Instances fail to spawn on a Compute node

Issue

• It looks like for some reason the Compute node tries to connect to Glance using its own IP address.
• Instance fail to launch

2015-11-30 16:36:36.821 75614 ERROR nova.image.glance [req-ee0be8a3-f981-4ad3-b466-72921c4b24b3 09d542b5311340eb87138e00b5bb13f1 da9c5226a3e34126ae77117f54234507 - - -] Error contacting glance server '10.225.21.29:9292' for 'data', done trying.
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance Traceback (most recent call last):
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance   File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 219, in call
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance     return getattr(client.images, method)(*args, **kwargs)
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance   File "/usr/lib/python2.7/site-packages/glanceclient/v1/images.py", line 143, in data
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance     % urlparse.quote(str(image_id)))
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance   File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 262, in get
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance     return self._request('GET', url, **kwargs)
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance   File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 217, in _request
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance     raise exc.CommunicationError(message=message)
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance CommunicationError: Error finding address for http://10.225.21.29:9292/v1/images/098eb7e9-b2e4-40ad-9462-6ec96932977e: ('Connection aborted.', error(111, 'ECONNREFUSED'))
2015-11-30 16:36:36.821 75614 TRACE nova.image.glance 
2015-11-30 16:36:36.821 75614 ERROR nova.compute.manager [req-ee0be8a3-f981-4ad3-b466-72921c4b24b3 09d542b5311340eb87138e00b5bb13f1 da9c5226a3e34126ae77117f54234507 - - -] [instance: 11a0f94f-c290-41d1-b46e-564e0243632e] Instance failed to spawn
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e] Traceback (most recent call last):
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2480, in _build_resources
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     yield resources
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2352, in _build_and_run_instance
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     block_device_info=block_device_info)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 2456, in spawn
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     admin_pass=admin_password)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 2864, in _create_image
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     instance, size, fallback_from_host)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 6040, in _try_fetch_image_cache
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     size=size)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 231, in cache
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     *args, **kwargs)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 507, in create_image
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     prepare_template(target=base, max_size=size, *args, **kwargs)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 445, in inner
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     return f(*args, **kwargs)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 221, in fetch_func_sync
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     fetch_func(target=target, *args, **kwargs)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/utils.py", line 507, in fetch_image
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     max_size=max_size)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/images.py", line 87, in fetch_to_raw
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     max_size=max_size)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/virt/images.py", line 77, in fetch
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     IMAGE_API.download(context, image_href, dest_path=path)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/image/api.py", line 182, in download
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     dst_path=dest_path)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 352, in download
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     _reraise_translated_image_exception(image_id)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 350, in download
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     image_chunks = self._client.call(context, 1, 'data', image_id)
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]   File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 237, in call
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]     host=host, port=port, reason=six.text_type(e))
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e] GlanceConnectionFailed: Connection to glance host 10.225.21.29:9292 failed: Error finding address for http://10.225.21.29:9292/v1/images/098eb7e9-b2e4-40ad-9462-6ec96932977e: ('Connection aborted.', error(111, 'ECONNREFUSED'))
2015-11-30 16:36:36.821 75614 TRACE nova.compute.manager [instance: 11a0f94f-c290-41d1-b46e-564e0243632e]