问使用python SDK v2进行Openstack身份验证

EN

export AUTH_URL="https://my_url:5000/v2.0/tokens"
curl -v -X POST $AUTH_URL -d '{"auth":{"passwordCredentials":{"username": "myusername", "password":"myuser_password"}, "tenantId":"my_tenant_id"}}' -H 'Content-type: application/json' | python -m json.tool

Traceback (most recent call last):
  File "./test.py", line 10, in <module>
    keystone = ksclient.Client(auth_url=auth_url, username=user_name, password=user_pwd, tenant_name=tenant_name)
  File "/usr/lib/python2.7/site-packages/keystoneclient/v2_0/client.py", line 176, in __init__
    self.authenticate()
  File "/usr/lib/python2.7/site-packages/positional/__init__.py", line 101, in inner
    return wrapped(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/keystoneclient/httpclient.py", line 581, in authenticate
    resp = self.get_raw_token_from_identity_service(**kwargs)
  File "/usr/lib/python2.7/site-packages/keystoneclient/v2_0/client.py", line 220, in get_raw_token_from_identity_service
    _("Authorization Failed: %s") % e)
keystoneauth1.exceptions.auth.AuthorizationFailure: Authorization Failed: The resource could not be found. (HTTP 404) (Request-ID: 

#!/usr/bin/env python

import keystoneclient.v2_0.client as ksclient

auth_url  = "https://my_url:5000/v2.0/tokens"
user_name = "myusername"
user_pwd  = "myuser_password"
tenant_name = "my_tenant_id"

keystone = ksclient.Client(auth_url=auth_url, username=user_name, password=user_pwd, tenant_name=tenant_name)

print keystone.auth_token