# OSBuild - Build-Pipelines for Operating System Artifacts
## CHANGES WITH 18:
* All the RHEL runners now always use platform-python. This is the
python3.6 based interpreter that provides a stable platform for
system software based on python to be used. It is also always
available, in contrast to the python3 binary, that needs to be
installed separately.
* The `org.osbuild.selinux` stage now support label overwrites, i.e.
manually specifying the label specific files and directories.
* Improvements to the testing infrastructure, including new tests for
the `org.osbuild.selinux` stage and the `org.osbuild.ostree.commit`
assembler. Additionally, the tests do not rely on the `nbd` kernel
module, which seems to have stability issues.
Contributions from: Christian Kellner
— Berlin, 2020-06-23
## CHANGES WITH 17:
* SELinux: When osbuild is creating the file system tree it can happen
that the security policy of the new tree contains SELinux labels that
are unknown to the host. The kernel will prevent writing and reading
those labels unless the caller has the `CAP_MAC_ADMIN` capability.
A custom SELinux policy was created that ensures that `setfiles` and
`ostree` / `rpm-ostree` can execute in the right SELinux domain and
therefore have the correct capability. Additionally, the build root
container now retains the `CAP_MAC_ADMIN` capability.
* The `org.osbuild.ostree.commit` assembler will now set the pipeline
id as the value for the `rpm-ostree.inputhash` metadata of the commit.
* The `org.osbuild.files` source is now more conservative by only using
four concurrent downloads. It will also not try to fetch the same URL
more than once.
* Take care not to put large content on `/tmp` which is usually backed
by a `tmpfs` and thus memory.
* Allow `check_gpg` to be omitted in the `org.osbuild.rpm` stage.
* Restore Python 3.6 support: Replace the usage of features that were
introduced in later Python versions and add 3.6 specific code where
needed.
* MPP: add pipeline-import support for the pre-processor and use that
for the test data.
* Tests: Move the all remaining test into the correct sub-directory.
* As always: improvements to the test infrastructure and the CI.
Contributions from: Christian Kellner, David Rheinsberg, Lars Karlitski,
Major Hayden, Tom Gundersen
— Berlin, 202-06-10
## CHANGES WITH 16:
* Support for ignition: a new `org.osbuild.ignition` stage has been
added together with a new option in the `org.osbuild.grub2` stage,
called `ignition`. When used together, a new variable for the
kernel command line, called `$ignition_firstboot`, will exist that
will trigger the run of `ignition` on the first boot of an image.
* A new `org.osbuild.copy` stage was added that can be used to copy
files and directories from an archive to the file system tree. The
archive will be fetched via the existing `org.osbuild.files` source.
* The result of the assembler will now not automatically be committed
to the store anymore, but only when requested via `--checkpoint`;
very much like it is already the case for the stages.
* The `tree_id` and `output_id` identifiers have been dropped from the
osbuild result. This reflects the policy that the internals of the
store are private. The `--output-directory` command line option can
be used to obtain the final artifact instead.
* The `org.osbuild.files` and `org.osbuild.ostree` sources have been
properly documented and the JSON schema for their options was added.
osbuild gained support for the validation of the source options in
the manifest. As a result the whole manifest is now validated.
* The GPG signature verification of RPMs in the `org.osbuild.rpm` stage
is now optional and opt-in. The GPG key can now also be provided per
package.
* The `org.osbuild.ostree` gained support for pre-populating `/var`
like it is done by anaconda.
Also its `rootfs` option is not required anymore, since in specific
cases, like when ignition is being used, the root file system is
identified by its label only.
* The common term for Stages, Assemblers and Sources shall from now on
be "module". Rename the `StageInfo` class to `ModuleInfo`.
* Small bug fixes, including to the org.osbuild.users stage, that now
allows the creation of users with `uid`/`gid`s that are `0` and
descriptions and passwords that are empty. The `org.osbuild.files`
source got a bug fix to allow the use of URL format but without
specifying the `secrets` key.
* Numerous small fixes throughout the source code to fix all `pylint`
warnings. These are now also enabled for the source checks.
* Lots of improvements to the test infrastructure and the CI.
Contributions from: Christian Kellner, David Rheinsberg, Jacob Kozol,
Major Hayden, Tom Gundersen
— Berlin, 2020-06-04
## CHANGES WITH 15:
* A new assembler, `org.osbuild.oci-archive`, that will turn a tree
into an Open Container Initiative Image compliant archive. These
archives can be used to run containers via e.g. podman.
