Merge #649 docs: Add overview of what each phase does
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Dennis Gilmore
commit
72081a3a35
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doc/_static/phases.svg
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<text
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id="tspan301">OSBS</tspan></text>
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</g>
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</svg>
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After Width: | Height: | Size: 18 KiB |
|
Before Width: | Height: | Size: 13 KiB After Width: | Height: | Size: 13 KiB |
@ -2,7 +2,7 @@
|
|||||||
About Pungi
|
About Pungi
|
||||||
=============
|
=============
|
||||||
|
|
||||||
.. figure:: pungi_snake-sm-dark.png
|
.. figure:: _static/pungi_snake-sm-dark.png
|
||||||
:align: right
|
:align: right
|
||||||
:alt: Pungi Logo
|
:alt: Pungi Logo
|
||||||
|
|
||||||
|
|||||||
@ -17,3 +17,4 @@ Contents:
|
|||||||
format
|
format
|
||||||
configuration
|
configuration
|
||||||
messaging
|
messaging
|
||||||
|
phases
|
||||||
|
|||||||
151
doc/phases.rst
Normal file
151
doc/phases.rst
Normal file
@ -0,0 +1,151 @@
|
|||||||
|
.. _phases:
|
||||||
|
|
||||||
|
Phases
|
||||||
|
======
|
||||||
|
|
||||||
|
Each invocation of ``punji-koji`` consists of a set of phases.
|
||||||
|
|
||||||
|
.. image:: _static/phases.svg
|
||||||
|
:alt: phase diagram
|
||||||
|
|
||||||
|
Most of the phases run sequentially (left-to-right in the diagram), but there
|
||||||
|
are use cases where multiple phases run in parallel. This happens for phases
|
||||||
|
whose main point is to wait for a Koji task to finish.
|
||||||
|
|
||||||
|
Init
|
||||||
|
----
|
||||||
|
|
||||||
|
The first phase to ever run. Can not be skipped. It prepares the comps files
|
||||||
|
for variants (by filtering out groups and packages that should not be there).
|
||||||
|
|
||||||
|
Pkgset
|
||||||
|
------
|
||||||
|
|
||||||
|
This phase loads a set of packages that should be composed. It has two separate
|
||||||
|
results: it prepares repos with packages in ``work/`` directory (one per arch)
|
||||||
|
for further processing, and it returns a data structure with mapping of
|
||||||
|
packages to architectures.
|
||||||
|
|
||||||
|
Buildinstall
|
||||||
|
------------
|
||||||
|
|
||||||
|
Spawns a bunch of threads, each of which runs either ``lorax`` or
|
||||||
|
``buildinstall`` command (the latter coming from ``anaconda`` package). The
|
||||||
|
commands create ``boot.iso`` and other boot configuration files. The image is
|
||||||
|
finally linked into the ``compose/`` directory as netinstall media.
|
||||||
|
|
||||||
|
The created images are also needed for creating live media or other images in
|
||||||
|
later phases.
|
||||||
|
|
||||||
|
With ``lorax`` this phase runs one task per variant.arch combination. For
|
||||||
|
``buildinstall`` command there is only one task per architecture and
|
||||||
|
``product.img`` should be used to customize the results.
|
||||||
|
|
||||||
|
Gather
|
||||||
|
------
|
||||||
|
|
||||||
|
This phase uses data collected by ``pkgset`` phase and figures out what
|
||||||
|
packages should be in each variant. The basic mapping can come from comps file,
|
||||||
|
a JSON mapping or ``additional_packages`` config option. This inputs can then
|
||||||
|
be enriched by adding all dependencies.
|
||||||
|
|
||||||
|
Once the mapping is finalized, the packages are linked to appropriate places
|
||||||
|
and the ``rpms.json`` manifest is created.
|
||||||
|
|
||||||
|
ExtraFiles
|
||||||
|
----------
|
||||||
|
|
||||||
|
This phase collects extra files from the configuration and copies them to the
|
||||||
|
compose directory. The files are described by a JSON file in the compose
|
||||||
|
subtree where the files are copied. This metadata is meant to be distributed
|
||||||
|
with the data (on ISO images).
