[one-users] ubuntu front end and openSUSE node

[Shi Jin]

Hi,

Thank you very much. 

First, I have enabled the commented options for Xen im and vmm and the oned.log shows both drivers are loaded.

Secondly, I think my exact problem is that the dom0 on the Xen host taking all memory. Here is what I get from onehost show:
HID      = 2
HOSTNAME = test2
IM MAD   = im_xen
VMM MAD  = vmm_xen
TM MAD   = tm_nfs
MANAGED  = 1
ATTRIBUTES

	ARCH=x86_64
	CPUSPEED=2660
	FREECPU=1599
	FREEMEMORY=6144
	HOSTNAME=test2
	MODELNAME=Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
	NETRX=0
	NETTX=0
	TOTALCPU=1600
	TOTALMEMORY=16766976
	USEDCPU=1
	USEDMEMORY=16760832
HOST SHARES
	HID          = 2
	ENDPOINT     = 
	MAX_CPU      = 1600
	MAX_MEMORY   = 16766976
	MAX_DISK     = 0
	CPU_USAGE    = 0
	MEMORY_USAGE = 0
	DISK_USAGE   = 0
	RUNNING_VMS  = 0


It looks like 
TOTALMEMORY=16766976
USEDMEMORY =16760832
shows my problem. Could you please help me on how to reduce the dom0 RAM usage? Thanks a lot.

Shi
--
Shi Jin, PhD


--- On Thu, 6/11/09, Ruben S. Montero <rubensm at dacya.ucm.es> wrote:

> From: Ruben S. Montero <rubensm at dacya.ucm.es>
> Subject: Re: [one-users] ubuntu front end and openSUSE node
> To: "Shi Jin" <jinzishuai at yahoo.com>
> Cc: users at lists.opennebula.org
> Date: Thursday, June 11, 2009, 4:10 PM
> Hi,
> 
> The configuration you are using is totally supported in
> OpenNebula
> 1.2, In fact we are using KVM+Xen in our primary production
> cluster.
> The configuration would be:
> 
> * Configure the Xen drivers (IM+VMM) in oned.conf. So both
> the Xen and
> KVM drivers are loaded (check that in the first lines of
> oned.conf).
> 
> * When you add the Xen hosts make sure that you specify
> the
> appropriate driver names
> 
> * You may need to specify some additional parameters for
> the Xen
> templates. But this depends on your set up. If this is your
> case the
> best solution to handle this is using the default values
> for each
> hypervisor (etc/vmm_kvm/vmm_kvm.conf and
> etc/vmm_xen/vmm_xen.conf). In
> this way you do not have to adjust every single
> template...
> 
> * Regarding your problem, it seems that the information the
> new Xen
> hosts are not properly obtained. Or they do not have enough
> capacity
> for the VMs. This may happen if Dom0 is taking all the
> avialable RAM
> in a ballooning configuration . Could you check for any
> monitoring
> errors in the oned.log, and with onehost list that the Xen
> nodes have
> enough free memory...?
> 
> 
> If you are doing tests, the best thing to force the
> deployment in a
> Xen machine is either with
> 
> REQUIREMENTS= HOSTNAME=<host_with_xen>
> 
> or use the onevm deploy command
> 
> 
> Cheers
> 
> Ruben
> 
> On Thu, Jun 11, 2009 at 4:27 AM, Shi Jin<jinzishuai at yahoo.com>
> wrote:
> >
> > Hi there,
> >
> > I am having a bit wierd situation. I have an existing
> cluster all running Ubuntu 9.04 with KVM as the hypervisor.
> It works fine. Now I have a new node, which is running
> openSUSE 11.1 with Xen as the hypersivor. I think OpenNebula
> supports both and the drivers can be loaded together.
> However, I am unable to get VMs running on the new OpenSUSE
> node.  The node is added without any problem. If I remove
> all other nodes, the newly created VM will always be in the
> "Pending" state.  I am wondering what could be wrong in my
> setup and how I can debug this. Right now, other than
> finding the pending state, the /var/log/one log files does
> not give me much information.
> >
> > Also, in the template file, do I need to specify
> whether I want the hypervisor to be KVM or Xen? How do I do
> that if I want to?
> >
> > Thank you very much.
> > --
> > Shi Jin, PhD
> >
> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at lists.opennebula.org
> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
> >
> 
> 
> 
> -- 
> +---------------------------------------------------------------+
>  Dr. Ruben Santiago Montero
>  Associate Professor
>  Distributed System Architecture Group (http://dsa-research.org)
> 
>  URL:    http://dsa-research.org/doku.php?id=people:ruben
>  Weblog: http://blog.dsa-research.org/?author=7
> 
>  GridWay, http://www.gridway.org
>  OpenNebula, http://www.opennebula.org
> +---------------------------------------------------------------+
>