How To Install Xen Hypervisor On Ubuntu 20.4
Here is the basic architecture:
Xen – this is the software that boots up when you boot the server.
domain-0 – this controls Xen and all the virtual machines added to the machine.
domain-u – these are the virtual machines.
paravirtual drivers – performance with Windows will be really slow unless you instill the opensource network,
storage, bus, and other paravirtual drivers.
You will need the ISO image of the operating system you want to use.
Install Ubuntu on an empty machine and use the LVM (logical volume manager) option when you do that. Leave space for a logical volume for VMs when you are asked to create partitions. Or use another drive for that when you set up the VMs later.
sudo apt-get install xen-hypervisor-amd64
Now you have a Xen hypervisor. Run this to confirm:
sudo xl list
You will see domain-0:
Name ID Mem VCPUs State Time(s)
Domain-0 0 10789 1 r—– 2643.0
Configure bridged networking. Do not use OpenvSwitch (You can but these instructions will not work for that.):cat /etc/network/interfaces auto lo eth0iface lo inet loopbackiface eth0 inet manualauto xenbr
iface xenbr inet dhcp
Assign memory to the domain-0 machine so that it does not run slow when you add VMs by adding this line:
sudo vi /etc/default/grub.d/xen.cfg
That gives domain-0 10GB.