templates/debian11_preseed.cfg.j2

#_preseed_V1
{#
SPDX-FileCopyrightText: © 2022 Open Networking Foundation <support@opennetworking.org>
SPDX-License-Identifier: Apache-2.0
#}
# docs https://www.debian.org/releases/stable/amd64/apb.en.html

# enable automatic install
d-i auto-install/enable boolean true

# ask only critical level questions
d-i debconf/priority select critical

# locale and keyboard
d-i debian-installer/locale string en_US.UTF-8
d-i console-setup/ask_detect boolean false
d-i keyboard-configuration/xkb-keymap select us

# clock
d-i clock-setup/utc boolean true
d-i time/zone string Etc/UTC
d-i clock-setup/ntp boolean true
d-i clock-setup/ntp-server string pool.ntp.org

# network and hostname
{% if 'iface' in item %}
d-i netcfg/choose_interface select {{ item['iface'] }}
{% else %}
d-i netcfg/choose_interface select auto
{% endif %}
d-i netcfg/hostname string {{ item['hostname'] }}
d-i netcfg/get_domain string {{ item['domain'] }}

# load network card firmware
d-i hw-detect/load_firmware boolean true

## Storage
# overwrite previous partitions
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-lvm/confirm boolean true
d-i partman-lvm/confirm_nooverwrite boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-md/confirm boolean true

# use lvm
d-i partman-auto/method string lvm
d-i partman-auto/init_automatically_partition select biggest_free
d-i partman-auto-lvm/guided_size string max
d-i partman-auto-lvm/new_vg_name string primary

# use gpt
d-i partman-basicfilesystems/choose_label string gpt
d-i partman-basicfilesystems/default_label string gpt
d-i partman-partitioning/choose_label string gpt
d-i partman-partitioning/default_label string gpt
d-i partman/choose_label string gpt
d-i partman/default_label string gpt

# use ext4
d-i partman/default_filesystem string ext4

# partitioning
d-i partman-auto/choose_recipe select atomic
d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/alignment select optimal
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true

# configure grub
# install to first disk
d-i grub-installer/bootdev string /dev/sda
d-i grub-installer/with_other_os boolean true
d-i grub-installer/only_debian boolean true
d-i grub-installer/make_active boolean true
d-i grub-installer/skip boolean false

## Software
# mirror
d-i mirror/country string manual
d-i mirror/http/hostname string http.us.debian.org
d-i mirror/http/directory string /debian
d-i mirror/http/proxy string

# base install
d-i base-installer/install-recommends boolean false

# install only the standard system utils
tasksel tasksel/first multiselect standard, ssh-server

# install python3
d-i pkgsel/include string python3

# upgrade all packages on install
d-i pkgsel/upgrade select full-upgrade

# include nonfree
d-i apt-setup/non-free boolean true

# don't use popcon
popularity-contest popularity-contest/participate boolean false

# don't allow root login over SSH
openssh-server openssh-server/permit-root-login boolean true
openssh-server openssh-server/password-authentication boolean true

# verbose boot, no splashscreen
d-i debian-installer/quiet boolean false
d-i debian-installer/splash boolean false

## Users
# disable root account
d-i passwd/root-login boolean false
d-i passwd/root-password-crypted password !!

# create user
d-i passwd/username string onfadmin
d-i passwd/user-fullname string ONFAdmin
d-i passwd/user-password-crypted password {{ preseed_onfadmin_pw_crypt }}

# add SSH pubkey key to user, secure SSHd
d-i preseed/late_command string \
  in-target mkdir -p --mode=0700 /home/onfadmin/.ssh ;\
  in-target sh -c 'echo "{{ preseed_onfadmin_ssh_pubkey }}" > /home/onfadmin/.ssh/authorized_keys';\
  in-target chmod 0600 /home/onfadmin/.ssh/authorized_keys;\
  in-target chown -R onfadmin:onfadmin /home/onfadmin/.ssh;\
  in-target sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin no/g' /etc/ssh/sshd_config;\
  in-target sed -i 's/#PasswordAuthentication yes/PasswordAuthentication no/g' /etc/ssh/sshd_config;

## Reboot
d-i finish-install/reboot_in_progress note