ironic/releasenotes/notes/agent-http-provisioning-d11...

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---
features:
- Adds the ability to provision with ``direct`` deploy interface and custom
HTTP service running at ironic conductor node. A new configuration option
``[agent]image_download_source`` is introduced. When set to ``swift``,
the ``direct`` deploy interface uses tempurl generated via the Object
service as the source of instance image during provisioning, this is the
default configuration. When set to ``http``, the ``direct`` deploy
interface downloads instance image from the Image service, and caches the
image in the ironic conductor node. The cached instance images are
referenced by symbolic links located at subdirectory
``[deploy]http_image_subdir`` under path ``[deploy]http_root``. The custom
HTTP server running at ironic conductor node is supposed to be configured
properly to make IPA has unauthenticated access to image URL described
above.