yahoo-eng-team team mailing list archive

[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Changing the database like this isn't really supported. You'd likely
need to delete the old cell and map the hosts to a new cell using the
nova-manage cell_v2 * commands like create_cell, map_instances and
discover_hosts.

** Tags added: cells

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1785193

Title:
  changing a node's cell results in duplicate hypervisors

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  Description
  ===========
  Changing a node's cell through nova.conf and then restarting nova-compute will result in duplicate hypervisor records for that node.

  Steps to reproduce
  ==================
  1. edit nova.conf on a compute node, to update [database].connection and [DEFAULT].transport_url to another cell's.
  2 restart nova-compute service
  3 nova hypervisor-list

  Expected result
  ===============
  Not sure what to expect yet.

  Actual result
  =============
  +--------------------------------------+---------------------+-------+---------+
  | ID                                   | Hypervisor hostname | State | Status  |
  +--------------------------------------+---------------------+-------+---------+
  | a40d3d87-21c0-5728-a9ea-c2bdc544a148 | compute             | up    | enabled |
  | b87f790c-4160-4540-b4a9-2dbcfbe9d019 | compute             | up    | enabled |
  +--------------------------------------+---------------------+-------+---------+

  The following error is also captured in nova-compute.log:

  nova.scheduler.client.report [req-ee9c94db-9ea6-7358-97a7-444a31db3a2c
  - - - - -] [req-7b4fa3d6-3f17-5895-a3c5-54562d02b10b] Failed to create
  resource provider record in placement API for UUID a40d3d87-21c0-5728
  -a9ea-c2bdc544a148. Got 409: {"errors": [{"status": 409, "request_id":
  "req-7b4fa3d6-3f17-5895-a3c5-54562d02b10b", "detail": "There was a
  conflict when trying to complete your request.\n\n Conflicting
  resource provider name: compute already exists.  ", "title":
  "Conflict"}]}.

  Environment
  ===========
  openstack-nova-compute-17.0.5-1.el7.noarch (queens release)

  Logs & Configs
  ==============
  not related

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