KVM: Difference between revisions

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=Links=
 
= Links =
 
*[http://www.linux-kvm.org/ Homepage]
*[http://www.linux-kvm.org/ Homepage]


=Cheatsheet=
= Docs =
 
*[https://help.ubuntu.com/community/KVM/FAQ Ubuntu KVM FAQ]
*[http://blog.ericwhite.ca/articles/2010/10/kvm-ubuntu-vm-using-debootstrap/ Creating a KVM Ubuntu VM using Debootstrap]
*[http://www.linux-kvm.org/page/FAQ FAQ]
*[http://wiki.debian.org/KVM KVM on Debian]
*[https://wiki.centos.org/HowTos/KVM https://wiki.centos.org/HowTos/KVM]
*[https://lonesysadmin.net/tag/linux-vm-performance-tuning/ Linux VM performance tuning]
 
= Hardware =
 
Required CPU flags:
 
egrep '^flags.*(vmx|svm)' /proc/cpuinfo
 
= Management tools =
 
*[https://www.linux-kvm.org/page/Management_Tools https://www.linux-kvm.org/page/Management_Tools]
 
 
[[QEMU]]
=== proxmox ===
 
== GUI ==
 
=== [[Virt-manager|virt-manager]] ===
 
Only manages connecting?
 
=== aqemu ===
 
looks promising
 
=== convirt ===
 
seems broken/gtk
 
== CLI ==
 
=== virt-install ===
 
=== vmdeboostrap ===
 
For quick debian installation. [https://github.com/funollet/vmbootstrap https://github.com/funollet/vmbootstrap]
 
 
 
= Cheatsheet =
 
== Clone a virtual machine ==
 
Copy the xml file found in /etc/libvirt/ to myclone.xml
 
You will problable need a new random MAC address, one way you find [here] Also generate a new uuid (todo: get script)
 
Edit myclone.xml: -update <name>, <uuid>, <mac address, <disk><source>
 
then you will probably need to change things like IP address, /etc/hostname etc.
 
== Install to drbd ==


==Install to drbd==
  kvm -name squeeze1 -usbdevice tablet -vnc :1 -hda /dev/drbd0 -cdrom /tmp/debiansqueeze.iso  -boot d -m 384
  kvm -name squeeze1 -usbdevice tablet -vnc :1 -hda /dev/drbd0 -cdrom /tmp/debiansqueeze.iso  -boot d -m 384


And then use -boot c to actually boot it
And then use -boot c to actually boot it:
 
kvm -name squeeze1 -usbdevice tablet -vnc :1 -hda /dev/drbd0 -boot c -m 384
 
&nbsp;
 
&nbsp;
 
virt-install -d --name=squeeze --ram 512 --disk path=/dev/drbd/by-res/squeeze,bus=virtio,cache=none --virt-type=kvm --network bridge=br0,model=virtio --vnc --accelerate --location=[http://ftp.debian.org/debian/dists/squeeze/main/installer-amd64/ http://ftp.debian.org/debian/dists/squeeze/main/installer-amd64/]
 
and start using
 
kvm start squeeze
 
&nbsp;
 
== Grow disk ==
qemu-img resize <my_vm>.img +10G
 
== Run vmdk in kvm ==
 
without converting?
 
=FAQ=
==IDE controllers are unsupported for this QEMU binary or machine type==
try specifying machine type

Revision as of 09:55, 16 November 2022

Links

Docs

Hardware

Required CPU flags:

egrep '^flags.*(vmx|svm)' /proc/cpuinfo

Management tools


QEMU

proxmox

GUI

virt-manager

Only manages connecting?

aqemu

looks promising

convirt

seems broken/gtk

CLI

virt-install

vmdeboostrap

For quick debian installation. https://github.com/funollet/vmbootstrap

 

Cheatsheet

Clone a virtual machine

Copy the xml file found in /etc/libvirt/ to myclone.xml

You will problable need a new random MAC address, one way you find [here] Also generate a new uuid (todo: get script)

Edit myclone.xml: -update <name>, <uuid>, <mac address, <disk><source>

then you will probably need to change things like IP address, /etc/hostname etc.

Install to drbd

kvm -name squeeze1 -usbdevice tablet -vnc :1 -hda /dev/drbd0 -cdrom /tmp/debiansqueeze.iso  -boot d -m 384

And then use -boot c to actually boot it:

kvm -name squeeze1 -usbdevice tablet -vnc :1 -hda /dev/drbd0 -boot c -m 384

 

 

virt-install -d --name=squeeze --ram 512 --disk path=/dev/drbd/by-res/squeeze,bus=virtio,cache=none --virt-type=kvm --network bridge=br0,model=virtio --vnc --accelerate --location=http://ftp.debian.org/debian/dists/squeeze/main/installer-amd64/

and start using

kvm start squeeze

 

Grow disk

qemu-img resize <my_vm>.img +10G

Run vmdk in kvm

without converting?

FAQ

IDE controllers are unsupported for this QEMU binary or machine type

try specifying machine type