[one-ecosystem] Read VM ID from inside a running VM

[Tino Vazquez]

Dear Thorsten,

Yes, the contextualization mechanism is heavily used in BonFIRE, which
is used through an extension to OCCI that provides means to define
contextualization info with xml tags.

Regards,

-Tino

--
Constantino Vázquez Blanco, MSc
Project Engineer
OpenNebula - The Open-Source Solution for Data Center Virtualization
www.OpenNebula.org | @tinova79 | @OpenNebula



On Thu, Mar 1, 2012 at 10:17 AM, Papenbrock, Thorsten
<t.papenbrock at sap.com> wrote:
> Hi Rodrique and mailing list,
>
>
>
> Many thanks for your hint. The contextualisation is exactly what I was
> looking for!
>
>
>
> My next question might not be appropriate for this mailing list, but does
> anyone know if there is a similar mechanism also available in Bonfire
> (http://doc.bonfire-project.eu/) ? I heard that some of you have some
> experiences with this project as well.
>
>
>
> Best Regards,
>
> Thorsten Papenbrock
>
>
>
> From: rodrigue.chakode at gmail.com [mailto:rodrigue.chakode at gmail.com] On
> Behalf Of Rodrigue Chakode
> Sent: 28 February 2012 11:38
> To: Papenbrock, Thorsten
> Cc: ecosystem at lists.opennebula.org
> Subject: Re: [one-ecosystem] Read VM ID from inside a running VM
>
>
>
> Hi
>
> Is there a way to query this VM ID from inside the VM? Or can I configure
> OpenNebula to automatically store the VM ID in, for example, a text file
> inside a VM when it creates the VM? It would also help if the application
> could query an IP-to-VM ID mapping from OpenNebula, if such a mapping exists
> for VMs that are created with bridged DHCP network access.
>
>
>
> This goal can be easily achieved through contextualisation data
> (http://opennebula.org/documentation:archives:rel2.2:cong), notably by using
> the variables $VMID
>
>
>
> Regards,
>
>
>
>
>
> --------------------- Original message was: ---------------------
>
>
>
> Hello mailing list,
>
>
>
> I built a small application that uses the OCCI and EC2 interface to
> automatically start and delete Virtual Machines in my private OpenNebula
> cloud. Each VM runs a service that reports how busy a certain VM actually
> is. Using this service, my application creates and deletes VMs depending on
> the overall load of the cluster.
>
>
>
> Now, my problem is that I always want to delete the VM with the lowest load,
> but the application does not know the VM to which a particular service
> belongs. Therefore, I need to know the VM ID, which has been assigned
> automatically by OpenNebula, from inside a running VM. Then, each service
> could also report the VM ID to my application so that it can delete the
> right VM.
>
>
>
> Is there a way to query this VM ID from inside the VM? Or can I configure
> OpenNebula to automatically store the VM ID in, for example, a text file
> inside a VM when it creates the VM? It would also help if the application
> could query an IP-to-VM ID mapping from OpenNebula, if such a mapping exists
> for VMs that are created with bridged DHCP network access.
>
>
>
> Many thanks for your help in advance,
>
> Thorsten Papenbrock
>
>
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>