#!/bin/sh # This script generates Ubuntu images for OpenNebula. # # Test image locally (without network) with: # qemu-system-x86_64 -enable-kvm -m 1G -drive file=$IMAGE,format=qcow2 set -e set -x # XXX: Handle command-line arguments? RELEASE=eoan # 19.10 ARCH=amd64 IMAGE_PATH=ubuntu-$RELEASE-$(date --iso-8601).img.qcow2 IMAGE_SIZE=10G NBD_DEVICE=/dev/nbd0 # TODO: find the package definition and built ourself, publish in some RPM repository. ONE_CONTEXT_DEB_URL="https://github.com/OpenNebula/addon-context-linux/releases/download/v5.10.0/one-context_5.10.0-1.deb" ONE_CONTEXT_DEB_PATH=/root/one-context.deb cleanup() { # The order here is important. umount /mnt/dev/pts 2>/dev/null || true umount /mnt/dev/shm 2>/dev/null || true umount /mnt/dev 2>/dev/null || true umount /mnt/proc 2>/dev/null || true umount /mnt/run 2>/dev/null || true umount /mnt/sys 2>/dev/null || true umount /mnt/boot 2>/dev/null || true umount /mnt 2>/dev/null || true qemu-nbd --disconnect "$NBD_DEVICE" || true } run_root() { chroot /mnt /usr/bin/env \ PATH=/sbin:/usr/sbin:/bin:/usr/bin \ sh -c "$*" } if [ "$(whoami)" != 'root' ]; then echo "This script must be run as root." >&2 exit 1 fi if [ $(lsb_release --short --id) != "Ubuntu" ]; then echo "WARNING: this script has been designed to run on an Ubuntu system." >&2 echo "WARNING: Not running Ubuntu. Giving you 5 seconds to abort." >&2 sleep 5 fi # Create base QCOW2 image. qemu-img create -f qcow2 "$IMAGE_PATH" "$IMAGE_SIZE" modprobe nbd max_part=16 qemu-nbd --connect="$NBD_DEVICE" "$IMAGE_PATH" # Wait for qemu-nbd to settle. sleep 1 # Don't forget to cleanup, even if the script crash. trap cleanup EXIT # Create partition table, format partitions. sfdisk --no-reread "$NBD_DEVICE" < /mnt/etc/hosts << EOF 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 EOF # Configure package sources and update package index. cat >/mnt/etc/apt/sources.list < "/mnt$ONE_CONTEXT_DEB_PATH" run_root apt-get -y install "$ONE_CONTEXT_DEB_PATH" run_root rm "$ONE_CONTEXT_DEB_PATH" # Manually install legacy network scripts used by one-context. run_root apt-get -y install ifupdown # Initalize base services. run_root systemd-machine-id-setup run_root ln -sf /usr/share/zoneinfo/UTC /etc/localtime run_root systemctl enable systemd-timesyncd.service # Install kernel and bootloader. Do not autoconfigure grub. run_root echo "grub-pc grub-pc/install_devices_empty boolean true" | debconf-set-selections run_root DEBIAN_FRONTEND=noninteractive apt-get -y install locales linux-base linux-image-generic grub-pc # Configure grub. run_root grub-install --target=i386-pc "${NBD_DEVICE}" run_root grub-mkconfig -o /boot/grub/grub.cfg # Install en configure SSH daemon. run_root apt-get -y install openssh-server # Generate fstab file. boot_uuid=$(blkid --match-tag UUID --output value "${NBD_DEVICE}p1") root_uuid=$(blkid --match-tag UUID --output value "${NBD_DEVICE}p2") cat >>/mnt/etc/fstab <