* Support for client side certificates to download content from the
Red Hat servers: the `org.osbuild.files` source got support for
reading entitlements and pass those certificates along when
fetching content, i.e. RPMs.
* A new ManifestPreProcessor (MPP) was added as a new tool located
in `tools/mpp-depsolve.py`. Currently, it can take an existing
manifest and dep-solve packages specified via a new `mpp-depsolve`
option in existing `org.osbuild.rpm` stages.
This is now used to generate Fedora 32 based test pipelines.
* The `org.osbuild.ostree.commit` assembler gained an option to produce
a tarball archive instead of emitting the plain OSTree repository.
* Schema validation is now done with the draft 4 validator, and works
therefore with pyhthon-jsonschema 2.6.
* The `tree_id` and `output_id` fields got dropped from the resulting
JSON when inspecting pipelines via `osbuild --inspect`.
* The `--build-env` option has been dropped from the command line
interface. It was deprecated and not used anymore.
* Tests have been converted to not rely on `tree_id` and `output_id`
anymore, as they are deprecated and will be removed in the future.
* Lots of other improvements to the test infrastructure and the CI.
* And finally for something meta: this file has been re-formatted to
be proper markdown.
Contributions from: Christian Kellner, David Rheinsberg, Jacob Kozol,
Major Hayden
— Berlin, 2020-05-20
## CHANGES WITH 14:
* Schema validation: The osbuild python library gained support for
retrieving the metadata of modules and schema validation. This is
being used on each invocation of osbuild in order to validate the
manifest. Should the validation fail the build is aborted and
validation errors are returned, either in human readable form or
in JSON, if `--json` was specified.
* A `--inspect` command line option was added for osbuild. Instead
of attempting to build the pipeline, the manifest will be printed
to stdout in JSON form, including all the calulcated identifiers
of stages, the assembler and the `tree_id` and `output_id` of the
pipeline (and build pipelines). Schema validation will be done and
errors will be reported.
* Internally, the buildroot class now uses `PYTHONPATH` to point to
the `osbuild` module instead of the symlinks or bind-mounts in the
individual modules.
* Fixes to the CI and many cleanups to the schemata, sample and test
pipelines as a result of the schema validation work.
Contributions from: Christian Kellner, David Rheinsberg, Ondřej Budai
— Berlin, 2020-05-06
## CHANGES WITH 13:
* Stage `org.osbuild.yum` has been dropped. It has been deprecated for
some time and `org.osbuild.rpm` provides a better alternative.
* XZ compression now utilizes all available CPU cores. This affects all
stages and assemblers that support XZ compression. It should decrease
compression times considerably.
* `org.osbuild.grub2` now supports referring to file-systems via a label
additionally to a UUID. This affects all places where an existing
file-system is referred to. Disk creation still requires a UUID to be
provided. `org.osbuild.fstab` gained similar support.
* RHEL-8.3 is now supported as host system.
* The 'libdir' layout in `/usr/lib/osbuild/` has been simplified.
Distributions are no longer required to create mount anchors during
installation. Instead, all modules (stages, assemblers, sources, and
runners) can be copied verbatim from the source tree.
* `org.osbuild.grub2` now correctly pads `grubenv` files to 1024 bytes.
This was not done correctly, previously, and caused other parsers to
fail.
* The containerization via systemd-nspawn was adjusted to support
running in a container. With sufficient privileges, you can now run
osbuild pipelines from within a container.
Contributions from: Christian Kellner, David Rheinsberg, Major Hayden
— Berlin, 2020-04-29
## CHANGES WITH 12:
* The `qemu` assembler now supports the `VHDX` image format. This is the
preferred format for AWS targets, so it is a natural fit for our
assemblers.
* The `grub2` stage now disables the legacy compatibility by default.
You have to explicitly enable it in the stage options if you require
it.
* Additionally, the `grub2` stage now also has a `uefi.install` option
to control whether it installs the UEFI configuration from the build
tree into the target tree. Furthermore, a new option called
`write_defaults` controls whether default options are written to
`/etc` (enabled by default).
* The `dnf` stage was removed. The `rpm` stage fully replaces all its
functionality.
* The `fedora27` runner is no longer supported. Fedora 30 is the minimum
required host version for Fedora systems.
* Add OSTree integration. This includes multiple stages and sources
which allow to export osbuild trees as ostree commits, or import
ostree commits into an osbuild pipeline:
* org.osbuild.rpm-ostree: This stage uses `rpm-ostree compose` to
post-process a tree and prepare it for
committing to ostree.
* org.osbuild.ostree.commit: A new assembler that takes a tree that
conforms to the ostree layout and
turns it into an ostree commit.
