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In the dashboard horizon, I have this error message :

Error: Failed to perform requested operation on instance "deb", the instance has an error status: Please try again later [Error: Exceeded maximum number of retries. Exceeded max scheduling attempts 3 for instance 90c6159e-28dc-4ad1-96a3-a0548be26065. Last exception: Invalid input for field 'identity/password/user/password': None is not of type 'string' (HTTP 400) (Request-ID: req-b].

I don't understand which identity it talking about.

In the dashboard horizon, I have this error message :

Error: Failed to perform requested operation on instance "deb", the instance has an error status: Please try again later [Error: Exceeded maximum number of retries. Exceeded max scheduling attempts 3 for instance 90c6159e-28dc-4ad1-96a3-a0548be26065. Last exception: Invalid input for field 'identity/password/user/password': None is not of type 'string' (HTTP 400) (Request-ID: req-b].

root@controller:# tail -f /var/log/nova/nova-conductor.log

2017-06-23 10:56:58.955 5609 WARNING oslo_config.cfg [req-4476f711-dd2d-463b-94a4-03aeb8317776 c070e9c342824ef3ba41336373a17b91 05696ec4daa44a1c89a26761b621a507 - - -] Option "scheduler_default_filters" from group "DEFAULT" is deprecated. Use option "enabled_filters" from group "filter_scheduler".
2017-06-23 10:57:01.717 5610 ERROR nova.scheduler.utils [req-4476f711-dd2d-463b-94a4-03aeb8317776 c070e9c342824ef3ba41336373a17b91 05696ec4daa44a1c89a26761b621a507 - - -] [instance: 6956232b-17fb-4344-ba20-331c3fb6bbf8] Error from last host: compute1 (node compute1): [u'Traceback (most recent call last):\n', u'  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1780, in _do_build_and_run_instance\n    filter_properties)\n', u'  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2016, in _build_and_run_instance\n    instance_uuid=instance.uuid, reason=six.text_type(e))\n', u"RescheduledException: Build of instance 6956232b-17fb-4344-ba20-331c3fb6bbf8 was re-scheduled: Invalid input for field 'identity/password/user/password': None is not of type 'string' (HTTP 400) (Request-ID: req-c25e7d09-ece3-43ec-ad2b-3c059f8e417d)\n"]
2017-06-23 10:57:01.718 5610 WARNING nova.scheduler.utils [req-4476f711-dd2d-463b-94a4-03aeb8317776 c070e9c342824ef3ba41336373a17b91 05696ec4daa44a1c89a26761b621a507 - - -] Failed to compute_task_build_instances: Exceeded maximum number of retries. Exceeded max scheduling attempts 3 for instance 6956232b-17fb-4344-ba20-331c3fb6bbf8. Last exception: Invalid input for field 'identity/password/user/password': None is not of type 'string' (HTTP 400) (Request-ID: req-c25e7d09-ece3-43ec-ad2b-3c059f8e417d)

I don't understand which identity it talking about.