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Instead of building the initrds for the mkosi images with dracut,
let's switch to using mkosi presets to build the initrd with mkosi
as well.
This commit splits up our single image build into three separate
mkosi presets:
1. The "base" preset. This image contains systemd and all its runtime
dependencies. The sole purpose of this image is to serve as a base image
for the initrd and the final image. It's also responsible for building
systemd from source with the build script. The results are installed into
the base image. Note that we install the systemd and udev packages into this
image as well to prevent package managers from overriding the systemd we built
from source with the distro packaged systemd if it's pulled in as a dependency
by another package from the initrd or final profiles.
2. The "initrd" preset. This image provides the initrd. It's trivial and does
nothing more than packaging the base image up as a zstd compressed initramfs and
adds /init and /etc/initrd-release symlinks to the image.
3. The "final" preset. This image builds on top of the base image and adds
a kernel and extra packages that are useful for testing and debugging.
We also split out the optional kernel build into a separate set of config files
that are only included if a kernel to build is actually provided.
Note that this commit doesn't really change anything about how mkosi is used.
The commands remain the same, except that mkosi will now build all the presets
in order. "mkosi summary" will show the summary of all the presets. "mkosi qemu,
boot, shell" will always boot the final preset. With "-f", all presets will be
built and the final one is booted. "-i" makes a cache of each preset.
The only thing to keep in mind is that specifying config via the mkosi CLI will
apply to each of the presets. e.g. any extra packages added with "-p" will be
installed in both the initrd and the final image. To apply local configuration
to a single preset, create a file 00-local.conf in
mkosi.presets/<profile>/mkosi.conf.d and put all the preset specific configuration
in there.
Let's use the new support for matching against any distribution in
a list of distributions to start sharing most things between the
ubuntu/debian configs and centos/fedora configs.
This also migrates the configuration to the new format that was
just merged in mkosi. Specifically, we make use of the new [Match]
sections to only include specific config snippets per distro.
- Drop Netdev= as it was removed in mkosi
- Always install python-psutil in the final image (required for networkd tests)
- Always Install python-pytest in the final image (required for ukify tests)
- Use the narrow glob for all centos python packages
- Drop the networkd mkosi config files (the default image can be used instead)
- Use ".conf" as the mkosi config file suffix everywhere
- Copy src/ to /root/src in the final image and set gdb substitute path in
.gdbinit to make gdb work properly
- ACLs are not set on generated directories anymore by default, so
we enable them explictly now so that when running unprivileged mkosi,
the user running mkosi can remove all generated files and directories.
- We don't explicitly set QemuHeadless= anymore as the option was removed
and made the default.
- We set the loglevel= kernel cmdline argument explicitly now as mkosi
doesn't set it by default anymore.
"Failed to dissect image: connection timed out" messages have been
appearing sporadically in mkosi CI. Let's enable debug logging to
help figure out why.
Let's make sure we're testing unprivileged builds properly. Usage
of SourceFileTransfer= and SourceFileTransferFinal= are removed as
they were dropped by mkosi. SourceFileTransfer=mount is now the
default in mkosi so behavior for the build script is unchanged. We
stop copying sources in the final image until mkosi adds support
for virtiofs.
This gives us some nice test coverage for secure boot enrolling and the
stub secure boot workound. The authenticated EFI variables are already
created by mkosi, all we need to do is request secure boot to be used.
It's still useful to test the EFI handover logic in systemd-boot.
We use a mkosi.prepare script to install a newer python and update
the system to use it.
We also add the necessary deps for ukify to the mkosi configs.
CentOS Stream 8 is dropped from CI because its python version is too
old (3.6) to be able to run ukify.
Let's make sure we're testing with the latest changes in mkosi. This
includes both the switch to systemd-repart and ukify, making sure we
get extra testing coverage for those components.
This also drops options from the centos config that have been removed
in the newer mkosi.
For some reason idmapping runs into some issues so we disable it for
now.
https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#example-including-and-excluding-paths
> If you define a path with the ! character, you must also define at least one
> path without the ! character. If you only want to exclude paths, use
> paths-ignore instead.
>
> The order that you define patterns matters:
> A matching negative pattern (prefixed with !) after a positive match will
> exclude the path.
> A matching positive pattern after a negative match will include the path
> again.
Even if some of the exluded paths *could* impact the build, generally it's a
waste of time to do mkosi builds on them. Let's skip to releave the builders a
bit.
It's still failing in Ubuntu:
● isc-dhcp-server.service loaded failed failed ISC DHCP IPv4 server
● isc-dhcp-server6.service loaded failed failed ISC DHCP IPv6 server
Just disable them via the kernel command line masking.
Explicitly enable all features/components in the mkosi build to
ensure they all get built and we get an error if they can't be built.
We also rework the packages sections of all mkosi configs to reduce
duplication and cover all the dependencies necessary to build/use all
systemd features.
Note that for the final image, since systemd is installed by default
in base images, we rely on that to install the base library dependencies
and we only list extra optional dependencies and tools that aren't already
installed by default into the base image.
We also drop the centos stream 8 mkosi build as dependencies on that
distro are too out-of-date to be able to build all systemd features.
Since centos stream 9 has been out for a while, let's focus on that
and leave it to downstream to keep systemd building on centos stream 8.
Finally, there's a few additions to the mkosi scripts to make sure
services don't start by default on boot.
With this update, Arch Linux keyring updates will be automatically
pulled in instead of having to update to a new mkosi commit every
time the keyring gets outdated.
