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Reviewed:  https://review.openstack.org/446761
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=261e7e3c5e4ee2b403f5c887bb75a8527a367135
Submitter: Jenkins
Branch:    master

commit 261e7e3c5e4ee2b403f5c887bb75a8527a367135
Author: melanie witt <melwittt@xxxxxxxxx>
Date:   Thu Mar 16 22:16:10 2017 +0000

    Improve descriptions for hostId, host, and hypervisor_hostname
    
    The current descriptions for hostId, host, and hypervisor_hostname are
    vague, so this adds more detail to make them more understandable.
    
    Closes-Bug: #1673593
    
    Change-Id: Id3ea9bbfe59a47b24e3584cf16b5a556007e58ea


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1673593

Title:
  api-ref: descriptions for the various host fields in server GET
  response are useless

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  This came up in a review for the mistaken use of the
  hypervisor_hostname field in the server GET response:

  https://review.openstack.org/#/c/446685/2/nova/tests/functional/regressions/test_bug_1671648.py@149

  Looking at the API ref:

  https://developer.openstack.org/api-ref/compute/?expanded=show-server-
  details-detail#id25

  There are three 'host' related fields in the response:

  1. hostId - The ID of the host.
  2. OS-EXT-SRV-ATTR:host - The host name. Appears in the response for administrative users only.
  3. OS-EXT-SRV-ATTR:hypervisor_hostname - The hypervisor host name. Appears in the response for administrative users only.

  The hostId is an obfuscated id for the hostname in the guest (server
  instance).

  The 'host' is the name of the compute host that the nova-compute
  service is running on. This comes from the 'host' configuration option
  value in nova.conf.

  The 'hypervisor_hostname' is the hostname of the hypervisor, provided
  by the compute driver, which in most cases is the same as 'host'
  *except* in the case of Ironic in which case it's the Ironic node
  name.

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