Provided by: openstack-debian-images_1.36_amd64 bug


       build-openstack-debian-image - build a Debian image to be used with OpenStack


       build-openstack-debian-image    --release|-r   <wheezy|jessie|stretch|buster|bullseye>   [
       OPTIONS ]


       The build-openstack-debian-image shell script will build a Debian image which can be  used
       in   an   OpenStack   IaaS   cloud.   The   resulting  (Qcow2  and  raw  images)  contains
       initramfs-growroot so that the root partition will be resized (during the initramfs phase,
       before  mouting  anything)  to  match the flavor selected when using "nova boot". Later on
       during the boot process, cloud-init will resize the root partition on the fly  (resize  is
       performed when the partition is already mounted read-write, since recent kernel allow that
       for ext3).

       Cloud-init is setup to use an Ec2 metadata server, which is what OpenStack  is  compatible
       with.  A  "debian"  (configurable with the use of the --login option) user will be used to
       receive the ssh key from the user data blob.  This user is setup without a  password  (eg:
       adduser  --disabled-password).   Once  logged  as  this  "debian" user in your new virtual
       machine, you can "sudo" to root from that user,  without  needing  a  password.  The  root
       password is "password" by default, and ssh into the root user without using an ssh keypair
       is disabled by default (PermitRootLogin without-password is set in /etc/ssh/sshd_config).


       --release|-r wheezy|jessie|stretch|buster|bullseye

              Sets the release name to be installed. Currently only 5 values a  possible:  wheezy
              or jessie or stretch or buster or bullseye.

              At  the  time of writing, bullseye is only here to prepare the future, and will not
              work until it effectively becomes the new testing.


       --extra-packages|-e PACKAGE,PACKAGE,...

              Select  the  PACKAGE  you  want  to  add   to   the   image   default   is:   bash-
              completion,joe,most,screen,less,vim,bzip2  Note  that  this  list of extra packages
              isn't used if you use the --minimal option.

       --debootstrap-url|-u <debootstrap-debian-mirror>

              Select the URL of the Debian mirror to use to perform the debootstrap. For example:

       --boot-manager|-bm <grub|syslinux>

              Select  what type of boot manager to use inside the image. The default is Grub, but
              you can as well decide to use syslinux if you prefer.

       --boot-type|-bt <mbr|uefi>

              Select how to boot the image: using legacy MBR-style (aka BIOS  or  CSM)  boot,  or
              UEFI.  The  default  is  mbr.  Selecting  uefi requires the use of Grub as the boot
              manager, and will set up an extra EFI System Partition inside the image to  support
              UEFI boot.

       --architecture|- <amd64|arm64>

              Select  the  architecture to target for the output image. This will not cross build
              for that architecture, but will pick the  right  architecture-specific  components.
              Supported options are "amd64" and "arm64"; "amd64" is default.

       --sources.list-mirror|-s <source-list-mirror>

              URL  to  use  when  building  the sources.list inside the chroot. If this option is
              omitted, then the global redirector is used.  For example, you
              can use:


              Without this option, the following packages will also be installed: bash-completion
              (and /etc/bash.bashrc will be setup to use bash-completion), joe (the text editor),
              most,  GNU screen, less and vim. If you believe that more things should be added in
              the non-minimal image, suggestions are welcome.


              Build an image for the Microsoft Azure cloud. Note that this option is incompatible
              with the --automatic-resize|-ar option, which will be ignored.

       --image-size|-is <image-size>

              Select  the image size (default to 2 GBytes if this option is omitted). Only useful
              if you need to use a custom script hook (see below).


              Reduce the image to the minimum HDD size possible. The partition of the image  will
              be  first  shrinked with resize2fs -M, then the space it takes will be used to do a
              2nd resize2fs adding a bit of extra space for the operating system to write runtime
              data (see below). Since this option takes a lot of time, it is disabled by default.

       --automatic-resize-space|-ars <supplementary-space>

              Size  of  the supplementary space added to the partition after it is resized to the
              minimum. If this option is omitted, then 50G is used. If  --automatic-resize  isn't
              used, then it is useless to set this option, which will be ignored.

       --login|-l <user-login>

              Change the login name (default to debian) for the user created by Cloud-Init.

       --password|-p <root-password>

              Defines  a  default  root  password for your image. This option is dangerous, first
              because it will show the root password to the user of  the  computer  building  the
              image  if  using  "ps",  then  also  because  it  is best to not set a default root
              password at  all  if  possible.  However,  this  option  is  still  there,  because
              sometimes,  you  need  to  be  able  to debug your image, and login through the web
              console of horizon. In a production environment, do not use this option.

       --hook-script|-hs <hook-script>

              If you wish to further customize the generated cloud image,  you  can  use  a  hook
              script.   When  called,  build-openstack-debian-image  will  fill  up  some  BODI_*
              environment variable for the hook script to use as per below:

              BODI_CHROOT_PATH path where the image is mounted

              BODI_RELEASE name of the Debian release that is being bootstraped


              Here is an example with the short parameter names:

       build-openstack-debian-image         -u         -s  -is 5 -e libapache2-mod-php5 -hs ~/customize-my-image -ar
       -ars 100

              And the same but with long names for options:

       build-openstack-debian-image       --debootstrap-url
       --sources.list-mirror  --image-size  5  --extra-packages
       libapache2-mod-php5      --hook-script       ~/customize-my-image       --automatic-resize
       --automatic-resize-space 100


       build-openstack-debian-image  has  been  written by Thomas Goirand <>, with
       contributions from Mehdi Abaakouk <>.