docker-machine命令在openstack上失败

我想在openstack环境中使用docker-machine命令，docker docker-machine --version给我docker-machine version 0.10.0 ，build为76ed2a6，所以我运行这个命令： docker-machine --debug create -d openstack --openstack-ssh-user ubuntu --openstack-auth-url http://controller:35357/v3 --openstack-image-name ubuntu --openstack-flavor-name m1.small --openstack-domain-name default --openstack-floatingip-pool public --openstack-net-name provider master1它给我这个错误： Error creating machine: Error in driver during machine creation: Expected HTTP response code [201 202] when accessing [POST http://controller:35357/v3/auth/tokens], but got 401 instead {"error": {"message": "The request you have made requires authentication.", "code": 401, "title": "Unauthorized"}}你有什么想法吗？