实际上，我是Openstack环境的新手，尤其是Openstack-Magnum项目。
我已经安装了带有皇后版本的Openstack服务：Nova，Neutron，Cinder，Heat ...然后，我遵循了Openstack Magnum安装指南：https://docs.openstack.org/magnum/latest/install/install-ubuntu.html
完成安装后，我运行以下命令来验证：
root@controller:~# openstack coe service list
| id | host | binary | state | disabled | disabled_reason | created_at | updated_at |
+----+------+------------------+-------+----------+-----------------+---------------------------+---------------------------+
| 1 | None | magnum-conductor | up | False | None | 2019-12-27T04:57:21+00:00 | 2019-12-27T10:13:52+00:00 |
+----+------+------------------+-------+----------+-----------------+---------------------------+---------------------------+
通过这一步，我认为一切都很好，然后我转向创建集群模板：
root@controller:~# openstack coe cluster template create kubernetes-cluster-template \
--image fedora-atomic-latest --external-network public \
--dns-nameserver 8.8.8.8 --master-flavor m1.small \
--flavor m1.small --coe kubernetes \
--docker-volume-size 3
显示错误：
语法无效（客户端（HTTP 500）（请求ID：req-a1b6a4a0-cfab-43c6-9110-89c8455db5c9）
检查后
root@controller:~# tail -f /var/log/magnum/magnum-api.log显示
File "/usr/lib/python2.7/dist-packages/keystoneauth1/identity/base.py", line 88, in get_token
return self.get_access(session).auth_token
File "/usr/lib/python2.7/dist-packages/keystoneauth1/identity/base.py", line 134, in get_access
self.auth_ref = self.get_auth_ref(session)
File "/usr/lib/python2.7/dist-packages/keystoneauth1/identity/generic/base.py", line 199, in get_auth_ref
self._plugin = self._do_create_plugin(session)
File "/usr/lib/python2.7/dist-packages/keystoneauth1/identity/generic/base.py", line 194, in _do_create_plugin
raise exceptions.DiscoveryFailure('Could not determine a suitable URL '
DiscoveryFailure: Could not determine a suitable URL for the plugin: DiscoveryFailure: Could not determine a suitable URL for the plugin
有人可以帮助我解决这个问题吗？我认为某些 url 可能无法连接，但是我已经在magnum.conf文件中检查了很多次，都没错。