Blancco 7.15.1 upgrade: native kernel boot, BMC cloud licensing

- Switch to Blancco native kernel (vmlinuz-bde-linux) for hardware compat
- Config.img preferences with BMC connection (classic.eu-west-1.blancco.cloud)
- Disable wired LAN in preferences so WiFi takes default route to BMC
- WiFi SSID INTERNETACCESS configured in plaintext in config.img
- Slim GRUB EFI (1.3MB standalone with minimal modules)
- Fix Windows line endings in blancco-init.sh
- Add extra NIC drivers to switch_root initramfs
- SSH enabled in modified airootfs.sfs (root:blancco)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
cproudlock
2026-03-26 13:54:25 -04:00
parent 76165495ff
commit b7cd0974f1
2 changed files with 308 additions and 255 deletions

View File

@@ -1,162 +1,168 @@
#!/bin/sh
# Blancco PXE Loader - init script for custom initramfs
# Boot chain: iPXE -> GRUB EFI -> Ubuntu kernel + this initramfs -> switch_root to Blancco
#
# Blancco's own kernel freezes on Dell Precision towers during PXE boot.
# Workaround: boot Ubuntu kernel, download Blancco rootfs (squashfs), mount
# overlay filesystem, and switch_root into Blancco's userspace.
export PATH=/bin:/sbin
echo ""
echo "============================================"
echo " Blancco PXE loader"
echo "============================================"
echo ""
mount -t proc proc /proc
mount -t sysfs sysfs /sys
mount -t devtmpfs devtmpfs /dev 2>/dev/null
mkdir -p /tmp /run
echo "[1/4] Loading NIC drivers..."
for mod in /lib/modules/*.ko; do
insmod $mod 2>/dev/null
done
sleep 2
echo " Waiting for network interface..."
IFACE=""
COUNT=0
while [ $COUNT -lt 30 ]; do
for i in /sys/class/net/*; do
ifname="${i##*/}"
if [ "$ifname" != "lo" ] && [ -d "$i" ]; then
IFACE=$ifname
break 2
fi
done
COUNT=$((COUNT + 1))
sleep 1
echo -n "."
done
echo ""
if [ -z "$IFACE" ]; then
echo "ERROR: No network interface found!"
exec sh
fi
echo " Interface: $IFACE"
ip link set $IFACE up
sleep 2
SERVER=10.9.100.1
ifconfig $IFACE 10.9.100.250 netmask 255.255.255.0 up
sleep 1
echo " IP: 10.9.100.250"
echo "[2/4] Downloading Blancco rootfs (666MB)..."
wget -O /tmp/airootfs.sfs http://$SERVER/blancco/arch/x86_64/airootfs.sfs 2>&1
if [ ! -s /tmp/airootfs.sfs ]; then
echo "ERROR: Failed to download rootfs!"
exec sh
fi
echo " OK ($(wc -c < /tmp/airootfs.sfs) bytes)"
echo "[3/4] Mounting rootfs..."
mkdir -p /run/lower /run/upper /run/work /run/newroot
losetup /dev/loop0 /tmp/airootfs.sfs
mount -t squashfs -o ro /dev/loop0 /run/lower
if [ $? -ne 0 ]; then
echo "ERROR: squashfs mount failed!"
exec sh
fi
insmod /lib/modules/overlay.ko 2>/dev/null
mount -t tmpfs -o size=50% tmpfs /run/upper
mkdir -p /run/upper/upper /run/upper/work
mount -t overlay overlay -o lowerdir=/run/lower,upperdir=/run/upper/upper,workdir=/run/upper/work /run/newroot
if [ $? -ne 0 ]; then
echo "ERROR: overlay mount failed!"
exec sh
fi
echo "[4/5] Installing kernel modules (132MB)..."
wget -O /tmp/kmod.tar.gz http://$SERVER/blancco/kmod.tar.gz 2>&1
if [ -s /tmp/kmod.tar.gz ]; then
cd /run/newroot
gunzip -c /tmp/kmod.tar.gz | tar xf -
rm -f /tmp/kmod.tar.gz
cd /
echo " OK"
else
echo " WARNING: Failed to download kernel modules"
fi
echo "[5/6] Switching root to Blancco..."
mkdir -p /run/newroot/run /run/newroot/proc /run/newroot/sys /run/newroot/dev /run/newroot/tmp
echo "[6/6] Downloading Blancco config..."
wget -O /run/newroot/albus/config.xml http://$SERVER/blancco/config-clean.xml 2>&1
wget -O /run/newroot/albus/preferences.xml http://$SERVER/blancco/preferences.xml 2>&1
if [ -s /run/newroot/albus/config.xml ]; then
echo " config.xml: $(wc -c < /run/newroot/albus/config.xml) bytes"
else
echo " WARNING: Failed to download config.xml"
fi
if [ -s /run/newroot/albus/preferences.xml ]; then
cp -f /run/newroot/albus/preferences.xml /run/newroot/albus/preferences.save
echo " preferences.xml: $(wc -c < /run/newroot/albus/preferences.xml) bytes"
else
echo " WARNING: Failed to download preferences.xml"
fi
# Pre-configure X.org to use modesetting driver (generic KMS, works with all GPUs)
mkdir -p /run/newroot/etc/X11/xorg.conf.d
echo " X.org: forcing modesetting driver"
cat > /run/newroot/etc/X11/xorg.conf.d/20-failsafeDriver.conf << 'XEOF'
Section "Device"
Identifier "Failsafe Video Device"
Driver "modesetting"
EndSection
XEOF
# Enable SSH for remote debugging
echo " Enabling SSH (root:blancco)..."
sed -i 's/^#*PermitRootLogin.*/PermitRootLogin yes/' /run/newroot/etc/ssh/sshd_config 2>/dev/null
cat > /run/newroot/etc/rc.local << 'RCEOF'
#!/bin/bash
echo 'root:blancco' | chpasswd
ssh-keygen -A 2>/dev/null
IFACE=$(ls /sys/class/net/ | grep -v lo | head -1)
ip addr add 10.9.100.250/24 dev "$IFACE" 2>/dev/null
/usr/bin/sshd
RCEOF
chmod +x /run/newroot/etc/rc.local
ln -sf /usr/lib/systemd/system/rc-local.service /run/newroot/etc/systemd/system/multi-user.target.wants/rc-local.service 2>/dev/null
cat > /run/newroot/etc/systemd/system/pxe-debug.service << 'SVCEOF'
[Unit]
Description=PXE Debug SSH
After=systemd-networkd.service
Wants=systemd-networkd.service
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/etc/rc.local
[Install]
WantedBy=multi-user.target
SVCEOF
ln -sf /etc/systemd/system/pxe-debug.service /run/newroot/etc/systemd/system/multi-user.target.wants/pxe-debug.service
mount --move /proc /run/newroot/proc
mount --move /sys /run/newroot/sys
mount --move /dev /run/newroot/dev
echo " Starting Blancco..."
exec switch_root /run/newroot /sbin/init
#!/bin/sh
# Blancco PXE Loader - init script for custom initramfs
# Boot chain: iPXE -> GRUB EFI -> Ubuntu kernel + this initramfs -> switch_root to Blancco
#
# Blancco's own kernel freezes on Dell Precision towers during PXE boot.
# Workaround: boot Ubuntu kernel, download Blancco rootfs (squashfs), mount
# overlay filesystem, and switch_root into Blancco's userspace.
export PATH=/bin:/sbin
echo ""
echo "============================================"
echo " Blancco PXE loader"
echo "============================================"
echo ""
mount -t proc proc /proc
mount -t sysfs sysfs /sys
mount -t devtmpfs devtmpfs /dev 2>/dev/null
mkdir -p /tmp /run
echo "[1/4] Loading NIC drivers..."
for mod in /lib/modules/*.ko; do
echo " insmod $(basename $mod)"
insmod $mod 2>/dev/null || true
done
sleep 5
echo " Interfaces after driver load:"
ls /sys/class/net/ 2>/dev/null
echo " Waiting for network interface..."
IFACE=""
COUNT=0
while [ $COUNT -lt 60 ]; do
for i in /sys/class/net/*; do
ifname="${i##*/}"
if [ "$ifname" != "lo" ] && [ -d "$i" ]; then
IFACE=$ifname
break 2
fi
done
COUNT=$((COUNT + 1))
sleep 1
echo -n "."
done
echo ""
if [ -z "$IFACE" ]; then
echo "ERROR: No network interface found!"
echo "Available interfaces:"
ls /sys/class/net/ 2>/dev/null
exec sh
fi
echo " Interface: $IFACE"
ip link set $IFACE up
sleep 2
SERVER=10.9.100.1
ifconfig $IFACE 10.9.100.250 netmask 255.255.255.0 up
sleep 1
echo " IP: 10.9.100.250"
echo "[2/4] Downloading Blancco rootfs (666MB)..."
