[Rdo-list] nova list returned "unauthorized" error

Hello, I am installing icehouse from RDO, on a 3-nodes testbed. One controller, one network and one compute node. I am using RDO release on RHEL6.5 system. After sourcing the keystone_admin file, the "nova list" command fails, the nova/api.log file shows the following messages: # nova list ERROR: Unauthorized (HTTP 401) # tail /var/log/nova/api.log 2014-08-05 11:41:21.941 5888 WARNING keystoneclient.middleware.auth_token [-] Configuring admin URI using auth fragments. This is deprecated, use 'identity_uri' instead. 2014-08-05 11:41:22.192 5888 WARNING keystoneclient.middleware.auth_token [-] Configuring admin URI using auth fragments. This is deprecated, use 'identity_uri' instead. 2014-08-05 14:18:39.408 5932 WARNING keystoneclient.middleware.auth_token [-] Unexpected response from keystone service: {u'error': {u'message': u'The request you have made requires authentication.', u'code': 401, u'title': u'Unauthorized'}} 2014-08-05 14:18:39.409 5932 WARNING keystoneclient.middleware.auth_token [-] Authorization failed for token With the same admin username/password, the keystone/glance commands work fine. I have the following section in nova.conf file, which looks fine to me: [DEFAULT] ... auth_strategy=keystone ... [keystone_authtoken] auth_host=10.255.2.134 auth_port=35357 auth_protocol=http auth_uri=http://10.255.2.134:5000 admin_user=compute admin_password=computepassword admin_tenant_name=services Any idea where it goes wrong ? Thanks a lot, Xin