** Changed in: nova
Status: Fix Committed => Fix Released
** Changed in: nova
Milestone: None => liberty-rc1
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https://bugs.launchpad.net/bugs/1390033
Title:
Inconsistent info of availability zone (az) if the default az is
replaced
Status in OpenStack Compute (nova):
Fix Released
Bug description:
Affected version: stable/juno
Description:
On a single-node deployment of OpenStack (using DevStack), if the default
availability zone of Nova is replaced by another one, then the API
api.nova.server_list returns the list of VMs in which the info of availability
zone is inconsistent. This results in the toggling effect of Horizon dashboard
when displaying the list of instances (under tab "Project/Instances"). The
toggling effect is caused by inconsistent info of availability zone whose
values either the default one or the newly-created one.
This bug can easily be reproduced using Horizon dashboard as follows:
- Go to tab "Admin/Host Aggregates" to create a new host aggregate which is
assigned with the current host. Pls note that if this newly-created host
aggregate is not assigned with any host, then the availability zone won't be
defined.
- After that, also under this view, we find (in the Availability zones) that
the newly-created availability zone hides away the default one.
- Go to tab "System information", we find that nova-compute service is
running in the newly-created availability zone while all the cinder services
are running in the default availability zone.
- Go to tab "Project/Image" to select some image for creating a new bootable
volume.
- This newly-created volume is then used to launch a new VM
- After launching a new VM, it's auto re-directed to the view of
"Instances". At here, we can observe the toggling effect on the availability
zone info.
Analysis:
Root cause is due to the API api.nova.server_list as described above.
This can be seen by adding some more debug info as follows:
2014-11-06 10:30:05,103 - my_logger - DEBUG -
openstack_dashboard.dashboards.project.instances.views - Instance
amount: 1, Instances: "[<Server: {'status': u'BUILD', 'OS-EXT-
STS:task_state': u'scheduling', 'addresses': {}, 'name':
u'from_vol_cirr_nova', 'links': [{u'href':
u'http://192.168.56.103:8774/v2/a0c581f7a88441ed84e9878fa9fc8e50/servers
/d5c1575d-8ac8-4921-802c-e9b121acd82e', u'rel': u'self'}, {u'href':
u'http://192.168.56.103:8774/a0c581f7a88441ed84e9878fa9fc8e50/servers
/d5c1575d-8ac8-4921-802c-e9b121acd82e', u'rel': u'bookmark'}],
'created': u'2014-11-06T10:30:03Z', 'key_name': None, 'image': u'',
'OS-DCF:diskConfig': u'AUTO', 'image_name': '-', 'OS-EXT-
STS:power_state': 0, 'OS-EXT-SRV-ATTR:host': None, 'OS-EXT-SRV-
ATTR:instance_name': u'instance-00000004', 'tenant_id':
u'a0c581f7a88441ed84e9878fa9fc8e50', 'user_id':
u'2f8c907029eb43e5ab98a55ac28c885e', 'flavor': {u'id': u'1', u'links':
[{u'href':
u'http://192.168.56.103:8774/a0c581f7a88441ed84e9878fa9fc8e50/flavors/1',
u'rel': u'bookmark'}]}, 'OS-EXT-AZ:availability_zone': u'nova', 'id':
u'd5c1575d-8ac8-4921-802c-e9b121acd82e', 'metadata': {}}>]"
2014-11-06 10:31:02,037 - my_logger - DEBUG -
openstack_dashboard.dashboards.project.instances.views - Instance amount: 1,
Instances: "[<Server: {'status': u'ACTIVE', 'OS-EXT-STS:task_state': None,
'addresses': {u'public': [{u'OS-EXT-IPS-MAC:mac_addr': u'fa:16:3e:13:01:55',
u'version': 4, u'addr': u'172.24.4.6', u'OS-EXT-IPS:type': u'fixed'}]}, 'name':
u'from_vol_cirr_nova', 'links': [{u'href':
u'http://192.168.56.103:8774/v2/a0c581f7a88441ed84e9878fa9fc8e50/servers/d5c1575d-8ac8-4921-802c-e9b121acd82e',
u'rel': u'self'}, {u'href':
u'http://192.168.56.103:8774/a0c581f7a88441ed84e9878fa9fc8e50/servers/d5c1575d-8ac8-4921-802c-e9b121acd82e',
u'rel': u'bookmark'}], 'created': u'2014-11-06T10:30:03Z', 'key_name': None,
'image': u'', 'OS-DCF:diskConfig': u'AUTO', 'image_name': '-',
'OS-EXT-STS:power_state': 1, 'OS-EXT-SRV-ATTR:host': u'ubuntu',
'OS-EXT-SRV-ATTR:instance_name': u'instance-00000004', 'tenant_id':
u'a0c581f7a88441ed84e9878fa9fc8e50', 'user_id': u'2f8c907029eb43e5ab98a55ac28
c885e', 'flavor': {u'id': u'1', u'links': [{u'href':
u'http://192.168.56.103:8774/a0c581f7a88441ed84e9878fa9fc8e50/flavors/1',
u'rel': u'bookmark'}]}, 'OS-EXT-AZ:availability_zone': u'test_az', 'id':
u'd5c1575d-8ac8-4921-802c-e9b121acd82e', 'metadata': {}}>]"
2014-11-06 10:31:32,437 - my_logger - DEBUG -
openstack_dashboard.dashboards.project.instances.views - Instance amount: 1,
Instances: "[<Server: {'status': u'ACTIVE', 'OS-EXT-STS:task_state': None,
'addresses': {u'public': [{u'OS-EXT-IPS-MAC:mac_addr': u'fa:16:3e:13:01:55',
u'version': 4, u'addr': u'172.24.4.6', u'OS-EXT-IPS:type': u'fixed'}]}, 'name':
u'from_vol_cirr_nova', 'links': [{u'href':
u'http://192.168.56.103:8774/v2/a0c581f7a88441ed84e9878fa9fc8e50/servers/d5c1575d-8ac8-4921-802c-e9b121acd82e',
u'rel': u'self'}, {u'href':
u'http://192.168.56.103:8774/a0c581f7a88441ed84e9878fa9fc8e50/servers/d5c1575d-8ac8-4921-802c-e9b121acd82e',
u'rel': u'bookmark'}], 'created': u'2014-11-06T10:30:03Z', 'key_name': None,
'image': u'', 'OS-DCF:diskConfig': u'AUTO', 'image_name': '-',
'OS-EXT-STS:power_state': 1, 'OS-EXT-SRV-ATTR:host': u'ubuntu',
'OS-EXT-SRV-ATTR:instance_name': u'instance-00000004', 'tenant_id':
u'a0c581f7a88441ed84e9878fa9fc8e50', 'user_id': u'2f8c907029eb43e5ab98a55ac28
c885e', 'flavor': {u'id': u'1', u'links': [{u'href':
u'http://192.168.56.103:8774/a0c581f7a88441ed84e9878fa9fc8e50/flavors/1',
u'rel': u'bookmark'}]}, 'OS-EXT-AZ:availability_zone': u'test_az', 'id':
u'd5c1575d-8ac8-4921-802c-e9b121acd82e', 'metadata': {}}>]"
When searching for the 'availability_zone' in the log above, it can be seen
that its value is really inconsistent. In fact, at the beginning when the
'task_state' is 'scheduling' then the availability zone is 'nova' (the default
one). However, later the availability zone changes to 'test_az' (the
newly-created one)
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