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diff --git a/docs/requirements/use_cases/georedundancy_cells.rst b/docs/requirements/use_cases/georedundancy_cells.rst deleted file mode 100644 index ad664e8..0000000 --- a/docs/requirements/use_cases/georedundancy_cells.rst +++ /dev/null @@ -1,61 +0,0 @@ -.. This work is licensed under a Creative Commons Attribution 4.0 International License. -.. http://creativecommons.org/licenses/by/4.0 - -Connection between different OpenStack cells --------------------------------------------- -Description -~~~~~~~~~~~ -There should be an API to manage the infrastructure-s networks between two -OpenStack cells. (Note: In the Mitaka release of OpenStack cells v1 are -considered as experimental, while cells v2 functionality is under -implementation). Cells are considered to be problematic from maintainability -perspective as the sub-cells are using only the internal message bus and there -is no API (and CLI) to do maintenance actions in case of a network connectivity -problem between the main cell and the sub cells. - -The following figure (:numref:`cells-architecture`) shows the architecture of -the most relevant OpenStack components in multi cell OpenStack environment. - -.. figure:: images/cells-architecture.png - :name: cells-architecture - :width: 50% - -The functionality behind the API depends on the underlying network providers (SDN -controllers) and the networking setup. -(For example OpenDaylight has an API to add new BGP neighbor.) - -OpenStack Neutron should provide an abstracted API for this functionality what -calls the underlying SDN controllers API. - -Derived Requirements -~~~~~~~~~~~~~~~~~~~~~ - - Possibility to define a remote and a local endpoint - - As in case of cells the nova-api service is shared it should be possible - to identify the cell in the API calls - -Northbound API / Workflow -+++++++++++++++++++++++++ - - An infrastructure network management API is needed - - API call to define the remote and local infrastructure endpoints - - When the endpoints are created neutron is configured to use the new network. - -Dependencies on compute services -++++++++++++++++++++++++++++++++ - None. - -Data model objects -++++++++++++++++++ - - local and remote endpoint objects (Most probably IP addresses with some - additional properties). - -Current implementation -~~~~~~~~~~~~~~~~~~~~~~ - Current OpenStack implementation provides no way to set up the underlay - network connection. - OpenStack Tricircle project [TRICIRCLE]_ - has plans to build up inter datacenter L2 and L3 networks. - -Gaps in the current solution -~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - An infrastructure management API is missing from Neutron where the local and - remote endpoints of the underlay network could be configured. |