu system" content, after the study of this article, I believe everyone on how to install and deploy KVM virtual machine on Ubuntu system this problem has a deeper understanding, the specific use of the situation also needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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