Dears: I am a openstack user, and I want to enable a Windows 2012 server in openstack, I follow the guides: https://docs.openstack.org/mitaka/config-reference/compute/hypervisor-hyper-v.html https://cloudbase.it/open-vswitch-2-5-hyper-v-part-1/ But it seems that some key points of those guides are not clear enough, since I had seen hyper-v PC in dashboard, but can't create instance on hyper-v PC with following error message: 2017-07-30 17:37:44.622 1460 ERROR nova.compute.manager [instance: 1036dbc7-3d08-4788-92d9-f2491589e685] ConnectFailure: Unable to establish connection to http://controller_ip:9696/v2.0/ports.json?device_id=1036dbc7-3d08-4788-92d9-f2491589e685: HTTPConnectionPool(host='controller_ip', port=9696): Max retries exceeded with url: /v2.0/ports.json?device_id=1036dbc7-3d08-4788-92d9-f2491589e685 (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x0000000008B97CC0>: Failed to establish a new connection: [Errno 10061] WSAECONNREFUSED',)) Could you help to check this error? And do openstack hyper-v has an effective guide? Thank you very much! Thank you, Xiaonan -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20170803/33248b12/attachment.html>