Hi Min Wang, This is error might be due to permission problem you *must run *these commands from root. The command * openssh rand -hex 10* will create the token which you have to put in /etc/keystone/keystone.conf in admin section. the mentioned command # export OS_SERVICE_TOKEN=<put token here generated from above openssl command> # export OS_SERVICE_ENDPOINT=http://controller:35357/v2.0 by executing this command as root you will not the error again. Hope this helps ! Thanks ! -- *Cheers,Mayur* S. Patil, Pune. Contact : <https://www.facebook.com/mayurram> <https://twitter.com/RamMayur> <https://plus.google.com/u/0/+MayurPatil/about> <http://in.linkedin.com/pub/mayur-patil/35/154/b8b/> <https://stackoverflow.com/users/1528044/rammayur> <https://mozillians.org/en-US/u/mayurp7/> <https://github.com/ramlaxman> <https://www.ohloh.net/accounts/mayurp7> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20140416/1b524d35/attachment.html>