[one-users] SSH issue while Migrating

[Ruben S. Montero]

Hi

For live migrations you will need a shared file-system like NFS. The
need of ssh in this case depends on the hypervisor. If you are using
KVM, you can easily change the method to interface with the
hypervisors e.g you may change qemu+ssh to qemu+tcp (line 123 in
one_vmm_kvm.rb). With Xen there should not be such a limitation.

Cold migration requires SSH, though. In this case NFS (or other shared
FS) will be used
by OpenNebula if it is configured to do so, this could speed up the process.

Finally, I think that it is a great idea to have a script that helps
to distribute the SSH keys and sets the appropriate trust in the
cluster nodes...

Cheers

Ruben

On Tue, Jun 9, 2009 at 12:59 PM,  <prema.ramakrishnappa at wipro.com> wrote:
> Hi
> I am able to migrate a running VM from  hostmachine1 to hostmachine2 .
> But I understand that password less SSH setup is required as a prerequisite
> between  hostmachine1 and hostmachine2.
> so i would like to understand the following:
>
> is there any other alterative way to use migrate without SSH or
> can we achieve migrate using NFS. if yes may I know how can we achieve that.
>
> (1). How to programmatically connect to hostmachine1 and hostmachine2 with
> password less ssh
>
> (2). Is there any other alterative way to use migrate without SSH
>
> (3). can we achieve migrate using NFS. if yes may I know how can we achieve
> that.
>
> Regards,
>
> Prema
>
>
>
>
>
>
>
> Please do not print this email unless it is absolutely necessary.
>
> The information contained in this electronic message and any attachments to
> this message are intended for the exclusive use of the addressee(s) and may
> contain proprietary, confidential or privileged information. If you are not
> the intended recipient, you should not disseminate, distribute or copy this
> e-mail. Please notify the sender immediately and destroy all copies of this
> message and any attachments.
>
> WARNING: Computer viruses can be transmitted via email. The recipient should
> check this email and any attachments for the presence of viruses. The
> company accepts no liability for any damage caused by any virus transmitted
> by this email.
>
> www.wipro.com
>
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
>



-- 
+---------------------------------------------------------------+
 Dr. Ruben Santiago Montero
 Associate Professor
 Distributed System Architecture Group (http://dsa-research.org)

 URL:    http://dsa-research.org/doku.php?id=people:ruben
 Weblog: http://blog.dsa-research.org/?author=7

 GridWay, http://www.gridway.org
 OpenNebula, http://www.opennebula.org
+---------------------------------------------------------------+