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Copy pathbuild_pxe_env.sh
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executable file
·112 lines (92 loc) · 2.39 KB
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#!/bin/bash -e
# build_pxe_env.sh - Create a PXE boot environment
#
# build_pxe_env.sh destdir
#
# Requires Ubuntu Oneiric
#
# Only needs to run as root if the destdir permissions require it
dpkg -l syslinux || apt-get install -y syslinux
DEST_DIR=${1:-/tmp}/tftpboot
PXEDIR=${PXEDIR:-/var/cache/devstack/pxe}
OPWD=`pwd`
PROGDIR=`dirname $0`
# Clean up any resources that may be in use
cleanup() {
set +o errexit
# Mop up temporary files
if [ -n "$MNTDIR" -a -d "$MNTDIR" ]; then
umount $MNTDIR
rmdir $MNTDIR
fi
# Kill ourselves to signal any calling process
trap 2; kill -2 $$
}
trap cleanup SIGHUP SIGINT SIGTERM
mkdir -p $DEST_DIR/pxelinux.cfg
cd $DEST_DIR
for i in memdisk menu.c32 pxelinux.0; do
cp -pu /usr/lib/syslinux/$i $DEST_DIR
done
CFG=$DEST_DIR/pxelinux.cfg/default
cat >$CFG <<EOF
default menu.c32
prompt 0
timeout 0
MENU TITLE PXE Boot Menu
EOF
# Setup devstack boot
mkdir -p $DEST_DIR/ubuntu
if [ ! -d $PXEDIR ]; then
mkdir -p $PXEDIR
fi
# Get image into place
if [ ! -r $PXEDIR/stack-initrd.img ]; then
cd $OPWD
$PROGDIR/build_ramdisk.sh $PXEDIR/stack-initrd.img
fi
if [ ! -r $PXEDIR/stack-initrd.gz ]; then
gzip -1 -c $PXEDIR/stack-initrd.img >$PXEDIR/stack-initrd.gz
fi
cp -pu $PXEDIR/stack-initrd.gz $DEST_DIR/ubuntu
if [ ! -r $PXEDIR/vmlinuz-*-generic ]; then
MNTDIR=`mktemp -d --tmpdir mntXXXXXXXX`
mount -t ext4 -o loop $PXEDIR/stack-initrd.img $MNTDIR
if [ ! -r $MNTDIR/boot/vmlinuz-*-generic ]; then
echo "No kernel found"
umount $MNTDIR
rmdir $MNTDIR
exit 1
else
cp -pu $MNTDIR/boot/vmlinuz-*-generic $PXEDIR
fi
umount $MNTDIR
rmdir $MNTDIR
fi
# Get generic kernel version
KNAME=`basename $PXEDIR/vmlinuz-*-generic`
KVER=${KNAME#vmlinuz-}
cp -pu $PXEDIR/vmlinuz-$KVER $DEST_DIR/ubuntu
cat >>$CFG <<EOF
LABEL devstack
MENU LABEL ^devstack
MENU DEFAULT
KERNEL ubuntu/vmlinuz-$KVER
APPEND initrd=ubuntu/stack-initrd.gz ramdisk_size=2109600 root=/dev/ram0
EOF
# Get Ubuntu
if [ -d $PXEDIR -a -r $PXEDIR/natty-base-initrd.gz ]; then
cp -pu $PXEDIR/natty-base-initrd.gz $DEST_DIR/ubuntu
cat >>$CFG <<EOF
LABEL ubuntu
MENU LABEL ^Ubuntu Natty
KERNEL ubuntu/vmlinuz-$KVER
APPEND initrd=ubuntu/natty-base-initrd.gz ramdisk_size=419600 root=/dev/ram0
EOF
fi
# Local disk boot
cat >>$CFG <<EOF
LABEL local
MENU LABEL ^Local disk
LOCALBOOT 0
EOF