[Openstack-operators] Nova cells v2 and operational impacts

Robert Collins robertc at robertcollins.net
Tue Jul 21 14:48:42 UTC 2015


On 22 July 2015 at 02:45, Michael Still <mikal at stillhq.com> wrote:
> Heya,
>
...
> So what's the actual question? We're introducing an additional mysql
> database that every nova deployment will need to possess in Liberty.
> We talked through having this data be in the existing database, but
> that wasn't a plan that made us comfortable for various reasons. This
> means that operators would need to do two db_syncs instead of one
> during upgrades. We worry that this will be annoying to single cell
> deployments.
>
> We therefore propose the following:
>
>  - all operators when they hit Liberty will need to add a new
> connection string to their nova.conf which configures this new mysql
> database, there will be a release note to remind you to do this.
>  - we will add a flag which indicates if a db_sync should imply a sync
> of the cells database as well. The default for this flag will be true.
>
...

Will sites need to do some syncing or something to populate the new DB
[data, not schema], or will the v2 code automatically do this itself?

-Rob

-- 
Robert Collins <rbtcollins at hp.com>
Distinguished Technologist
HP Converged Cloud



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