[one-users] Virtual Machine contextualization variables

[Olivier Sallou]

On 09/12/2013 05:36 PM, nelsonpeixoto at fiocruz.br wrote:
> Dear friends,
>
> It is my first post in here. I have been trying out OpenNebula 3.2 and I
> have a doubt on using context variables.
>
> I have two hosts for the VMs and i want to be able to capture, via context
> variable, for each VM I instantiate, which host is it on (IP or FQDN).
>
> I managed to find this page
> (http://opennebula.org/documentation:archives:rel3.2:template) with a set
> of instructions on how to use context variables and a link to some of the
> possible values, but I could not find any hint on how to catch any
> information on which host is the VM running on.
>
> I want to be able to capture this information and later on use this data
> on the VM boot, in order to add some specific network configurations.
>
> So, is there a place with a broader context variable reference guide or is
> there a way to catch that info?
Hi,
you can't set (yet)  any dynamic context variable. All you can do is to
set some "static" variables in the template of your VM.
Via Hooks, you may be able to catch the information (getting all context
data of the VM), and register it in a db/file/... then your VM, once
booted, could try to access this data.
However, your VM network should not depend on the host running the VM.

Regards

Olivier
>
> Thanks in advance,
> Nelson Peixoto.
>
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>

-- 
Olivier Sallou
IRISA / University of Rennes 1
Campus de Beaulieu, 35000 RENNES - FRANCE
Tel: 02.99.84.71.95

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