Bug 2184882

Summary:	[RFE] Multi-region support in RHOSP
Product:	Red Hat OpenStack	Reporter:	Keigo Noha <knoha>
Component:	distribution	Assignee:	OSP Team <rhos-maint>
Status:	NEW ---	QA Contact:	Lon Hohberger <lhh>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	16.1 (Train)	CC:	jcapitao, jjoyce, jschluet, mburns, mgarciac, shrjoshi
Target Milestone:	---	Keywords:	FutureFeature, RFE
Target Release:	---	Flags:	jjoyce: needinfo? (mbracho)
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2222869

Description Keigo Noha 2023-04-06 06:09:19 UTC

Description of problem:
Director and future RHOSP can create individual deployments.
There are some customers who want to create multi-region deployments.
Deploying each deployment can be accomplished by the current deployment methods.
However, there are no information about how to coordinate between the regions.
For example, how to sync users in Keystone and provide the unified operation experience.

I think the following service can be a global services.
- Keystone
- Horizon
- Designate

To support a multi-region deployments, we may need to consider
1. What architecture can be selected to accomplish multi-region deployment?
2. How to create the architecture with the installer.
3. How to update/upgrade the multi-region deployments.