|
||||||
|
|
||||||
|
Createrepo
|
||||||
|
----------
|
||||||
|
|
||||||
|
This phase creates RPM repositories for each variant.arch tree. It is actually
|
||||||
|
reading the ``rpms.json`` manifest to figure out which packages should be
|
||||||
|
included.
|
||||||
|
|
||||||
|
OSTree
|
||||||
|
------
|
||||||
|
|
||||||
|
Updates an ostree repository with a new commit with packages from the compose.
|
||||||
|
The repository lives outside of the compose and is updated immediately. If the
|
||||||
|
compose fails in a later stage, the commit will not be reverted.
|
||||||
|
|
||||||
|
Implementation wise, this phase runs ``rpm-ostree`` command in Koji runroot (to
|
||||||
|
allow running on different arches).
|
||||||
|
|
||||||
|
Productimg
|
||||||
|
----------
|
||||||
|
|
||||||
|
Creates ``product.img`` files for customizing the bootable media created in
|
||||||
|
``buildinstall`` phase.
|
||||||
|
|
||||||
|
Createiso
|
||||||
|
---------
|
||||||
|
|
||||||
|
Generates ISO files and accumulates enough metadata to be able to create
|
||||||
|
``image.json`` manifest. The file is however not created in this phase, instead
|
||||||
|
it is dumped in the ``pungi-koji`` script itself.
|
||||||
|
|
||||||
|
The files include a repository with all RPMs from the variant. There will be
|
||||||
|
multiple images if the packages do not fit on a single image.
|
||||||
|
|
||||||
|
The image will be bootable if ``buildinstall`` phase is enabled and the
|
||||||
|
packages fit on a single image.
|
||||||
|
|
||||||
|
There can also be images with source repositories. These are never bootable.
|
||||||
|
|
||||||
|
LiveImages, LiveMedia
|
||||||
|
---------------------
|
||||||
|
|
||||||
|
Creates media in Koji with ``koji spin-livecd``, ``koji spin-appliance`` or
|
||||||
|
``koji spin-livemedia`` command. When the media are finished, the images are
|
||||||
|
copied into the ``compose/`` directory and metadata for images is updated.
|
||||||
|
|
||||||
|
ImageBuild
|
||||||
|
----------
|
||||||
|
|
||||||
|
This phase wraps up ``koji image-build``. It also updates the metadata
|
||||||
|
ultimately responsible for ``images.json`` manifest.
|
||||||
|
|
||||||
|
OSBS
|
||||||
|
----
|
||||||
|
|
||||||
|
This phase builds docker base images in `OSBS
|
||||||
|
<http://osbs.readthedocs.io/en/latest/index.html>`_.
|
||||||
|
|
||||||
|
The finished images are available in registry provided by OSBS, but not
|
||||||
|
downloaded directly into the compose. The is metadata about the created image
|
||||||
|
in ``compose/metadata/osbs.json``.
|
||||||
|
|
||||||
|
OSTreeInstaller
|
||||||
|
---------------
|
||||||
|
|
||||||
|
Creates bootable media that carry an ostree repository as a payload. These
|
||||||
|
images are created by running ``lorax`` with special templates. Again it runs
|
||||||
|
in Koji runroot.
|
||||||
|
|
||||||
|
ImageChecksum
|
||||||
|
-------------
|
||||||
|
|
||||||
|
Responsible for generating checksums for the images. The checksums are stored
|
||||||
|
in image manifest as well as files on disk. The list of images to be processed
|
||||||
|
is obtained from the image manifest. This way all images will get the same
|
||||||
|
checksums irrespective of the phase that created them.
|
||||||
|
|
||||||
|
Test
|
||||||
|
----
|
||||||
|
|
||||||
|
This phase is supposed to run some sanity checks on the finished compose.
|
||||||
|
|
||||||
|
The first test is to run ``repoclosure`` on each repository. However, even if
|
||||||
|
it fails, the compose will still be considered a success. The actual error has
|
||||||
|
to be looked up in the compose logs directory.
|
||||||
|
|
||||||
|
The other test is to check all images listed the metadata and verify that they
|
||||||
|
look sane. For ISO files headers are checked to verify the format is correct,
|
||||||
|
and for bootable media a check is run to verify they have properties that allow
|
||||||
|
booting.
|
||||||
Loading…
Reference in New Issue
Block a user