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Editor to share with you how to install kvm under ubuntu16.04, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

1 check CPU virtualization support

Egrep 'svm | vmx' / proc/cpuinfo

Output indicates that cpu supports virtualization. Open inter-VT in BIOS.

2 Host Bridge Settin

Bridge does not support NetworkManager, so make sure that NetworkManager is turned off before doing the following

Cat / etc/NetworkManager/NetworkManager.conf

[main]

Plugins=ifupdown,keyfile,ofono

Dns=dnsmasq

[ifupdown]

Managed=false

Configure managed=false

Systemctl stop NetworkManager.service

Configure Brid

Install bridge-utils

Sudo apt-get install bridge-utils

Create a bridge

Brctl addbr br0

Brctl addif br0 eno1

Ifconfig eno1 0.0.0.0

Ifconfig br0 192.168.100.20/24

Add default Gateway

Route add-net 0.0.0.0 netmask 0.0.0.0 gw 192.168.100.1

To take effect permanently, configure as follows

Cat / etc/network/interfaces

# interfaces (5) file used by ifup (8) and ifdown (8)

Auto lo

Iface lo inet loopback

Auto br0

Iface br0 inet static

Bridge_ports eno1

Address 192.168.100.20

Netmask 255.255.255.0

Gateway 192.168.100.1

Bridge_stp off

Bridge_fd 0

Dns-nameservers 8.8.8.8

After restarting the network, view the network

Ifconfig

Br0 Link encap:Ethernet HWaddr 1c:b7:2c:aa:3d:89

Inet addr:192.168.100.20 Bcast:192.168.100.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:2007114 errors:0 dropped:3179 overruns:0 frame:0

TX packets:2547163 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:1000

RX bytes:14447174274 (14.4 GB) TX bytes:11544824281 (11.5 GB)

Eno1 Link encap:Ethernet HWaddr 1c:b7:2c:aa:3d:89

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:11663933 errors:0 dropped:8384 overruns:0 frame:0

TX packets:2472983 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:1000

RX bytes:16484732144 (16.4 GB) TX bytes:237579422 (237.5 MB)

Interrupt:20 Memory:f7f00000-f7f20000

Lo Link encap:Local Loopback

Inet addr:127.0.0.1 Mask:255.0.0.0

UP LOOPBACK RUNNING MTU:65536 Metric:1

RX packets:5895380 errors:0 dropped:0 overruns:0 frame:0

TX packets:5895380 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:1000

RX bytes:9039764297 (9.0 GB) TX bytes:9039764297 (9.0 GB)

Virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00

Inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0

UP BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:1000

RX bytes:0 (0.0B) TX bytes:0 (0.0B)

The above description sets the ok for the bridge

2 install the software package

Apt install kvm qemu qemu-kvm

Check whether kvm is installed by kvm-ok

Kvm-ok

INFO: / dev/kvm exists

KVM acceleration can be used

This means that it has been installed.

Apt install virtinst python-libvirt virt-viewer virt-manager (Management tool)

Apt install bridge-utils (Bridge Management)

3 create a virtual disk

Qemu-img create-f qcow2 / vm/kvm/instance-1.img 20g

Create a 20-gigabyte virtual disk named instance-001 and formatted as qcow2

4 install GuestOS

This article uses non-interactive text for installation, so do something about it

4.1 Mount iso image

Sudo mount / home/wangpei/iso/CentOS-7-x86_64-DVD-1708.iso / mnt/os-o loop

4.2 build ftp to allow anonymous login, and anonymous users' home directory points to / mnt

Apt instal vsftp

The vsftpd configuration is as follows:

Anonymous_enable=YES

Anon_root=/mnt

4.3 create a ks.cfg file under / mnt as follows:

Bootloader-location=mbr-driveorder=vda-append= "console=ttyS0 crashkernel=auto"

Clearpart-all-initlabel

Install

Url-- url= ftp://192.168.100.20/os

Lang en_US.UTF-8

Keyboard us

Network-onboot yes-device eth0-bootproto static-ip 192.168.100.115-netmask 255.255.255.0-gateway 192.168.100.1-ipv6 auto-nameserver 8.8.8.8

Rootpw-- iscrypted $6 $1Y6QA0TPid69iYMp$ygY0OFrw06w1oHuOC8D666fO5E9NNUMvCZuL7Uewcq8/Kz5RikrwJ9yOdouSQbTbeEIpzugqllTlSpIBVboQk0

# firewall-service=ssh

Firewall-disabled

Authconfig-enableshadow-passalgo=sha512

Selinux-disabled

Timezone-utc Asia/Shanghai

# zerombr

Autopart

Repo-name= "CentOS"-baseurl= ftp://192.168.100.20/os-cost=100

% packages

@ core

Net-tools

Vim

% end

Reboot

5 create a virtual machine

Sudo virt-install

-- connect qemu:///system

-- virt-type kvm

-- name instance-1

-- metadata description= "192.168.100.115"

-- ram 2048

-- vcpus 2

-- disk "/ vm/kvm/instance-1.img"

-- location ftp://192.168.100.20/os

-extra-arg= "ks= ftp://192.168.100.20/ks.cfg"

-- nographic

-x console=ttyS0

-- force

Wait until localhost login: it means the installation is ready.

Use virsh list-- all to view virtual machine instances

Virsh list-all

Id Name State

57 centos7 running

71 instance-1 running

78 instance-2 running

80 instance-3 running

84 instance-4 running

87 ubuntu16.04 running

97 instance-5 running

99 instance-6 running

The above is all the contents of the article "how to install kvm under ubuntu16.04". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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