OpenStack diskimage-builder

sudo apt install -y curl python-pip qemu-utils
pip install diskimage-builder
 
# packages
dib/elements/my_pkg/package-installs.yaml
...
vlan:
wget:
linux-image-generic:
  uninstall: True
 
# change TMPDIR
export TMPDIR=/mnt
disk-image-create -o output.qcow --no-tmpfs vm block-device-gpt ubuntu-minimal

export DIB_QUIET=0
export ELEMENTS_PATH=/opt/ironic-python-agent-builder/dib:/opt/diskimage-builder/dib/elements
export IMAGE_NAME=ironic-python-agent
export DIB_ELEMENTS=ironic-python-agent-ramdisk
export DIB_RELEASE=focal
 
disk-image-create ${DIB_ELEMENTS} -o ${IMAGE_NAME} --logfile ${IMAGE_NAME}.log

export DIB_QUIET=0
export ELEMENTS_PATH=/opt/diskimage-builder/dib/elements
export IMAGE_NAME=img-${DIB_RELEASE}-minimal
export DIB_ELEMENTS=foo
export DIB_RELEASE=focal
 
disk-image-create ${DIB_ELEMENTS} -o ${IMAGE_NAME} -t tgz --logfile ${IMAGE_NAME}.log --checksum