[openstack-dev] [keystone] Custom ProjectID upon creation

Adrian Turjak adriant at catalyst.net.nz
Mon Dec 5 23:04:57 UTC 2016

Just to clarify, the reason you want custom project IDs is so that when
you create a project in one region, you can create it again with the
same ID in another? Isn't that just manual replication though?

What happens when there are projects in only one region? Or if that
isn't meant to happen, how would you make sure that doesn't happen?

On 06/12/16 07:20, Andrey Grebennikov wrote:
> Hi keystoners,
> I'd like to open the discussion about the little feature which I'm
> trying to push forward for a while but I need some
> feedbacks/opinions/concerns regarding this.
> Here is the review I'm talking
> about https://review.openstack.org/#/c/403866/
> <https://review.openstack.org/#/c/403866/>
> What I'm trying to cover is multi-region deployment, which includes
> geo-distributed cloud with independent Keystone in every region.
> There is a number of use cases for the change:
> 1. Allow users to re-use their tokens in all regions across the
> distributed cloud. With global authentication (LDAP backed) and same
> roles names this is only one missing piece which prevents the user to
> switch between regions even withing single Horizon session.
> 2. Automated tools responsible for statistics collection may access
> all regions using one token (real customer's usecase)
> 3. Glance replication may happen because the images' parameter "owner"
> (which is a project) should be consistent across the regions.
> What I hear all time - "you have to replicate your database" which
> from the devops/deployment/operations perspective is totally wrong
> approach.
> If it is possible to avoid Galera replication over geographically
> distributed regions - then API calls should be used. Moreover, in case
> of 2 DCs there will be an issue to decide which region has to take
> over when they are isolated from each other.
> There is a long conversation in the comments of the review, mainly
> with concerns from cores (purely developer's opinions).
> Please help me to bring it to life ;)
> PS I'm so sorry, forgot to create a topic in the original message
> -- 
> Andrey Grebennikov
> Principal Deployment Engineer
> Mirantis Inc, Austin TX
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