* org.osbuild.ostree: A new source that provides external ostree
commits to a pipeline.
* org.osbuild.ostree: A new stage that takes an ostree commit and
prepares the working directory with its
content.
* The `osbuild` binary now has an `--output-directory=DIR` argument
which allows to specify a directory where to put the output of the
pipeline assembler. This is optional for now, but will be made
mandatory in the future.
* A new stage called `org.osbuild.first-boot` allows to control the
execution of scripts at the first bootup of the generated images.
Contributions from: Christian Kellner, David Rheinsberg, Major Hayden,
Ondřej Budai, Tom Gundersen
— Berlin, 2020-04-15
## CHANGES WITH 11:
* Drop support for legacy input: passing in non-manifest style
pipelines is now not supported anymore.
* Support for specifying an UUID for partitions when using the GPT
partition layout was added to the org.osbuild.qemu assembler.
* Fix a crash in the case the assembler failed, which was caused by
cleanup up the object while the object was still being written to.
* Delay the cleanup of the build tree to after the error checking
since in the error case there is nothing to clean up and trying
to do so will lead to crash.
* `objectstore.Object` now directly cleans its working tree up, in
contrast to relying on the implicit cleanup of `TemporaryDirectory`.
One advantage of this is that the custom cleanup code can handle
immutable directories, which Python 3 fails to clean up.
* Drop custom `os-release` creation from the RHEL 8.2 runner. The
issue that made this neccessary got fixed upstream.
* Ensure the build tree is always being built even if there are no
stages specified.
* spec file: Do no generate dependencies for the internal files and
add NEWS.md to the documentation section.
* The Fedora 30 based aarch64 example was fixed and now builds again.
Contributions from: Christian Kellner, David Rheinsberg, Lars Karlitski,
Major Hayden, Martin Sehnoutka, Ondřej Budai
— Berlin, 2020-04-01
## CHANGES WITH 10:
* A new man-page `osbuild-manifest(5)` is available, which describes
the input format of the JSON manifest that `osbuild` expects.
* Man-pages can now be built via `make man`. This supports `SRCDIR` and
`BUILDDIR` variables to build out-of-tree.
* Temporary objects in the object-store are now created in
`.osbuild/tmp/`, rather than in the top-level directory. This should
help cleaning up temporary objects after a crash. If no osbuild
process is running, the `tmp/` subdirectory should not exist.
* The final stage of a build-pipeline is no longer automatically
committed. You must pass checkpoints via `--checkpoint` to commit
anything to the store.
* Improve curl timeout handling. This should improve osbuild behavior
with slow or bad mirrors and make sure operations are retried
correctly, or time-out if no progress is made.
Contributions from: Christian Kellner, David Rheinsberg, Lars Karlitski,
Major Hayden, Tom Gundersen
— Berlin, 2020-03-18
## CHANGES WITH 9:
* The last pipeline stage is no longer automatically committed to the
store. This used to be a special case to make things work, but it has
now been properly fixed.
From now on, if you want a stage committed to the store, you need to
pass a `--checkpoint` option for the stage.
* The runner for the host system is now auto-detected. The
`runners/org.osbuild.default` symlink is now longer required (nor
supported).
* A generic runner named `org.osbuild.linux` was added. This runner
uses the default value of `ID` in `/etc/os-release`. That is, if the
local OS cannot be detected, or if no `os-release` file is provided,
this is the fallback runner that is used.
This runner only performs the bare minimum of initialization. It is
enough to run the most basic stages on all systems we tested.
* On Archlinux, the generic runner will now be used.
* A new runner for RHEL-8.1 is available.
* The JSON input to `osbuild` is now a monolithic manifest format which
contains all build information. For now, this means the input
manifest can contain a `pipeline:` key with the pipeline definition,
as well as a `sources:` key with external source definitions
previously passed via `--sources`.
The old input format is still supported, but will be dropped in the
next release.
* The osbuild sources now come with a man-page `osbuild(1)`. Further
pages will follow in the future.
Contributions from: Christian Kellner, David Rheinsberg, Jacob Kozol,
Lars Karlitski, Major Hayden, Martin Sehnoutka, Tom
Gundersen
— Berlin, 2020-03-05
## CHANGES BEFORE 9:
* Initial implementation of 'osbuild'.
Contributions from: Brian C. Lane, Christian Kellner, David Rheinsberg,
Jacob Kozol, Lars Karlitski, Major Hayden, Martin
Sehnoutka, Ondřej Budai, Sehny, Tom Gundersen,
Tomas Tomecek, Will Woods