Previously even I was getting the following error message:-

root@controller:/home/XXXXXX# glance image-create --name "cirros-0.3.3-x86_64" -  -file /tmp/images/cirros-0.3.3-x86_64-disk.img --disk-format qcow2 --container-f  ormat bare --is-public True --progress
[=============================>] 100%
Request returned failure status.
Invalid OpenStack Identity credentials.



Issue solved by changing the following in glance-api.conf & glance-registry.conf:
===================================================================================
[keystone_authtoken]
auth_uri = http://controller:5000/v2.0
identity_uri = http://controller:35357
admin_tenant_name = service
admin_user = XXXXXX
admin_password = XXXXXX

To this:
=========
auth_host = controller
auth_port = 35357
auth_protocol = http
admin_tenant_name = service
admin_user = XXXXXX
admin_password = XXXXXX
auth_uri = http://controller:5000




============
=VALIDATION=
============
root@controller:/home/XXXXXX# nano /etc/glance/glance-api.conf                    root@controller:/home/XXXXXX# nano /etc/glance/glance-registry.conf
root@controller:/home/XXXXXX# service glance-registry restart
glance-registry stop/waiting
glance-registry start/running, process 7550
root@controller:/home/XXXXXX# service glance-api restart
glance-api stop/waiting
glance-api start/running, process 7563
root@controller:/home/XXXXXX#
root@controller:/home/XXXXXX# source admin-openrc.sh
root@controller:/home/XXXXXX# glance image-create --name "cirros-0.3.3-x86_64" --file /tmp/images/cirros-0.3.3-x86_64-disk.img --disk-format qcow2 --container-format bare --is-public True --progress
[=============================>] 100%
+------------------+--------------------------------------+
| Property         | Value                                |
+------------------+--------------------------------------+
| checksum         | 51b8afbd2b6d36d7012280e9ede51e7e     |
| container_format | bare                                 |
| created_at       | 2015-06-08T18:14:12                  |
| deleted          | False                                |
| deleted_at       | None                                 |
| disk_format      | qcow2                                |
| id               | 9a8b12c9-f0d6-43a4-a23a-f4cc67fe89f1 |
| is_public        | True                                 |
| min_disk         | 0                                    |
| min_ram          | 0                                    |
| name             | cirros-0.3.3-x86_64                  |
| owner            | c3eab5d97c514aa4aec53ba1dc5aae40     |
| protected        | False                                |
| size             | 955802                               |
| status           | active                               |
| updated_at       | 2015-06-08T18:14:12                  |
| virtual_size     | None                                 |
+------------------+--------------------------------------+
root@controller:/home/XXXXXX# glance image-list
+--------------------------------------+---------------------+-------------+------------------+--------+--------+
| ID                                   | Name                | Disk Format | Container Format | Size   | Status |
+--------------------------------------+---------------------+-------------+------------------+--------+--------+
| 9a8b12c9-f0d6-43a4-a23a-f4cc67fe89f1 | cirros-0.3.3-x86_64 | qcow2       | bare             | 955802 | active |
+--------------------------------------+---------------------+-------------+------------------+--------+--------+
root@controller:/home/XXXXXX#