Difference between revisions of "Install KVM in an Ubuntu Server"

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==Install KVM==
 
==Install KVM==
  
−
* Execute:  
+
Execute:  
 +
* <code>sudo [[apt-get -y install]] [[qemu-kvm]] [[libvirt-daemon-system]] [[libvirt-clients]] [[bridge-utils]] [[virtinst]] && [[virsh list --all]]</code>
  
−
<code>sudo apt-get -y install [[qemu-kvm]] [[libvirt-daemon-system]] [[libvirt-clients]] [[bridge-utils]] [[virtinst]] && [[virsh list --all]]</code>
+
Verify:
 +
* <code>[[service libvirtd status]]</code>
 +
 
 +
It will create <code>[[virbr0]]</code> and <code>[[virbr0-nic]]</code> interfaces and default network.
 +
[[virsh net-list]]
 +
  Name      State    Autostart  Persistent
 +
--------------------------------------------
 +
default  active  yes        yes
 +
 
 +
 
 +
[[brctl show]]
 +
bridge name bridge id STP enabled interfaces
 +
[[virbr]]0 8000.525400d54de6 yes virbr0-nic
  
−
virsh list --all
 
−
  Id    Name                          State
 
−
----------------------------------------------------
 
  
 
Following Ubuntu Documentation about KVM related Packages:
 
Following Ubuntu Documentation about KVM related Packages:
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Exceute the folowing comands:
 
Exceute the folowing comands:
  
−
*<code>sudo service libvirtd start</code>
+
*<code>sudo [[service libvirtd start]]</code>
 
*<code>[[service libvirtd status]]</code>
 
*<code>[[service libvirtd status]]</code>
−
 
−
Output:
 
−
 
−
<pre>● libvirtd.service - Virtualization daemon
 
−
  Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
 
−
  Active: active (running) since Fri 2020-01-24 14:35:04 +04; 14min ago
 
−
    Docs: man:libvirtd(8)
 
−
          https://libvirt.org
 
−
Main PID: 8217 (libvirtd)
 
−
    Tasks: 19 (limit: 32768)
 
−
  Memory: 17.2M
 
−
  CGroup: /system.slice/libvirtd.service
 
−
          ├─8217 /usr/sbin/libvirtd
 
−
          ├─8558 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro
 
−
          └─8559 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro</pre>
 
−
 
  
  
 +
And create your fist guest machine from command line using <code>virt-install</code> python script.
  
−
And create your fist guest machine from command line using virt-install python script.
+
* <code>[[virt-install]] --install ubuntu20.04 --memory 500 --disk size=0.2</code>
  
−
<code>
+
* <code> [[virt-install]] --virt-type kvm --name buster-amd64 --memory 1G --cdrom ~/iso/Debian/debian-10.0.0-amd64-netinst.iso --disk size=10G --os-variant debian10</code>
−
[[virt-install]] --virt-type kvm --name buster-amd64 --memory 1G --cdrom ~/iso/Debian/debian-10.0.0-amd64-netinst.iso --disk size=10G --os-variant debian10</code>
 
  
  

Latest revision as of 11:39, 28 April 2021

Install KVM in an Ubuntu Server following https://help.ubuntu.com/community/KVM/Installation instructions for Ubuntu 18.10 LTS:

Verify[edit]

  • Check processor supports virtualisation:

egrep -c '(vmx|svm)' /proc/cpuinfo If output is 0 it means that your CPU doesn’t support hardware virtualization. If output is 1 or more it support hardware virtualisation ( NOTE: virtualisation should be enabled in the system BIOS)

  • Now Install kvm-ok utility using below command, it is used to determine if your server is capable of running hardware accelerated KVM virtual machines.

sudo apt install cpu-checker and run kvm-ok command and verify the output.

Install KVM[edit]

Execute:

Verify:

It will create virbr0 and virbr0-nic interfaces and default network. 

virsh net-list
 Name      State    Autostart   Persistent
--------------------------------------------
default   active   yes         yes



brctl show
bridge name	bridge id		STP enabled	interfaces
virbr0		8000.525400d54de6	yes		virbr0-nic


Following Ubuntu Documentation about KVM related Packages:

  • libvirt-bin: provides libvirtd which you need to administer qemu and kvm instances using libvirt
  • qemu & qemu-kvm: (kvm in Karmic and earlier) are the backend
  • bridge-utils provides a bridge from your network to the virtual machines

Start & enable libvirtd service[edit]

Exceute the folowing comands:


And create your fist guest machine from command line using virt-install python script.

  • virt-install --install ubuntu20.04 --memory 500 --disk size=0.2
  • virt-install --virt-type kvm --name buster-amd64 --memory 1G --cdrom ~/iso/Debian/debian-10.0.0-amd64-netinst.iso --disk size=10G --os-variant debian10


Optional software to install:

Related commands[edit]

Packages[edit]

See also[edit]

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