#!/bin/sh # This script generates Alpine images for OpenNebula. # # Test image locally (without network) with: # qemu-system-x86_64 -enable-kvm -m 1G -drive file=$IMAGE,format=qcow2 set -e set -x # XXX: Handle command-line arguments? RELEASE=v3.12 ARCH=x86_64 IMAGE_PATH=alpine-$RELEASE-$(date -I).img.qcow2 IMAGE_SIZE=10G NBD_DEVICE=/dev/nbd0 APK_MIRROR=http://dl-2.alpinelinux.org/alpine/ # Mind the trailing / ONE_CONTEXT_APK_URL="https://github.com/OpenNebula/addon-context-linux/releases/download/v5.10.0/one-context-5.10.0-r1.apk" ONE_CONTEXT_APK_PATH=/root/one-context.apk cleanup() { # The order here is important. umount /mnt/dev/pts 2>/dev/null || true umount /mnt/dev/shm 2>/dev/null || true umount /mnt/dev 2>/dev/null || true umount /mnt/proc 2>/dev/null || true umount /mnt/run 2>/dev/null || true umount /mnt/sys 2>/dev/null || true umount /mnt/boot 2>/dev/null || true umount /mnt 2>/dev/null || true qemu-nbd --disconnect "$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 [ "$(lsb_release --short --id)" != "Alpine" ]; then echo "WARNING: this script has been designed to run on an Alpine system." >&2 echo "WARNING: Not running Alpine. Giving you 5 seconds to abort." >&2 sleep 5 fi # Create base QCOW2 image. qemu-img create -f qcow2 "$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. run_root setup-timezone -z UTC if [ "$RELEASE" = "edge" ] then cat >/mnt/etc/apk/repositories </mnt/etc/apk/repositories <>/mnt/etc/fstab </mnt/boot/extlinux.conf < "/mnt$ONE_CONTEXT_APK_PATH" run_root apk add --allow-untrusted "$ONE_CONTEXT_APK_PATH" run_root rm "$ONE_CONTEXT_APK_PATH" # Remove resolvconf: handled by uncloud-init. run_root rm /etc/resolv.conf # Make sure everything is written to disk before exiting. sync