[one-users] Sharing images between clusters

[Andreas Calvo]

Carlos,
Thanks for your answer.
>From what I understand, the Image Datastore must be accesible from the hosts selected (all or just a cluster). However, the system datastore must be shared between the cluster (store transient data).

On my scenario, clusters do not share the same Image Datastore nor can access the same resources.
System datastore was planned to be local (on the DMZ node's filesystem), and the image to be transferred over the network.

So, when moving an image from one cluster to the other (or starting a VM in the DMZ cluster), can Opennebula's manager copy over the network an image that's stored using iSCSI (image datastore) to the DMZ's node filesystem (system datastore), giving the premise that the DMZ node cannot access iSCSI?

Thanks

---
Andreas Calvo Gómez
Systems Engineer

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----- Original Message -----
From: "Carlos Martín Sánchez" <cmartin at opennebula.org>
To: "Andreas Calvo Gómez" <andreas.calvo at scytl.com>
Cc: users at lists.opennebula.org
Sent: Monday, June 9, 2014 6:52:23 PM
Subject: Re: [one-users] Sharing images between clusters

Hi,

On Thu, Jun 5, 2014 at 11:31 AM, Andreas Calvo Gómez <
andreas.calvo at scytl.com> wrote:

> Hi,
> I'm trying to set up a DMZ zone and I'm struggling with datastores and TMs.
> The main goal is to provide an internal zone to work with VMs, and the
> publish the final image to the DMZ zone.
> Then, while starting the VM, select the cluster to deploy the image (using
> maybe SSH TM).
>
> Would it be possible to share images between clusters?
>
> Thanks!
>
> --
> Andreas Calvo Gómez
> Systems Engineer
>
>
The Image Datastore cannot be in more than one cluster. You can however
move it to the none (-1) cluster, what makes it accessible to all hosts.

System Datastores can be selected for each deployment, but depending on the
Image Datastore the image may be used directly from the Image DS, not the
system one. There's more info about this in the storage section of the docs
[1], but feel free to come back with any questions.

Regards

[1] http://docs.opennebula.org/4.6/administration/storage/sm.html
--
Carlos Martín, MSc
Project Engineer
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org <http://www.opennebula.org/> | cmartin at opennebula.org |
@OpenNebula <http://twitter.com/opennebula> <cmartin at opennebula.org>