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Migrating from nova-network to quantum

asked 2013-05-24 05:36:21 -0500

Maciej Galkiewicz gravatar image

I am currently using grizzly with nova-network (flat dhcp network without vlans). I have tried to migrate to quantum without breaking my instances but it is not so trivial. Could you please point out some howtos/manuals or at least let me know whether it is actually possible?

I can replace old instances with new ones but during the migration all of them must have network connectivity. I would like to avoid migrating data from nova to quantum database. Replacing instances is probably easier for me.

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answered 2013-05-29 12:08:25 -0500

armando-migliaccio gravatar image

As far as I can tell, I am not aware of any migration path that preserves network connectivity for your VM's; if such path does exists, this may only work in specific settings (i.e. with specific hypervisors, storage, etc).

A more viable approach is snapshotting your VM's into Glance prior to the migration from nova-network to Quantum and redeploying them after the upgrade. This causes some downtime, but this can be minimized if you run the two environments (nova-network based and quantum-based) along-side each other.

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Asked: 2013-05-24 05:36:21 -0500

Seen: 375 times

Last updated: May 29 '13