Hi all, Today I am searching for a solution to distribute OpenStack over several geographies/availabilitiy zones and we found one from Huawei in . In short, it's a classical centralized solution like Eucalyptus cloud , whereby there is a central control for all clusters in a top down topology. The central control actively collects available resource from each cluster and also proxy the request from one cluster to the other one.
>From my point of view this is where OpenStack comes to play and be different >from Eucalyptus when OpenStack goes to the direction of a decentralized and >distributed system. This is why I have some doubts about the solution from >Huawei. My question is if we have anything for distributed OpenStack over geography before? A decentralized OpenStack Cluster can be thought as follows: Each cluster has their own control node (nova-scheduler, neutron-server..), and has its own data base to work independently whereby: 1. Each cluster stores available resources of its local cluster only (for DB Sharding). This data does not need to be shared between clusters. And the API from one cluster can ask for healthy states from another one when needed. 2. All information about one tenant across multiple clusters, i.e tenant network, VMs info and meta data, should be shared the same and eventually consistent across clusters. For example: neutron-server creates a tenant network in its cluster, this tenant network information will be published to all other clusters data base for L2 population. 3. Any NoSQL DB out there can help for DB Sharding and Eventually Consistency. 4. Each cluster can have its own keystone server (Trust Provider). Each Trust Provider issues its trust, which also be trusted by the other provider if both providers trust each other certificates, similar to Web services SSO like SAML. Hope to get some feedbacks from you.  https://wiki.openstack.org/wiki/OpenStack_cascading_solution  https://www.eucalyptus.com/eucalyptus-cloud/iaas Kind Regards, Tri Hoang Vo Deutsche Telekom AG Product & Innovations Tri Hoang Vo Software Developer Dernburgstrasse 50, 14057 Berlin, Germany +49 151 649-22645 (Mobile) E-Mail: t.vo_ho...@telekom.de<mailto:maik.mus...@telekom.de> www.telekom.com<http://www.telekom.com/> Life is for sharing. Deutsche Telekom AG Supervisory Board: Prof. Dr. Ulrich Lehner (Chairman) Board of Management: Timotheus Höttges (Chairman), Reinhard Clemens, Niek Jan van Damme, Thomas Dannenfeldt, Dr. Thomas Kremer, Claudia Nemat, Commercial register: Amtsgericht Bonn HRB 6794 Registered office: Bonn conserve resources by not printing every e-mail.
_______________________________________________ OpenStack-dev mailing list OpenStackemail@example.com http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev