From 826906bb4237c8ead9afe60cc54eb2c454cdc63e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timoth=C3=A9e=20Floure?= <timothee.floure@posteo.net>
Date: Thu, 29 Jul 2021 16:15:42 +0200
Subject: [PATCH] [opennebula] initial openSUSE image definition

---
 .../opensuse-build-opennebula-image.sh        | 172 ++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100755 opennebula-images/opensuse-build-opennebula-image.sh

diff --git a/opennebula-images/opensuse-build-opennebula-image.sh b/opennebula-images/opensuse-build-opennebula-image.sh
new file mode 100755
index 0000000..aeaf474
--- /dev/null
+++ b/opennebula-images/opensuse-build-opennebula-image.sh
@@ -0,0 +1,172 @@
+#!/bin/sh
+
+# This script generates openSUSE images for OpenNebula.
+#
+# Run locally (without network) with:
+#   qemu-system-x86_64 -enable-kvm -m 1G -drive file=$IMAGE,format=qcow2
+
+set -e
+set -x
+
+# XXX: Handle command-line arguments?
+RELEASE=leap
+RELEASE_VERSION=15.2
+IMAGE_PATH=opensuse-${RELEASE}${RELEASE_VERSION}-$(date -I).img.qcow2
+IMAGE_SIZE=10G
+NBD_DEVICE=/dev/nbd1
+
+# TODO: find the package definition and built ourself, publish in some RPM repository.
+ONE_CONTEXT_RPM_URL="https://github.com/OpenNebula/addon-context-linux/releases/download/v5.12.0.2/one-context-5.12.0.2-1.suse.noarch.rpm"
+ONE_CONTEXT_RPM_PATH=/root/one-context.rpm
+
+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)" != "openSUSE" ]; then
+	echo "WARNING: this script has been designed to run on an openSUSE system." >&2
+	echo "WARNING: Not running openSUSE. Giving you 5 seconds to abort." >&2
+	sleep 5
+fi
+
+repo_addr=http://download.opensuse.org
+case "$RELEASE" in
+	leap)
+		distribution_slice=$RELEASE/$RELEASE_VERSION
+		oss_repo_url="${repo_addr}/distribution/${distribution_slice}/repo/oss"
+		;;
+	tumbleweed)
+		distribution_slice=$RELEASE
+		oss_repo_url="${repo_addr}/${distribution_slice}/repo/oss"
+	;;
+	*)
+		echo "Unkown openSUSE release: $RELEASE." >&2
+		exit 1
+	;;
+esac
+oss_update_repo_url="${repo_addr}/update/${distribution_slice}/oss"
+
+# Create base QCOW2 image.
+qemu-img create -f qcow2 "$IMAGE_PATH" "$IMAGE_SIZE"
+modprobe nbd max_part=16
+qemu-nbd --connect="$NBD_DEVICE" "$IMAGE_PATH"
+
+# Don't forget to cleanup, even if the script crash.
+trap cleanup EXIT
+
+# Create partition table, format partitions.
+sfdisk --no-reread "$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
+
+zypper --root /mnt addrepo $oss_repo_url opensuse-$RELEASE-oss
+zypper --root /mnt addrepo $oss_update_repo_url opensuse-$RELEASE-oss-update
+zypper --root /mnt --gpg-auto-import-keys refresh
+zypper --root /mnt --non-interactive install -t pattern minimal_base
+
+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
+
+# Guest networking is to be handled by the one-context package.
+# See https://github.com/OpenNebula/addon-context-linux for details.
+# Note: as of writing, one-context does not support NetworkManager or
+# systemd-networkd.
+
+# Required to resolve package mirror in chroot.
+#cat /etc/resolv.conf /mnt/etc/resolv.conf
+
+# Initialize /etc/hosts.
+cat > /mnt/etc/hosts << EOF
+127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
+::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
+
+EOF
+
+# Install (magic?) one-context RPM and hope things works as expected.
+curl -L "$ONE_CONTEXT_RPM_URL" > "/mnt$ONE_CONTEXT_RPM_PATH"
+run_root zypper -n --no-gpg-checks install "$ONE_CONTEXT_RPM_PATH"
+run_root rm "$ONE_CONTEXT_RPM_PATH"
+
+# Install resize2fs, which is required to resize the root file-system.
+run_root zypper -n install e2fsprogs
+
+# 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 haveged due to lack of entropy in ONE environment.
+run_root zypper -n install haveged
+run_root systemctl enable haveged.service
+
+# Install kernel and bootloader.
+run_root zypper -n install kernel-default grub2
+
+# Add support for virtio block devices at boot time.
+cat > /mnt/etc/dracut.conf.d/virtio-blk.conf <<EOF
+add_drivers="virtio-blk"
+EOF
+kernel_version=$(ls /mnt/boot | grep "^vmlinuz-.*" | cut -d- -f2-)
+run_root dracut --force --kver $kernel_version
+
+# Configure grub2.
+run_root grub2-install --target=i386-pc "${NBD_DEVICE}"
+run_root grub2-mkconfig -o /boot/grub2/grub.cfg
+
+# Install en configure SSH daemon.
+run_root zypper -n install openssh
+run_root systemctl enable sshd
+
+# 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
+
+# Reset systemd's environment.
+run_root rm -f /etc/machine-id
+run_root touch /etc/machine-id
+rm -f /var/lib/systemd/random-seed
+
+# Remove temporary files and reclaim freed disk space.
+# Note: build logs could be removed as well.
+run_root zypper clean --all
+
+# Make sure everything is written to disk before exiting.
+sync