Hi Chaoyi, Thanks for sharing these information.
Sometime back I have stared a project called “Alliance” which trying to address the same concerns (see the link below). Alliance service is designed to provide "Inter-Cloud Resource Federation" which will enable resource sharing across cloud in distributed multi-site OpenStack clouds deployments. This service will run on top of OpenStack Cloud and fabricate different cloud (or data centers) instances in distributed cloud setup. This service will work closely with OpenStack components (Keystone, Nova, Cinder....) to manage and provision different resources (token, VM, images, network .....). Alliance service will provide abstraction to hide interoperability and integration complexities from underpinning cloud instance and enable following business use cases. - Multi Region Capability - Virtual Private Cloud - Cloud Bursting This service will provide true plug & play model for region expansion, VPC like use case, conceptual design can be found at https://wiki.openstack.org/wiki/Inter_Cloud_Resource_Federation. We are working on POC using this concept which is in WIP. I will be happy to coordinate with you on this and try to come up with common solution, seems we both are trying to address same issues. Thoughts? Thanks, Arvind From: joehuang [mailto:joehu...@huawei.com] Sent: Wednesday, October 01, 2014 6:56 AM To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [all] [tc] Multi-clouds integration by OpenStack cascading Hello, Alex, Thank you very much for your mail about remote cluster hypervisor. One of the inspiration for OpenStack cascading is from the remote clustered hypervisor like vCenter. The difference between the remote clustered hypervisor and OpenStack cascading is that not only Nova involved in the cascading, but also Cinder, Neutron, Ceilometer, and even Glance(optional). Please refer to https://wiki.openstack.org/wiki/OpenStack_cascading_solution#Inspiration, https://wiki.openstack.org/wiki/OpenStack_cascading_solution#Architecture for more detail information. Best Regards Chaoyi Huang ( joehuang ) ________________________________ From: Alex Glikson [glik...@il.ibm.com] Sent: 01 October 2014 12:51 To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [all] [tc] Multi-clouds integration by OpenStack cascading This sounds related to the discussion on the 'Nova clustered hypervisor driver' which started at Juno design summit . Talking to another OpenStack should be similar to talking to vCenter. The idea was that the Cells support could be refactored around this notion as well. Not sure whether there have been any active progress with this in Juno, though. Regards, Alex  http://junodesignsummit.sched.org/event/a0d38e1278182eb09f06e22457d94c0c#<http://junodesignsummit.sched.org/event/a0d38e1278182eb09f06e22457d94c0c>  https://etherpad.openstack.org/p/juno-nova-clustered-hypervisor-support From: joehuang <joehu...@huawei.com<mailto:joehu...@huawei.com>> To: "OpenStack Development Mailing List (not for usage questions)" <firstname.lastname@example.org<mailto:email@example.com>> Date: 30/09/2014 04:08 PM Subject: [openstack-dev] [all] [tc] Multi-clouds integration by OpenStack cascading ________________________________ Hello, Dear TC and all, Large cloud operators prefer to deploy multiple OpenStack instances(as different zones), rather than a single monolithic OpenStack instance because of these reasons: 1) Multiple data centers distributed geographically; 2) Multi-vendor business policy; 3) Server nodes scale up modularized from 00's up to million; 4) Fault and maintenance isolation between zones (only REST interface); At the same time, they also want to integrate these OpenStack instances into one cloud. Instead of proprietary orchestration layer, they want to use standard OpenStack framework for Northbound API compatibility with HEAT/Horizon or other 3rd ecosystem apps. We call this pattern as "OpenStack Cascading", with proposal described by . PoC live demo video can be found. Nova, Cinder, Neutron, Ceilometer and Glance (optional) are involved in the OpenStack cascading. Kindly ask for cross program design summit session to discuss OpenStack cascading and the contribution to Kilo. Kindly invite those who are interested in the OpenStack cascading to work together and contribute it to OpenStack. (I applied for “other projects” track , but it would be better to have a discussion as a formal cross program session, because many core programs are involved )  wiki: https://wiki.openstack.org/wiki/OpenStack_cascading_solution  PoC source code: https://github.com/stackforge/tricircle  Live demo video at YouTube: https://www.youtube.com/watch?v=OSU6PYRz5qY  Live demo video at Youku (low quality, for those who can't access YouTube)：http://v.youku.com/v_show/id_XNzkzNDQ3MDg4.html  http://firstname.lastname@example.org/msg36395.html Best Regards Chaoyi Huang ( Joe Huang ) _______________________________________________ OpenStack-dev mailing list OpenStackemail@example.com<mailto:OpenStackfirstname.lastname@example.org> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
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