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#!/bin/bash
#
# This is an example script that install and configure EXTLINUX boot loader
# after installation. Requires extlinux (package) to be available on nodes.
# Tested on Debian 10.
#
# To use it put it in your CUSTOMIZE_DIR and make it executable.
#
set -e
. common.sh
CLEANUP=( )
trap cleanup EXIT
ELINSTALLER="/usr/bin/extlinux"
MBRFILE="/usr/lib/EXTLINUX/mbr.bin"
if [ -z "$TARGET" -o ! -d "$TARGET" ]; then
echo "Missing target directory"
exit 1
fi
if [ "$PARTITION_STYLE" = 'msdos' ]; then
if [ ! -e "$ELINSTALLER" ]; then
echo "Missing extlinux installer on $(/usr/bin/hostname)"
exit 1
fi
if [ ! -e "$MBRFILE" ]; then
echo "Missing extlinux MBR file on $(/usr/bin/hostname)"
exit 1
fi
# extlinux install
cat << EOF > "$TARGET/boot/extlinux.conf"
PROMPT 1
TIMEOUT 10
DEFAULT Linux
LABEL Linux
LINUX /vmlinuz
APPEND root=/dev/vda1 ro
INITRD /initrd.img
LABEL Linux_old
LINUX /vmlinuz.old
APPEND root=/dev/vda1 ro
INITRD /initrd.img.old
EOF
"$ELINSTALLER" -i "$TARGET/boot/"
# install extlinux MBR on boot device
cat "$MBRFILE" > "$DISK_0_PATH"
fi
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