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Bug 1077200 (rhelosp_instance_groups)

Summary: [Tracking] Iterate on Instance Groups Implementation
Product: Red Hat OpenStack Reporter: Stephen Gordon <sgordon>
Component: openstack-novaAssignee: RHOS Maint <rhos-maint>
Status: CLOSED UPSTREAM QA Contact: Ami Jeain <ajeain>
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: ndipanov, yeylon
Target Milestone: ---Keywords: Tracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2015-06-04 06:32:16 UTC Type: Bug
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1093244    
Bug Blocks:    

Description Stephen Gordon 2014-03-17 12:56:47 UTC 
Description of problem:

Ability to ensure separation/spread of critical virtual machines onto different hypervisors

* Initial instance groups implementation provides affinity and anti-affinity
* NFV desire is to also have a spread capability (need a better term), ability to ensure critical/redundant virtual machines are spread across cluster as much as possible but not necessarily full affinity.
* Also an expressed interest in grouping instances for interconnected VNFs based on physical host proximity or proximity to storage. Potentially this is solved using existing functionality such as aggregates, perhaps best expressed as "this instance group needs to end up within the same aggregate?".