Download the mikrotik CHR raw image and unzip it
wget 'https://download.mikrotik.com/routeros/6.46.1/chr-6.46.1.img.zip' unzip chr-6.46.1.img.zip
Create the LVM
Craete a new LVM and copy the data from the image
lvcreate -L 1G -n chr vg0 dd if=chr-6.46.1.img of=/dev/vg0/chr.lcx.at-disk
Create XEN configuration
Generate new UUID
If you intend to buy a license for this CHR you need to make sure that yhe software-id does not change with every reboot, unforutnately the default setting would results in a new software id after every reboot, this would break the CHR license and you are stuck with 1Mbit. Trying to purchase a license will give you this error:
status: ERROR: This System ID is not valid for license
To create a unique uuid, run
uuidgen and use this in the xen configuration below, thanks to the Mikrotik forum for this hint.
$ uuidgen 27F7EDA4-78DD-4706-89D8-0601964BD6BC
Craete a file
/etc/xen/chr.cfg with the xen config
builder = 'hvm' name = 'chr' memory = 512 maxmem = 512 # this is needed so that the system id does not change uuid = "27F7EDA4-78DD-4706-89D8-0601964BD6BC" vcpus = 1 pae = 1 acpi = 1 viridian = 0 apic = 1 device_model = '/bin/true' boot = 'cd' sdl = 0 usb = 1 usbdevice = 'tablet' vnc = 1 vnclisten = '0.0.0.0' serial = 'pty' vif = [ 'type=ioemu, bridge=xenbr0, ip=127.0.0.1, mac=some:mac:address:here'] disk = [ 'phy:/dev/vg0/chr,hda,w'] on_poweroff = 'preserve' on_reboot = 'restart' on_crash = 'restart'
replace the ip and mac address, you can use this Random MAC Address Generator to generate a new random MAC Address for the vm.
now you can start the mikrotik CHR and connect to it via VNC
xl create /etc/xen/chr.cfg
XEN script is based on this post on the mikrotik forum from maznu