[tc][all][SDK][API] Multi-region/edge OpenStack deployment

Thierry Carrez thierry at openstack.org
Tue Apr 14 09:56:39 UTC 2020

Marie Delavergne wrote:
> Following the previous discussions regarding approaches to make several 
> instances of OpenStack collaborative[1], we finally decided to make a 
> research report on the approach we initially proposed during the edge 
> hackathon in Berlin (OSF summit 2018).
> The document is a short article (~10 pages long)[2] that gives a rather 
> complete overview of the approach. If you are interested to see how 
> mutliple instances of distinct OpenStack can give the illusion of a 
> single system you might be interested to give it a look.
> A brief excerpt:
> “We propose a  novel approach that delivers any collaboration between 
> services of distinct OpenStack once and for all. Our approach eliminates 
> development efforts related to the brokering aspect by leveraging 
> dynamic composition and a Domain Specific Language (DSL).
> Using these two mechanisms, Admins/DevOps can specify, on a per-request 
> basis, which services from which OpenStacks are required for the 
> collaboration. This information is then interpreted to dynamical 
> recompose services between the different OpenStacks, enabling the 
> execution of single-, cross- or multiple-site requests without code effort.”
> The main idea is, considering several OpenStacks running, to use a DSL 
> to specify which instance of the service (i.e. on which Openstack) the 
> user wants its request to be executed.
> For instance, to provision a VM on a Nova in Paris using an image from a 
> Glance in New York. You may contact the API either in NewYork or in 
> Paris and perform the following request:
> "openstack server create --image debian --scope { compute: Paris, image: 
> New York }"
> Along with the report comes a proof of concept available on GitLab[3].
> Feel free to get back to us.
> Cheers
> [1] 
> http://lists.openstack.org/pipermail/openstack-discuss/2020-March/013562.html
> [2] https://hal.inria.fr/hal-02527366/
> [3] https://gitlab.inria.fr/discovery/openstackoid

Thanks Marie!

This is a very interesting approach, and I'll make sure to read this 
article soon. For those interested in learning about the openstackoid 
approach but can't read French, I highly recommend the following 


Thierry Carrez (ttx)

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