Description of problem: Bug #1337661 describes a new way for building Sahara images, in addition to the existing sahara-image-elements command described in https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/12/html-single/openstack_data_processing/#createhadoopimg That section of the documentation should describe also this new way of building images. Relevant details (more will be added): - the command is sahara-image-pack, provided in the package openstack-sahara-image-pack; - sahara-image-pack does not create a new disk image like sahara-image-elements, but changes directly the disk image specified as parameter; - sahara-image-pack does not register the disk image to RHSM, but it assumes that the repositories are already configured. A way to achieve this is the usage of virt-customize (check the upstream documentation) More details are available in the upstream documentation: https://docs.openstack.org/sahara/queens/contributor/image-gen.html (see also the paragraph "Note: In case of a RHEL 7 images...")