[Openstack] Migrate instances/tenants between clouds

Joshua Harlow harlowja at yahoo-inc.com
Thu Oct 24 19:48:47 UTC 2013

Whatever happened to doing in-place upgrades?

Has that been problematic for u, are people just not doing it? If they are
avoiding it, why?

Shouldn't just going from folsom->havana work, if not, why not; it worries
me that this isn't priority #0 if it doesn't work.

On 10/24/13 10:51 AM, "Tim Bell" <Tim.Bell at cern.ch> wrote:

>Have you tried
>- snapshot
>- glance download of the snapshot
>- glance upload of the snapshot to new instance
>- boot from snapshot
>The process we use at CERN is documented at
>This could be a good technique to document in the standard CERN openstack
>user guide.
>BTW, this does increase the storage in your glance server since you'll
>loose any commonality between multiple images. So, make sure you've lots
>of space on Glance.
>> -----Original Message-----
>> From: Alexander Stellwag [mailto:openstack at stellwag.net]
>> Sent: 24 October 2013 16:53
>> To: openstack at lists.openstack.org
>> Subject: [Openstack] Migrate instances/tenants between clouds
>> Hi stackers,
>> we're looking for a tool / script / blueprint to migrate instances or
>>even complete tenants between multiple installations of OpenStack
>> (possibly running different versions).
>> I searched around the net but didn't find anything appropriate. Is any
>>of you aware of such a tool?
>> The current use-case is a migration from a folsom/nova-network based
>>installation into our new havana/neutron based cloud. It is not
>> necessary to migrate instances and volumes online but it should work at
>>least semi-automatically to make it usable in large deployments.
>> Any hints would be greatly appreciated.
>> Cheers,
>> Alex
>> --
>> Alexander Stellwag
>> Deutsche Telekom AG Products & Innovation Infrastructure Design
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