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I have the same issue

root@controller:/var/log/mysql# openstack token issue
Discovering versions from the identity service failed when creating the password plugin. Attempting to determine version from URL. Unable to establish connection to HTTPConnectionPool(host='', port=35357): Max retries exceeded with url: /v3/auth/tokens (Caused by NewConnectionError('<requests.packages.urllib3.connection.httpconnection object="" at="" 0x7fc480b60a50="">: Failed to establish a new connection: [Errno 111] Connection refused',))

Can anyone help me?