170 lines
5.2 KiB
Bash
Executable File
170 lines
5.2 KiB
Bash
Executable File
#!/bin/sh
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# This script generates Debian images for OpenNebula.
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#
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# Test image locally (without network) with:
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# qemu-system-x86_64 -enable-kvm -m 1G -drive file=$IMAGE,format=qcow2
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set -e
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set -x
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# XXX: Handle command-line arguments?
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IMAGE_PATH=arch-$(date --iso-8601).img.qcow2
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IMAGE_SIZE=10G
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NBD_DEVICE=/dev/nbd0
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ONE_CONTEXT_VERSION=6.8.1
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ONE_CONTEXT_SOURCE_ARCHIVE="https://github.com/OpenNebula/one-apps/archive/refs/tags/v${ONE_CONTEXT_VERSION:?}.tar.gz"
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cleanup() {
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# The order here is important.
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umount /mnt/dev/pts 2>/dev/null || true
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umount /mnt/dev/shm 2>/dev/null || true
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umount /mnt/dev 2>/dev/null || true
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umount /mnt/proc 2>/dev/null || true
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umount /mnt/run 2>/dev/null || true
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umount /mnt/sys 2>/dev/null || true
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umount /mnt/boot 2>/dev/null || true
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umount /mnt 2>/dev/null || true
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qemu-nbd --disconnect "$NBD_DEVICE" || true
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}
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run_root() {
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chroot /mnt /usr/bin/env \
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PATH=/sbin:/usr/sbin:/bin:/usr/bin \
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sh -c "$*"
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}
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if [ "$(whoami)" != 'root' ]; then
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echo "This script must be run as root." >&2
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exit 1
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fi
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if [ "$(lsb_release --short --id)" != "Arch" ]; then
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echo "WARNING: this script has been designed to run on Arch Linux." >&2
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echo "WARNING: Not running Arch. Giving you 5 seconds to abort." >&2
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sleep 5
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fi
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# Create base QCOW2 image.
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qemu-img create -f qcow2 "$IMAGE_PATH" "$IMAGE_SIZE"
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modprobe nbd max_part=16
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qemu-nbd --connect="$NBD_DEVICE" "$IMAGE_PATH"
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# Wait for qemu-nbd to settle.
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sleep 1
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# Don't forget to cleanup, even if the script crash.
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trap cleanup EXIT
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# Create partition table, format partitions.
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sfdisk --no-reread "$NBD_DEVICE" <<EOF
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1M,500M,L,*
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,,L
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EOF
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mkfs.ext4 "${NBD_DEVICE}p1"
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mkfs.ext4 "${NBD_DEVICE}p2"
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# Mount partitions, install base OS.
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mount "${NBD_DEVICE}p2" /mnt
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mkdir /mnt/boot
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mount "${NBD_DEVICE}p1" /mnt/boot
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# Install base system.
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pacstrap /mnt base base-devel openssh
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mount --bind /dev /mnt/dev
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mount --bind /dev/pts /mnt/dev/pts
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mount --bind /dev/shm /mnt/dev/shm
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mount --bind /proc /mnt/proc
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mount --bind /run /mnt/run
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mount --bind /sys /mnt/sys
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# Required to resolve package mirror in chroot.
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cp /etc/resolv.conf /mnt/etc/resolv.conf
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# Initialize /etc/hosts.
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cat > /mnt/etc/hosts << EOF
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127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
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::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
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EOF
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# Configure package sources and update package index.
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cat > /mnt/etc/pacman.d/mirrorlist << EOF
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##
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## Arch Linux repository mirrorlist
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## Generated on 2024-03-07
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##
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## Switzerland
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Server = http://pkg.adfinis.com/archlinux/\$repo/os/\$arch
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Server = https://pkg.adfinis.com/archlinux/\$repo/os/\$arch
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Server = http://mirror.init7.net/archlinux/\$repo/os/\$arch
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Server = https://mirror.init7.net/archlinux/\$repo/os/\$arch
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Server = http://mirror.metanet.ch/archlinux/\$repo/os/\$arch
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Server = https://mirror.metanet.ch/archlinux/\$repo/os/\$arch
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Server = http://mirror.puzzle.ch/archlinux/\$repo/os/\$arch
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Server = https://mirror.puzzle.ch/archlinux/\$repo/os/\$arch
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Server = https://mirror.ungleich.ch/mirror/packages/archlinux/\$repo/os/\$arch
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EOF
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run_root pacman -Syu --noconfirm
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# Initalize base services.
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run_root systemd-machine-id-setup
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# Generate fstab file.
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boot_uuid=$(blkid --match-tag UUID --output value "${NBD_DEVICE}p1")
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root_uuid=$(blkid --match-tag UUID --output value "${NBD_DEVICE}p2")
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cat >>/mnt/etc/fstab <<EOF
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UUID=${boot_uuid:?} /boot ext4 rw,relatime,data=ordered 0 2
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UUID=${root_uuid:?} / ext4 rw,relatime,data=ordered 0 1
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EOF
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# Guest networking is to be handled by the one-context package.
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# See https://github.com/OpenNebula/one-apps for details.
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run_root pacman -Sy curl tar rsync --noconfirm
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run_root curl -L "$ONE_CONTEXT_SOURCE_ARCHIVE" -o one-context.tar.gz
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run_root tar xf one-context.tar.gz
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run_root rsync -ravh "one-apps-${ONE_CONTEXT_VERSION:?}/context-linux/src/"* /
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run_root rm -r "one-apps-${ONE_CONTEXT_VERSION:?}"
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run_root cp -r /usr/lib/systemd/system/one-context.service##arch.one /usr/lib/systemd/system/one-context.service
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run_root systemctl enable one-context.service
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run_root ln -sf /usr/share/zoneinfo/UTC /etc/localtime
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run_root systemctl enable systemd-timesyncd.service
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# Install kernel and generate initramfs.
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run_root ln -s /usr/lib/modules /lib/modules
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run_root pacman -Sy mkinitcpio linux linux-firmware --noconfirm
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sed -i '/MODULES=/c\MODULES=(virtio virtio_blk virtio_pci virtio_net)' /mnt/etc/mkinitcpio.conf
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run_root mkinitcpio -p linux
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# Install and configure bootloader.
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run_root pacman -Sy grub --noconfirm
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run_root grub-install --target=i386-pc "${NBD_DEVICE}"
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run_root grub-mkconfig -o /boot/grub/grub.cfg
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# Install and configure a SSH daemon.
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run_root pacman -Sy openssh netctl --noconfirm
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run_root systemctl enable sshd
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# Install haveged due to lack of entropy in ONE environment.
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run_root pacman -Sy haveged --noconfirm
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run_root systemctl enable haveged.service
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# Make sure core services are enabled.
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run_root systemctl enable systemd-networkd
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run_root systemctl enable systemd-resolved
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run_root systemctl enable systemd-timesyncd
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# Reset systemd's environment.
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run_root rm -f /etc/machine-id
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run_root touch /etc/machine-id
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rm -f /var/lib/systemd/random-seed
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echo "arch" > /mnt/etc/hostname
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# Make sure everything is written to disk before exiting.
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sync
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