Instance creation failed: Unable to create the server.

[Shajeer]

Followed the steps present in below link to create a instance
https://docs.openstack.org/newton/install-guide-rdo/launch-instance-selfservice.html

When tried to create an instance it throws Unexpected API Error. Please help.

Attached the nova-api.log for your reference

[root@controller etc]# openstack flavor list
+----+---------+------+------+-----------+-------+-----------+
| ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public |
+----+---------+------+------+-----------+-------+-----------+
| 0 | m1.nano | 2048 | 10 | 0 | 1 | True |
+----+---------+------+------+-----------+-------+-----------+
[root@controller etc]# openstack image list
+--------------------------------------+--------+--------+
| ID | Name | Status |
+--------------------------------------+--------+--------+
| 035b1118-5b11-40b1-b86b-de316b18dd34 | centos | active |
| 20d44d5f-4547-418e-a964-84f38682e4cd | cirros | active |
+--------------------------------------+--------+--------+
[root@controller etc]# openstack network list
+--------------------------------------+-------------+--------------------------------------+
| ID | Name | Subnets |
+--------------------------------------+-------------+--------------------------------------+
| 18770c07-7aa6-41a8-b3cf-4396cee203eb | provider | 5355ef76-7424-4c84-bfb1-bcc6cc6db215 |
| 9339a6a8-661b-4072-9332-edcde242217f | selfservice | e33704ba-ed18-42b2-a312-1a6e39254e1d |
+--------------------------------------+-------------+--------------------------------------+
[root@controller etc]# openstack server create --flavor m1.nano --image centos --nic net-id=9339a6a8-661b-4072-9332-edcde242217f --security-group default --key-name mykey selfservice-instance
Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<type 'exceptions.TypeError'> (HTTP 500) (Request-ID: req-66ef449b-a92d-46d3-9ab1-7a735b990433)
[root@controller etc]#

[Matt Riedemann (mriedem)]

You don't have [glance]api_servers set in nova.conf:

2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions [req-37e6fa7c-a06f-448b-89e0-554cad79d8c5 5dbdb080a5de495d82f8488dfb9d395b a4185d11a0124aed95cd4892b3e4f563 - default default] Unexpected exception in API method
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions Traceback (most recent call last):
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/api/openstack/extensions.py", line 338, in wrapped
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions return f(*args, **kwargs)
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/api/openstack/compute/images.py", line 90, in show
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions image = self._image_api.get(context, id)
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/image/api.py", line 93, in get
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions show_deleted=show_deleted)
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 477, in show
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions _reraise_translated_image_exception(image_id)
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 1069, in _reraise_translated_image_exception
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions six.reraise(new_exc, None, exc_trace)
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 475, in show
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions image = self._client.call(context, 2, 'get', image_id)
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 173, in call
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions version)
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 152, in _create_onetime_client
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions self.api_servers = get_api_servers()
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions File "/usr/lib/python2.7/site-packages/nova/image/glance.py", line 114, in get_api_servers
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions for api_server in CONF.glance.api_servers:
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions TypeError: 'NoneType' object is not iterable
2017-02-18 12:38:28.592 7395 ERROR nova.api.openstack.extensions

#
# List of glance api servers endpoints available to nova.
#
# https is used for ssl-based glance api servers.
#
# Possible values:
#
# * A list of any fully qualified url of the form
# "scheme://hostname:port[/path]"
# (i.e. "http://10.0.1.0:9292" or "https://my.glance.server/image")...

[Matt Riedemann (mriedem)]

Actually we need to handle this since we shouldn't return a 500 out of the REST API.

[Matt Riedemann (mriedem)]

Nevermind this is an internal server error, so 500 is the correct error here.