Redhat7搭建L版本，实例创建问题

nova boot --flavor m1.tiny --image cirros --nic net-id=a0bde269-d320-4853-9045-e2e90ba14031 \
>   --security-group default --key-name mykey public-instance
ERROR (ClientException): Unexpected API Error. Please report this athttp://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<class 'keystoneclient.exceptions.BadRequest'> (HTTP 500) (Request-ID: req-c0467d40-2fff-42b4-915a-d5ff3f1a7ff0)

nova boot --flavor m1.tiny --image cirros --nic net-id=9d4daabf-ef36-4949-90e5-9904851d4a4a \
          --security-group default  public-instance

2016-01-14 11:00:16.143 11528 ERROR nova.api.openstack.extensions BadRequest: Expecting to find username or userId in passwordCredentials - the server could not comply with the request since it is either malformed or otherwise incorrect. The client is assumed to be in error. (HTTP 400) (Request-ID: req-5a787291-5ea7-42ec-8afc-c9cb2e826fa8)

在computer节点中的nova.conf缺少关于neutron的配置，添加以后配置即可解决

The document is missing this block in nova.conf

[neutron]
url = http://controller:9696
auth_url = http://controller:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
region_name = RegionOne
project_name = service
username = neutron
password = neutron_pass

Adding this fixed this issue for my Kilo install.