[one-users] are variables inside the vm template possible?

[Michael Fairchild]

Hello,
   I think modifying the imm_kvm driver to get the information will  
probably work best.  Using the VMID as default could get very large,  
and potentially conflict with existing open connections.
   Thanks,
~Michael
On Feb 5, 2010, at 2:47 AM, Ruben S. Montero wrote:

> Hi,
>
> As Javier said this is done in the OpenNebula core. We have filled one
> ticket [1] to address this. However, looking at the attributes we do
> not need to use this cross parsing for all the variables (e.g. OS,
> DISK). Right now we have this for CONTEXT and for the REQUIREMENTS in
> a development branch [2]. (For example you can do something like
> REQUIREMENTS = $NIC[MAC] = MACS, if you have a custom probe that
> generates a MACS attribute for the hosts you can do short of a MAC
> pinning, so only VMs with a given MAC runs in a given host)
>
> My proposal: default generation values for port and listen in
> GRAPHICS. So if you do not put a port, OpenNebula will automatically
> assign 5900+$VMID, and if you do not put a listen OpenNebula will
> automatically HOSTNAME of the host where the VM is placed.
>
> What do you think?
>
>
> Cheers
>
> Ruben
>
> PS: Added this to the ticket [1] if you want to continue the  
> discussion there
>
> REFS:
> [1] http://dev.opennebula.org/issues/189
> [2] http://dev.opennebula.org/projects/opennebula/repository/show/branches/DEVELOPMENT/Context_Requirements
>
> 2010/2/5 Javier Fontan <jfontan at gmail.com>:
> > Hello,
> >
> > Unfortunately it is not python script but it is parsed by OpenNebula
> > itself. Only context part substitutes those parameters. The solution
> > can come from letting kvm select the vnc port and modifying vmm  
> driver
> > to get vnc host/port in poll call (VM monitoring). I don't think  
> that
> > is too hard to do. Maybe we can add a ticket as a feature request.
> >
> > Bye
> >
> >
> > 2010/2/5 Nikola Milutinović <n.milutinovic at levi9.com>:
> >> On 2/5/2010 9:04 AM, Michael Fairchild wrote:
> >>
> >> Hello,
> >>   I am wondering if there is any way to use variables inside the vm
> >> definition, such as
> >>
> >> GRAPHICS = [
> >>     type = "vnc",
> >>     listen = "0.0.0.0",
> >>     port = "590$VMID"
> >> ]
> >>
> >> It should be. We are definitely using those for contextualization.
> >>
> >> CONTEXT = [
> >>    ...
> >>    id = $VMID,
> >> ]
> >>
> >> That template is basically a Python script, if I understand  
> correctly, so
> >> you can even place a program inside.
> >>
> >> Nix.
> >> --
> >> Met vriendelijke groet / Kind regards,
> >> Nikola Milutinovic
> >> Sr Java Developer
> >> Levi9 Global Sourcing
> >> ________________________________
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> >
> >
> >
> > --
> > Javier Fontan, Grid & Virtualization Technology Engineer/Researcher
> > DSA Research Group: http://dsa-research.org
> > Globus GridWay Metascheduler: http://www.GridWay.org
> > OpenNebula Virtual Infrastructure Engine: http://www.OpenNebula.org
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> >
>
>
>
> --
> Dr. Ruben Santiago Montero
> Associate Professor, Complutense University of Madrid
>
> URL:    http://dsa-research.org/doku.php?id=people:ruben
> Weblog: http://blog.dsa-research.org/?author=7
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