查看此问题的时候请先查看 这个问题包含在（十）中，此篇只是从（十）中分离出来
openstack-kilo--issue(十)ERROR: openstack Unable to establish connection to http://controller:35357/v3/auth/tokens
========================== 如果遇到下面这样的问题 请参考上面的网址的问题二的解决方案 ====================================
ImportError: Could not import settings 'openstack_dashboard.settings' (Is it on sys.path? Is there an import error in the settings file?): No module named main
1 [root@controller system]# systemctl status httpd.service
2 httpd.service - The Apache HTTP Server
3 Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled)
4 Drop-In: /usr/lib/systemd/system/httpd.service.d
5 └─openstack-dashboard.conf
6 Active: failed (Result: exit-code) since Tue 2016-12-27 15:37:33 CST; 15min ago
7 Process: 8204 ExecStartPre=/usr/bin/python /usr/share/openstack-dashboard/manage.py collectstatic --noinput --clear (code=e
8
9 Dec 27 15:37:33 controller python[8204]: File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 54, in __getat
10 Dec 27 15:37:33 controller python[8204]: self._setup(name)
11 Dec 27 15:37:33 controller python[8204]: File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 49, in _setup
12 Dec 27 15:37:33 controller python[8204]: self._wrapped = Settings(settings_module)
13 Dec 27 15:37:33 controller python[8204]: File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 132, in __init
14 Dec 27 15:37:33 controller python[8204]: % (self.SETTINGS_MODULE, e)
15 Dec 27 15:37:33 controller python[8204]: ImportError: Could not import settings 'openstack_dashboard.settings' (Is it on sys.
16 Dec 27 15:37:33 controller systemd[1]: httpd.service: control process exited, code=exited status=1
17 Dec 27 15:37:33 controller systemd[1]: Failed to start The Apache HTTP Server.
18 Dec 27 15:37:33 controller systemd[1]: Unit httpd.service entered failed state.
openstack-dashboard也出现了变化
[root@controller httpd.service.d]# openstack-status
== Nova services ==
openstack-nova-api: active
openstack-nova-cert: active
openstack-nova-compute: active
openstack-nova-network: inactive (disabled on boot)
openstack-nova-scheduler: active
openstack-nova-conductor: active
== Glance services ==
openstack-glance-api: active
openstack-glance-registry: active
== Keystone service ==
openstack-keystone: active
== Horizon service ==
openstack-dashboard: uncontactable
== neutron services ==
neutron-server: active