pvc-installer/buildiso.sh

99 lines
3.4 KiB
Bash
Executable File

#!/bin/bash
# Generate a PVC autoinstaller ISO
# This ISO makes a number of assumptions about the system and asks
# minimal questions in order to streamline the install process versus
# using a standard Debian intaller ISO. The end system is suitable
# for immediate bootstrapping with the PVC Ansible roles.
fail() {
echo $@
exit 1
}
which debootstrap &>/dev/null || fail "This script requires debootstrap."
which mksquashfs &>/dev/null || fail "This script requires squashfs."
which xorriso &>/dev/null || fail "This script requires xorriso."
liveisofile="$( pwd )/debian-live-buster-DI-rc1-amd64-standard.iso"
tempdir=$( mktemp -d )
prepare_iso() {
echo -n "Creating directories... "
mkdir ${tempdir}/rootfs/ ${tempdir}/installer/ || fail "Error creating temporary directories."
echo "done."
echo -n "Extracting Debian LiveISO files... "
iso_tempdir=$( mktemp -d )
sudo mount ${liveisofile} ${iso_tempdir} &>/dev/null || fail "Error mounting LiveISO file."
sudo rsync -au --exclude live/filesystem.squashfs ${iso_tempdir}/ ${tempdir}/installer/ || fail "Error extracting LiveISO files."
sudo umount ${iso_tempdir} &>/dev/null || fail "Error unmounting LiveISO file."
rmdir ${iso_tempdir} &>/dev/null
sudo cp -a grub.cfg ${tempdir}/installer/boot/grub/grub.cfg &>/dev/null
sudo cp -a menu.cfg ${tempdir}/installer/isolinux/menu.cfg &>/dev/null
echo "done."
}
prepare_rootfs() {
echo -n "Preparing Debian live installation via debootstrap... "
SQUASHFS_PKGLIST="mdadm,lvm2,parted,gdisk,debootstrap,grub-pc,linux-image-amd64,sipcalc"
test -d debootstrap/ || \
sudo /usr/sbin/debootstrap \
--include=${SQUASHFS_PKGLIST} \
buster \
debootstrap/ \
http://localhost:3142/ftp.ca.debian.org/debian &>/dev/null
sudo rsync -au debootstrap/ ${tempdir}/rootfs/
echo "done."
echo -n "Configuring Debian live installation... "
sudo cp install.sh ${tempdir}/rootfs/
sudo cp ${tempdir}/rootfs/lib/systemd/system/getty\@.service ${tempdir}/rootfs/etc/systemd/system/getty@tty1.service
sudo sed -i \
's|/sbin/agetty|/sbin/agetty --autologin root|g' \
${tempdir}/rootfs/etc/systemd/system/getty@tty1.service
sudo tee ${tempdir}/rootfs/etc/hostname <<<"pvc-node-installer" &>/dev/null
sudo tee -a ${tempdir}/rootfs/root/.bashrc <<<"/install.sh" &>/dev/null
sudo chroot ${tempdir}/rootfs/ /usr/bin/passwd -d root &>/dev/null
echo "done."
echo -n "Generating squashfs image of live installation... "
sudo nice mksquashfs ${tempdir}/rootfs/ ${tempdir}/installer/live/install.squashfs -e boot &>/dev/null
echo "done."
}
build_iso() {
pushd ${tempdir}/installer &>/dev/null
echo -n "Creating LiveCD ISO... "
xorriso -as mkisofs \
-isohybrid-mbr /usr/lib/ISOLINUX/isohdpfx.bin \
-c isolinux/boot.cat \
-b isolinux/isolinux.bin \
-no-emul-boot \
-boot-load-size 4 \
-boot-info-table \
-eltorito-alt-boot \
-e boot/grub/efi.img \
-no-emul-boot \
-isohybrid-gpt-basdat \
-o ../pvc-installer.iso \
. &>/dev/null
popd &>/dev/null
echo "done."
echo -n "Moving generated ISO to '$(pwd)/pvc-installer.iso'... "
mv ${tempdir}/pvc-installer.iso . &>/dev/null
echo "done."
}
prepare_iso
prepare_rootfs
build_iso
echo -n "Cleaning up... "
sudo rm -rf ${tempdir} &>/dev/null
echo "done."
echo
echo "PVC Live Installer ISO generation complete."