[one-users] OpenNebula on a VM

[Michael Kutzner]

Hi Steve,

Am 08.06.2012 um 16:32 schrieb Steven C Timm:

> 
> For those of you who are running the oned on a VM, which image repository type are you using?  Are you having any problems with performance loading VM images into or out of the image repository?

we are currently running the ssh datastore with the images stored on an nfs server (non shared system datastore).
The nfs share is mounted on any node and we are not deploying or copying back
the images via scp - this needed small modifications in the ssh tm but is performing
better when copying huge images and e.g. deploying several machines to different
nodes (the nfs servers are connected via 10Gig).

Modifications just done to "ln" and "mvds" scripts of the ssh tm driver.

ln:
    ssh_exec_and_log "$DST_HOST" "cp -r $SRC_PATH $DST_PATH" "Error copying $SRC_PATH to $DST_PATH on host $DST_HOST"
    instead of
    exec_and_log "$SCP -r $SRC $DST" "Error copying $SRC to $DST"

mvds
  ssh_exec_and_log "$SRC_HOST" "cp -r $SRC_PATH $DST_PATH" "Error copying $SRC_PATH to $DST_PATH on host $SRC_HOST"
  instead of
  exec_and_log "$SCP -r $SRC $DST" "Error copying $SRC to $DST"

The performance for frontend-local processes is fine - linespeed of the gbit host interface.

It is a small vm (mysql is running on an external cluster), just 2GB of RAM, non public
sunstone.

Best, Michael


> 
> Steve
> 
> -----Original Message-----
> From: users-bounces at lists.opennebula.org [mailto:users-bounces at lists.opennebula.org] On Behalf Of Jhon Masschelein
> Sent: Friday, June 08, 2012 1:28 AM
> To: computedive at gmail.com
> Cc: users at lists.opennebula.org
> Subject: Re: [one-users] OpenNebula on a VM
> 
> Hi,
> 
> We run the oned and mm_sched daemons in a VM and have sunstone running in its own VM. This way, even if the sunstone get overloaded (it is a public web site), the oned won't suffer.
> 
> 
> Our opennebula VM has 4 cores and 32 GB Ram, but in our experience, the
> load of the  VM is very low and if we ever need the resurces for 
> something else, we'll probably shrink this VM to half its size.
> 
> The sunstone VM is just a website, so you have to scale it according to
> the use. For now it's a one core, 512MB VM and it runs quite smoothly.
> 
> Wkr,
> 
> Jhon
> 
> On 06/07/2012 05:50 PM, computedive at gmail.com wrote:
>> Hi,
>> 
>> Are there any restrictions on hosting OpenNebula Front-end on a
>> virtual machine if enough compute resources were guaranteed for that
>> VM?
>> 
>> Is there a recommended systems requirements for OpenNebula
>> installation (CPU/RAM) .. I know it all depends on the environment
>> size, num of VMs/hypervisors :) .. but a general guide line would be
>> helpful..
>> 
>> thanks.
>> 
>> Sent from my BlackBerry(r) smartphone
>> _______________________________________________ Users mailing list
>> Users at lists.opennebula.org
>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>> 
> 
> -- 
> Jhon Masschelein
> Senior Systeemprogrammeur
> SARA - HPCV
> 
> Science Park 140
> 1098 XG Amsterdam
> T +31 (0)20 592 8099
> F +31 (0)20 668 3167
> M +31 (0)6 4748 9328
> E jhon.masschelein at sara.nl
> http://www.sara.nl
> 
> 
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