Create Curtin development environment in a quick way

.gitignore

serial.log

activate.sh

#!/bin/bash
#
# ./activate.sh
#   ubuntu / passw0rd
#   "sudo shutdown -h now" to exit
#
#
# Flow:
#   - create boot.img in 2G qcow by converting cloud image
#   - use cloud-localds to make seed.img
#   - inject seed.img as cloud-init data for boot.img 1st boot
#   - ready to "curtin" something to disk1.img, which is a 5G disk in raw
#   format created by qemu-create.
#     - "curtin" tar.gz, which was downloaded from internet, to the disk1.img
#
#
# Tips to use the curtin ephemeral env (boot.img):
#   - The ephemeral env could access internet, because it needs to pull packages during installation (flash root.tar.gz or something to the target disk).
#   - you should tell where to get the root.tar.gz exactly by curtin install <the PATH>
#
#
# Refer to:
#   https://curtin.readthedocs.io/en/latest/topics/development.html
#   Updated: this page is not available anymore. The test flow seems
#   to be integrated in vmtest.
#   https://curtin.readthedocs.io/en/latest/topics/integration-testing.html
#

DLDIR=`mktemp -d -t curtin-dev-XXXXXX`
echo "Your temp working folder is: " $DLDIR

DLDIR=$( cd $DLDIR && pwd )

# pull curtin source
# checkout to the earlier version because I do not want to use the vmtest integreation test.
( cd ${DLDIR} && git clone https://git.launchpad.net/curtin && cd curtin && git checkout fb9900476fc0f6a6cda30e0828288ef2659b05cf )

# create the virtual environment
rel="trusty"
arch=amd64
burl="http://cloud-images.ubuntu.com/$rel/current/"
prefix="$rel-server-cloudimg-${arch}"

BOOTIMG_NAME="${prefix}-disk1.qcow2"
BOOTIMG_ORIG_NAME="${prefix}-disk1.img"
ROOTTGZ_NAME="${prefix}-root.tar.gz"
BOOTIMG="$DLDIR/${BOOTIMG_NAME}"
BOOTIMG_ORIG="$DLDIR/${BOOTIMG_ORIG_NAME}"
ROOTTGZ="$DLDIR/${ROOTTGZ_NAME}"


for f in ${ROOTTGZ_NAME} ${BOOTIMG_ORIG_NAME}
do
  wget "$burl/$f" -O $DLDIR/$f
done

( cd $DLDIR && qemu-img convert -O qcow ${BOOTIMG_ORIG} ${BOOTIMG} )

# activate the virtual environment
cd $DLDIR/curtin/
LAUNCH_CMD="./tools/launch $BOOTIMG --publish $ROOTTGZ -- curtin install \"PUBURL/${ROOTTGZ##*/}\""
echo ${LAUNCH_CMD}
${LAUNCH_CMD}

relaunch.sh

LAB="${HOME}/work/curtin-study/lab/launch-files"
qemu-system-x86_64 -enable-kvm \
  -device virtio-scsi-pci,id=virtio-scsi-xkvm \
  -device virtio-net-pci,netdev=net00 \
  -netdev type=tap,id=net00,script=no,downscript=no,ifname=tapvm0 \
  -drive file=${LAB}/boot.img,id=boot,if=none,format=qcow2,index=1,cache=unsafe \
  -device virtio-blk,drive=boot,serial=boot.img \
  -drive file=${LAB}/disk1.img,id=drv2,if=none,format=raw,index=2,cache=unsafe \
  -device virtio-blk,drive=drv2,serial=disk1.img,logical_block_size=512,physical_block_size=512,min_io_size=512 \
  -smp 2 \
  -m 1024 \
  -serial file:serial.log \
  -curses \
  -vga std \
  -drive file=${LAB}/seed.img,if=virtio,media=cdrom