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fix(hp-nodes): skip userdata reboot in kernel mode — fix EKS join failure #56

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Merged
JLCode-tech merged 1 commit into from
May 1, 2026
Merged

fix(hp-nodes): skip userdata reboot in kernel mode — fix EKS join failure #56

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11 changes: 10 additions & 1 deletion infra/aws/high-performance-nodes/scripts/compact_userdata.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -57,13 +57,22 @@ if ! is_checkpoint_complete "kernel_params"; then
fi
if grep -q "hugepagesz=2M" /proc/cmdline; then
NEEDS_REBOOT=false
else
elif [ "$TMM_DATA_PLANE_MODE" = "sriov" ]; then
NEEDS_REBOOT=true
mkdir -p /etc/default/grub.d
echo "GRUB_CMDLINE_LINUX=\"$${GRUB_CMDLINE_LINUX:-} $KP\"" > /etc/default/grub.d/99-dpdk-hugepages.cfg
cp /etc/default/grub /etc/default/grub.backup
grep -q "hugepagesz=2M" /etc/default/grub || sed -i "s/biosdevname=0/& $KP/g" /etc/default/grub
grub2-mkconfig -o /boot/grub2/grub.cfg
else
# Kernel mode: skip grub mutation. The 60s-delayed reboot below races with the EKS
# bootstrap script and interrupts kubelet's first registration. Hugepages are
# allocated at runtime via sysfs (below) and persisted across future operator-triggered
# reboots by the systemd-enabled dpdk-hugepages.service. isolcpus/nohz_full/rcu_nocbs
# would require a reboot to take effect but they are TMM jitter optimizations only —
# TMM still works via cpuset pinning in the pod spec.
NEEDS_REBOOT=false
log "kernel mode: skipping grub mutation, no reboot will be scheduled"
fi
echo $HUGEPAGES_2MI > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages 2>/dev/null || true
echo $HUGEPAGES_1GI > /sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages 2>/dev/null || true
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