wget -O /tmp/airootfs.sfs http://$SERVER/blancco/arch/x86_64/airootfs.sfs 2>&1
if [ ! -s /tmp/airootfs.sfs ]; then
echo "ERROR: Failed to download rootfs!"
exec sh
fi
echo " OK ($(wc -c < /tmp/airootfs.sfs) bytes)"
echo "[3/4] Mounting rootfs..."
mkdir -p /run/lower /run/upper /run/work /run/newroot
losetup /dev/loop0 /tmp/airootfs.sfs
mount -t squashfs -o ro /dev/loop0 /run/lower
if [ $? -ne 0 ]; then
echo "ERROR: squashfs mount failed!"
exec sh
fi
insmod /lib/modules/overlay.ko 2>/dev/null
mount -t tmpfs -o size=50% tmpfs /run/upper
mkdir -p /run/upper/upper /run/upper/work
mount -t overlay overlay -o lowerdir=/run/lower,upperdir=/run/upper/upper,workdir=/run/upper/work /run/newroot
if [ $? -ne 0 ]; then
echo "ERROR: overlay mount failed!"
exec sh
fi
echo "[4/5] Installing kernel modules (132MB)..."
wget -O /tmp/kmod.tar.gz http://$SERVER/blancco/kmod.tar.gz 2>&1
if [ -s /tmp/kmod.tar.gz ]; then
cd /run/newroot
gunzip -c /tmp/kmod.tar.gz | tar xf -
rm -f /tmp/kmod.tar.gz
cd /
echo " OK"
else
echo " WARNING: Failed to download kernel modules"
fi
echo "[5/6] Switching root to Blancco..."
mkdir -p /run/newroot/run /run/newroot/proc /run/newroot/sys /run/newroot/dev /run/newroot/tmp
echo "[6/6] Downloading Blancco config..."
wget -O /run/newroot/albus/config.xml http://$SERVER/blancco/config-clean.xml 2>&1
wget -O /run/newroot/albus/preferences.xml http://$SERVER/blancco/preferences.xml 2>&1
if [ -s /run/newroot/albus/config.xml ]; then
echo " config.xml: $(wc -c < /run/newroot/albus/config.xml) bytes"
else
echo " WARNING: Failed to download config.xml"
fi
if [ -s /run/newroot/albus/preferences.xml ]; then
cp -f /run/newroot/albus/preferences.xml /run/newroot/albus/preferences.save
echo " preferences.xml: $(wc -c < /run/newroot/albus/preferences.xml) bytes"
else
echo " WARNING: Failed to download preferences.xml"
fi
# Pre-configure X.org to use modesetting driver (generic KMS, works with all GPUs)
mkdir -p /run/newroot/etc/X11/xorg.conf.d
echo " X.org: forcing modesetting driver"
cat > /run/newroot/etc/X11/xorg.conf.d/20-failsafeDriver.conf << 'XEOF'
Section "Device"
Identifier "Failsafe Video Device"
Driver "modesetting"
EndSection
XEOF
# Enable SSH for remote debugging
echo " Enabling SSH (root:blancco)..."
if [ -f /run/newroot/etc/ssh/sshd_config ]; then
sed 's/^#*PermitRootLogin.*/PermitRootLogin yes/' /run/newroot/etc/ssh/sshd_config > /run/newroot/etc/ssh/sshd_config.new || true
mv /run/newroot/etc/ssh/sshd_config.new /run/newroot/etc/ssh/sshd_config || true
fi
cat > /run/newroot/etc/rc.local << 'RCEOF'
#!/bin/bash
echo 'root:blancco' | chpasswd
ssh-keygen -A 2>/dev/null
/usr/bin/sshd 2>/dev/null
RCEOF
chmod +x /run/newroot/etc/rc.local
cat > /run/newroot/etc/systemd/system/pxe-debug.service << 'SVCEOF'
[Unit]
Description=PXE Debug SSH
After=network.target
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/etc/rc.local
[Install]
WantedBy=multi-user.target
SVCEOF
ln -sf /etc/systemd/system/pxe-debug.service /run/newroot/etc/systemd/system/multi-user.target.wants/pxe-debug.service 2>/dev/null
mount --move /proc /run/newroot/proc
mount --move /sys /run/newroot/sys
mount --move /dev /run/newroot/dev
echo " Starting Blancco..."
exec switch_root /run/newroot /sbin/init