Dear All. In below link which is OpenStack Website. https://docs.openstack.org/glance/queens/install/install-ubuntu.html#install-and-configure-components It is showing like below. In the [keystone_authtoken] and [paste_deploy] sections, configure Identity service access: [keystone_authtoken] # ... auth_uri = http://controller:5000 auth_url = http://controller:5000 memcached_servers = controller:11211 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = glance password = GLANCE_PASS [paste_deploy] # ... flavor = keystone Why i have to add same two blow lines in the " /etc/glance/glance-api.conf" file? auth_uri = http://controller:5000 auth_url = http://controller:5000 Kevin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20180617/bac603e6/attachment.html>