How to install kvm under ubuntu16.04
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!
