Invalid OpenStack Identity credentials.

hello friends i m shailendra i need ur help in installation of openstack. i m trying icehouse manual but i got stuck here

when it comes to create user using

keystone user-create --name=admin --pass=shail123 --email=example@gmail.com
it shows error
Invalid OpenStack Identity credentials.

now i m sick off friends plz tell the solution

Please ask this question on the OpenStack mailing list.

This does not appear to be related to ansible.

If you set it up with Ansible, first consider checking your authentication with Horizon.

If you think you have an error with the ansible modules for OpenStack, that would be in scope for this list, but possibly not debugging your entire OpenStack playbook configuration.