diskimage-builder/doc/source/developer/components.rst

Components
==========

`disk-image-create [-a i386|amd64|armhf|arm64] -o filename {element} [{element} ...]`

    Create an image of element {element}, optionally mixing in other elements.
    Element dependencies are automatically included. Support for other
    architectures depends on your environment being able to run binaries of
    that platform and/or packages being available for the architecture. For
    instance, to enable armhf on Ubuntu install the qemu-user-static package,
    or to enable arm64 on CentOS setup the RDO aarch64 package repositories.
    The default output format from disk-image-create is qcow2. To instead
    output a tarball pass in "-t tar". This tarball could then be used as an
    image for a linux container(see docs/docker.md).

`ramdisk-image-create -o filename {element} [{element} ...]`

    Create a kernel+ ramdisk pair for running maintenance on bare metal
    machines (deployment, inventory, burnin etc).

    To generate kernel+ramdisk pair for use with nova-baremetal, use::

        ramdisk-image-create -o deploy.ramdisk deploy-baremetal

    To generate kernel+ramdisk pair for use with ironic, use::

        ramdisk-image-create -o deploy.ramdisk ironic-agent


`element-info`

    Extract information about elements.

`tests/run_functests.sh`

    This runs a set of functional tests for diskimage-builder.

elements can be found in the top level elements directory.