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#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 

This sounds related to the discussion on the 'Nova clustered hypervisor driver' 
which started at Juno design summit [1]. 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.


[1] http://junodesignsummit.sched.org/event/a0d38e1278182eb09f06e22457d94c0c#
[2] https://etherpad.openstack.org/p/juno-nova-clustered-hypervisor-support

From:        joehuang <joehu...@huawei.com>
To:        "OpenStack Development Mailing List (not for usage questions)" 
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 
[1][2]. PoC live demo video can be found[3][4].

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 [5], but it would be better to have a 
discussion as a formal cross program session, because many core programs are 
involved )

[1] wiki: https://wiki.openstack.org/wiki/OpenStack_cascading_solution
[2] PoC source code: https://github.com/stackforge/tricircle
[3] Live demo video at YouTube: https://www.youtube.com/watch?v=OSU6PYRz5qY
[4] Live demo video at Youku (low quality, for those who can't access 
[5] http://www.mail-archive.com/openstack-dev@lists.openstack.org/msg36395.html

Best Regards
Chaoyi Huang ( Joe Huang )
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