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[release-4.21] USHIFT-6441: Pin OS version when installing kernel-devel package #6047

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Merged
openshift-merge-bot merged 2 commits into from
Jan 9, 2026
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[release-4.21] USHIFT-6441: Pin OS version when installing kernel-devel package #6047

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40b949d
Pin OS version when installing kernel-devel package
ggiguash Jan 8, 2026
c604a4d
Enable RHEL EUS repositories for kernel-devel version match
ggiguash Jan 8, 2026
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38 changes: 28 additions & 10 deletions test/image-blueprints-bootc/layer1-base/group2/build-serialsim.sh.template
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Original file line number Diff line number Diff line change
@@ -1,29 +1,47 @@
#!/bin/bash
set -euo pipefail
set -x

function get_kernel_ver() {
KERNEL_VER=$(rpm -q --qf "%{VERSION}-%{RELEASE}\n" kernel | sort | tail -1)
KERNEL_VER="$(rpm -q --qf "%{VERSION}-%{RELEASE}\n" kernel | sort | tail -1)"
KERNEL_VER_ARCH="${KERNEL_VER}.$(uname -m)"

export KERNEL_VER
export KERNEL_VER_ARCH
}

# Upgrade the kernel only if necessary to align the procedure with both RHEL and CentOS.
#
# On CentOS, a kernel upgrade may be required due to its different package
# retention policy, which can cause the kernel in the base bootc image to be
# unavailable in the repositories.
# Set the current kernel version and architecture variables.
get_kernel_ver
if ! dnf --quiet list available "kernel-devel-${KERNEL_VER}" >/dev/null 2>&1; then
dnf install -y kernel-devel-matched
get_kernel_ver
else

# Lock the OS release version to prevent the installation of a newer kernel package
# belonging to a newer OS release.
source /etc/os-release
echo "${VERSION_ID}" > /etc/dnf/vars/releasever

if [[ "${ID}" == "rhel" ]] ; then
# On RHEL, enable RHEL EUS repositories to allow the installation of the
# kernel-devel package for the current kernel version.
VERSION_ID_MAJOR="$(awk -F. '{print $1}' <<< "${VERSION_ID}")"
VERSION_ID_MINOR="$(awk -F. '{print $2}' <<< "${VERSION_ID}")"
if (( "${VERSION_ID_MINOR}" % 2 == 0 )) ; then
dnf config-manager --set-enabled \
"rhel-${VERSION_ID_MAJOR}-for-$(uname -m)-baseos-eus-rpms" \
"rhel-${VERSION_ID_MAJOR}-for-$(uname -m)-appstream-eus-rpms"
fi
dnf install -y "kernel-devel-${KERNEL_VER}"
else
# On CentOS, attempt to install the kernel-devel package for the current kernel
# version, falling back to kernel-devel-matched if the former is not available.
dnf install -y "kernel-devel-${KERNEL_VER}" || dnf install -y kernel-devel-matched
fi

# Reset the current kernel version and architecture variables.
get_kernel_ver

# Install the necessary dependencies and clean up.
dnf install -y git make python3-pyserial
dnf clean all
rm -f /etc/dnf/vars/releasever

# Clone the serialsim repository and build the serialsim module.
git clone https://github.com/microshift-io/serialsim.git /tmp/serialsim
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