This change introduces the kernelinit dm-verity mode, allowing
initramfs-less dm-verity enforcement against the rootfs image.
For this, the change introduces a new variable with dm-verity
information. This variable will be picked up by shim
configurations in subsequent commits.
This will allow the shims to build the kernel command line
with dm-verity information based on the existing
kernel_parameters configuration knob and a new
kernel_verity_params configuration knob. The latter
specifically provides the relevant dm-verity information.
This new configuration knob avoids merging the verity
parameters into the kernel_params field. Avoiding this, no
cumbersome escape logic is required as we do not need to pass the
dm-mod.create="..." parameter directly in the kernel_parameters,
but only relevant dm-verity parameters in semi-structured manner
(see above). The only place where the final command line is
assembled is in the shims. Further, this is a line easy to comment
out for developers to disable dm-verity enforcement (or for CI
tasks).
This change produces the new kernelinit dm-verity parameters for
the NVIDIA runtime handlers, and modifies the format of how
these parameters are prepared for all handlers. With this, the
parameters are currently no longer provided to the
kernel_params configuration knob for any runtime handler.
This change alone should thus not be used as dm-verity
information will no longer be picked up by the shims.
systemd-analyze on the coco-dev handler shows that using the
kernelinit mode on a local machine, less time is spent in the
kernel phase, slightly speeding up pod start-up. On that machine,
the average of 172.5ms was reduced to 141ms (4 measurements, each
with a basic pod manifest), i.e., the kernel phase duration is
improved by about 18 percent.
Signed-off-by: Manuel Huber <manuelh@nvidia.com>
Add some new ignore items to avoid local builds that cause git to track a lot of files
Fixes: #5900
Signed-off-by: Binbin Zhang <binbin36520@gmail.com>
to cover a Red Hat (adjacent) rootfs with great cross-platform compatibility
and a workable release cadence. The previous CentOS & Fedora workflows are
simplified.
Also remove unnecessary `/usr/share` files as on Ubuntu and mark Alpine
as unuspported on ppc64le (due to musl, for a while already).
Fixes: #3340
Signed-off-by: Jakob Naucke <jakob.naucke@ibm.com>
When the guest is built using dracut and the agent uses glibc (esp.
ppc64le/s390x), libraries might be missing. In my case, it was
`libutil.so`, but more can be added easily. Add a script to configure
`install_items` for dracut w.r.t. `ldd` of the agent.
Fixes: #2384
Signed-off-by: Jakob Naucke <jakob.naucke@ibm.com>
move all osbuilder files into `tools` directory to be able
to merge this into kata-containers repo.
Signed-off-by: Salvador Fuentes <salvador.fuentes@intel.com>
