179 lines
4.4 KiB
Bash
Executable file
179 lines
4.4 KiB
Bash
Executable file
#!/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=$IMAGE,format=qcow2
|
|
|
|
set -e
|
|
set -x
|
|
|
|
# XXX: Handle command-line arguments?
|
|
RELEASE=v3.13
|
|
ARCH=x86_64
|
|
IMAGE_PATH=alpine-$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" <<EOF
|
|
1M,500M,L,*
|
|
,,L
|
|
EOF
|
|
|
|
mkfs.ext4 "${NBD_DEVICE}p1"
|
|
mkfs.ext4 "${NBD_DEVICE}p2"
|
|
|
|
# Mount partitions, install base OS.
|
|
|
|
mount "${NBD_DEVICE}p2" /mnt
|
|
mkdir /mnt/boot
|
|
mount "${NBD_DEVICE}p1" /mnt/boot
|
|
|
|
|
|
# TODO: Remove bash
|
|
apk add -U -X $APK_MIRROR$RELEASE/main/ \
|
|
--allow-untrusted \
|
|
--arch="$ARCH" \
|
|
--root=/mnt \
|
|
--initdb \
|
|
alpine-base alpine-conf openssh sudo tzdata gnupg haveged bash eudev
|
|
|
|
mount --bind /dev /mnt/dev
|
|
mount --bind /dev/pts /mnt/dev/pts
|
|
mount --bind /dev/shm /mnt/dev/shm
|
|
mount --bind /proc /mnt/proc
|
|
mount --bind /run /mnt/run
|
|
mount --bind /sys /mnt/sys
|
|
|
|
# Required to resolve package mirror in chroot.
|
|
cp /etc/resolv.conf /mnt/etc/resolv.conf
|
|
|
|
# Initialize networking.
|
|
run_root setup-interfaces -i << EOF
|
|
auto lo
|
|
iface lo inet loopback
|
|
EOF
|
|
|
|
cat > /mnt/etc/hosts << EOF
|
|
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
|
|
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
|
|
|
|
EOF
|
|
|
|
# Configure package sources and update package index.
|
|
run_root setup-timezone -z UTC
|
|
if [ "$RELEASE" = "edge" ]
|
|
then
|
|
cat >/mnt/etc/apk/repositories <<EOF
|
|
$APK_MIRROR$RELEASE/main
|
|
$APK_MIRROR$RELEASE/community
|
|
$APK_MIRROR$RELEASE/testing
|
|
EOF
|
|
else
|
|
cat >/mnt/etc/apk/repositories <<EOF
|
|
$APK_MIRROR$RELEASE/main
|
|
$APK_MIRROR$RELEASE/community
|
|
EOF
|
|
fi
|
|
|
|
# Update package index.
|
|
run_root apk update
|
|
|
|
# Initialize base services.
|
|
for i in devfs dmesg hwdrivers mdev; do
|
|
run_root rc-update add $i sysinit
|
|
done
|
|
|
|
for i in bootmisc hostname hwclock modules sysctl syslog acpid networking urandom haveged; do
|
|
run_root rc-update add $i boot
|
|
done
|
|
|
|
for i in ntpd sshd crond; do
|
|
run_root rc-update add $i default
|
|
done
|
|
|
|
for i in mount-ro killprocs savecache; do
|
|
run_root rc-update add $i shutdown
|
|
done
|
|
|
|
# Set hostname.
|
|
run_root setup-hostname -n alpine
|
|
|
|
# Generate fstab file.
|
|
boot_uuid=$(blkid --match-tag UUID --output value "${NBD_DEVICE}p1")
|
|
root_uuid=$(blkid --match-tag UUID --output value "${NBD_DEVICE}p2")
|
|
cat >>/mnt/etc/fstab <<EOF
|
|
UUID=$boot_uuid /boot ext4 rw,relatime,data=ordered 0 2
|
|
UUID=$root_uuid / ext4 rw,relatime,data=ordered 0 1
|
|
EOF
|
|
|
|
# Install kernel and bootloader.
|
|
run_root apk add linux-virt syslinux
|
|
|
|
dd if=/usr/share/syslinux/mbr.bin of="$NBD_DEVICE" bs=1 count=440
|
|
extlinux -i /mnt/boot
|
|
|
|
cat >/mnt/boot/extlinux.conf <<EOF
|
|
DEFAULT linux
|
|
LABEL linux
|
|
LINUX vmlinuz-virt
|
|
INITRD initramfs-virt
|
|
APPEND root=UUID=$root_uuid rw modules=sd-mod,usb-storage,ext4 quiet rootfstype=ext4
|
|
EOF
|
|
|
|
# Install one-context APK and hope things works as expected.
|
|
curl -L "$ONE_CONTEXT_APK_URL" > "/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
|