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