Difference between revisions of "KVM"
From Linuxintro
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| − | = SUSE 11.2 = | + | KVM is the Linux kernel's native virtualization. |
| + | |||
| + | = Install it = | ||
| + | == SUSE 11.2 == | ||
* Make sure you have a modern computer and "virtualization technology" switched on in your BIOS | * Make sure you have a modern computer and "virtualization technology" switched on in your BIOS | ||
* [[open a console]] and enter | * [[open a console]] and enter | ||
| Line 20: | Line 23: | ||
Now it works - you can create a virtual machine without networking. | Now it works - you can create a virtual machine without networking. | ||
| − | = Network = | + | === Network === |
If you want networking in your virtual machines, you will have to set up bridged networking on your host computer first. So: | If you want networking in your virtual machines, you will have to set up bridged networking on your host computer first. So: | ||
* start networking configuration | * start networking configuration | ||
| Line 32: | Line 35: | ||
* create a new virtual machine with networking | * create a new virtual machine with networking | ||
| − | == more information == | + | ==== more information ==== |
brctl show | brctl show | ||
brctl addbr br0 | brctl addbr br0 | ||
| Line 38: | Line 41: | ||
route del -net 192.168.0.0 netmask 255.255.255.0 eth0 | route del -net 192.168.0.0 netmask 255.255.255.0 eth0 | ||
Reference: http://kbase.redhat.com/faq/docs/DOC-19071 | Reference: http://kbase.redhat.com/faq/docs/DOC-19071 | ||
| + | |||
| + | = backup = | ||
| + | # virsh list --all | ||
| + | # cp -r /var/lib/xen/images/''virtual_machine'' /''target'' | ||
Revision as of 09:05, 5 September 2010
KVM is the Linux kernel's native virtualization.
Install it
SUSE 11.2
- Make sure you have a modern computer and "virtualization technology" switched on in your BIOS
- open a console and enter
# yast -i kvm virt-manager # /etc/init.d/libvirtd start # chkconfig libvirtd on # virt-manager
Now you try to create a new virtual machine. When you use Paravirtualization, you get the error message "The hypervisor is not running.". When you try to use "Full virtualization", you get an error
The operating system does not support full virtualization The CPUs support full virtualization, but it is disabled in the BIOS
To resolve this,
- create a new connection, type "QEMU/KVM"
- reboot your computer
- start virt-manager
create a new virtual machine. You get an error
internal error No <source> 'bridge' attribute specified with <interface type='bridge'/>
To resolve this
- you disable networking
Now it works - you can create a virtual machine without networking.
Network
If you want networking in your virtual machines, you will have to set up bridged networking on your host computer first. So:
- start networking configuration
yast2 lan
- delete the configuration of your network card. We call it eth0 in this example.
- create an additional network device, a bridge, using yast2. Assign it your default IP address. Configure it to bridge network traffic for eth0.
- restart networking
/etc/init.d/network restart
- restart the hypervisor
/etc/init.d/libvirtd restart
- create a new virtual machine with networking
more information
brctl show brctl addbr br0 brctl addif br0 eth0 route del -net 192.168.0.0 netmask 255.255.255.0 eth0
Reference: http://kbase.redhat.com/faq/docs/DOC-19071
backup
# virsh list --all # cp -r /var/lib/xen/images/virtual_machine /target
