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[Swati Bansal <1770343@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

In "nova-manage cell_v2 create_cell" CLI command the optional parameter ie. "transport-url" and "database_connection" are treated as positional arguments and  CLI throws an error "The specified transport_url and/or database_connection combination already exists for another cell with uuid 313fe809-ce91-490a-b147-4a74dc0ad071".
"313fe809-ce91-490a-b147-4a74dc0ad071" is cell-uuid of already created cell.

<Supplementary Information>
The parameters connection and transport_url are specified in nova.conf file and only one cell is mapped to this configurations. 
- If one more cell is created with same values as in nova.conf, then error occurs.
- If no parameter ie. "transport-url" and "database_connection" are given then the default values from nova.conf are picked which result into duplicate combination of  transport_url and/or database_connection

Both the arguments must be positional.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1770343

Title:
  transport-url and database_connection parameter must be positional in
  nova-manage cell_v2 create_cell command

Status in OpenStack Compute (nova):
  New

Bug description:
  In "nova-manage cell_v2 create_cell" CLI command the optional parameter ie. "transport-url" and "database_connection" are treated as positional arguments and  CLI throws an error "The specified transport_url and/or database_connection combination already exists for another cell with uuid 313fe809-ce91-490a-b147-4a74dc0ad071".
  "313fe809-ce91-490a-b147-4a74dc0ad071" is cell-uuid of already created cell.

  <Supplementary Information>
  The parameters connection and transport_url are specified in nova.conf file and only one cell is mapped to this configurations. 
  - If one more cell is created with same values as in nova.conf, then error occurs.
  - If no parameter ie. "transport-url" and "database_connection" are given then the default values from nova.conf are picked which result into duplicate combination of  transport_url and/or database_connection

  Both the arguments must be positional.

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