This is my template from xen, dom0=sci. linux 5.7, opennebula 2.0
I have a cloud with both KVM and Xen hosts in it.
I would strongly urge you to not use the kernel/initrd approach
and instead use the pygrub option as I have below, with the kernel
stored inside the domU. It is a lot easier to maintain
in the long run. also you still need the kernel installed inside
the domU anyway even if you are using an external vmlinuz/initrd.img
to boot.
If you were using an external vmlinuz/initrd combo then yes the
field would change every time you updated a kernel, unless
you made a symlink or something.
Steve Timm
---------------------------------
[timm@fcl002 ~/OpenNebula]$ more cloudgums2_xen.one
NAME = cloudgums2.fnal.gov
CPU = 2
VCPU = 2
MEMORY = 3072
#OS = [
# kernel = /vmlinuz,
# initrd = /initrd.img,
# root = sda1,
# kernel_cmd = "ro xencons=tty console=tty1"]
OS = [ bootloader = "/usr/bin/pygrub" ]
DISK = [ image = "cloudgums2-persist-xen.img" ]
DISK = [
type = swap,
size = 5120,
target = sdb ]
DISK = [
type = fs,
size = 4096,
format = ext3,
save = yes,
target = sdc,
bus = scsi ]
#NIC = [ NETWORK = "FermiCloud" ]
NIC = [ BRIDGE = "xenbr0", MAC = "00:16:3E:02:03:01" ]
FEATURES=[ acpi="no" ]
GRAPHICS = [
type = "vnc",
listen = "127.0.0.1",
port = "5917" ]
CONTEXT = [
hostname = "$NAME",
ip_public = "131.225.154.209",
netmask = "255.255.254.0",
gateway = "131.225.154.1",
ns = "131.225.8.120",
files = "/cloud/images/OpenNebula/templates/init.sh
/home/timm/OpenNebu
la/k5login /home/timm/OpenNebula/gums/link_certs.sh",
target = "hdc",
root_pubkey = "id_dsa.pub",
username = "opennebula",
user_pubkey = "id_dsa.pub"
]
REQUIREMENTS = "HYPERVISOR=\"xen\""
[timm@fcl002 ~/OpenNebula]$
------------------------
On Wed, 7 Mar 2012, Darshan Upadhyay wrote:
Hello friends,
i am using opennebula 3.0 on centos 5.5....i have successfully connected
front-end and host.....i am using xen hypervisor.....please provide me one
example of vm template related to xen....and guide me how i can specify the
attribute like Kernel = ?, initrd = ? and root = ?......also tell me that,
this field is continuouly changed with different os of vm or remains same???
and what is the use of database in cloud??
Thanking you in anticipation....
------------------------------------------------------------------
Steven C. Timm, Ph.D (630) 840-8525
t...@fnal.gov http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Group Leader.
Lead of FermiCloud project.
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