Preseed Provisioning Template in Forman for Debian 12. This fixes one deployment issue where the installer gets stuck trying to install python.

Preseed Debian 12

<%#
kind: provision
name: Preseed default
model: ProvisioningTemplate
oses:
- Debian
- Ubuntu
test_on:
- debian4dhcp
- ubuntu4dhcp
description: |
  The provisioning template for preseed based distributions. The output is fetched by the installer during
  the network based installation. To customize the installation, modify the host parameters.
-%>
<%
  proxy_string = host_param('http-proxy') ? " http://#{host_param('http-proxy')}:#{host_param('http-proxy-port')}" : ''
  ansible_enabled = plugin_present?('foreman_ansible')
  salt_enabled = host_param('salt_master') ? true : false
  os_major = @host.operatingsystem.major.to_i
  squeeze_or_older = (@host.operatingsystem.name == 'Debian' && os_major <= 6)
  python_package = (@host.operatingsystem.name == 'Ubuntu' && os_major >= 20) ? 'python3' : 'python'

  additional_packages = ['lsb-release', 'wget']
  additional_packages << host_param('additional-packages')
  # Fix:
  #
  # python_package is not needed for Debian 12 as the required version of python is installed by default
  #
  # Commented out:
  # additional_packages << python_package if ansible_enabled
  #
  additional_packages << 'eject' if @host.respond_to?(:bootdisk_build?) && @host.bootdisk_build?
  additional_packages = additional_packages.join(" ").split().uniq().join(" ")
%>
# This preseed file was rendered from the Foreman provisioning template "<%= @template_name %>".
# for <%= @host %> running <%= @host.operatingsystem.name %> <%= os_major %> <%= @arch %>
# Organization: <%= @host.organization %>
# Location: <%= @host.location %>

<%= snippet_if_exists(template_name + " custom pre") -%>

# Locale
d-i debian-installer/locale string <%= host_param('lang') || 'en_US' %>
# country and keyboard settings are automatic. Keep them ...
# ... for wheezy and newer:
d-i keyboard-configuration/xkb-keymap seen true
<% if squeeze_or_older -%>
# ... for squeeze and older:
d-i console-keymaps-at/keymap seen true
<% end -%>

<% subnet = @host.subnet -%>
<% if @static -%>
  <%- dhcp = false -%>
<% elsif subnet.nil? -%>
  <%- dhcp = true -%>
<% else -%>
  <%- dhcp = subnet.dhcp_boot_mode? -%>
<% end -%>
<% unless dhcp -%>
# Static network configuration.
d-i preseed/early_command string /bin/killall.sh; /bin/netcfg
d-i netcfg/disable_autoconfig boolean true
d-i netcfg/dhcp_failed note
d-i netcfg/dhcp_options select Configure network manually
d-i netcfg/disable_dhcp boolean true
d-i netcfg/get_ipaddress string <%= @host.ip %>
d-i netcfg/get_netmask string <%= subnet.mask %>
d-i netcfg/get_nameservers string <%= subnet.dns_servers.join(' ') %>
d-i netcfg/get_gateway string <%= subnet.gateway %>
d-i netcfg/confirm_static boolean true
<% end -%>

# Network configuration
d-i netcfg/choose_interface select auto
d-i netcfg/get_hostname string <%= @host %>
d-i netcfg/get_domain string <%= @host.domain %>
d-i netcfg/wireless_wep string

d-i hw-detect/load_firmware boolean true

<% if host_param_true?('preseed-live-installer') -%>
# Offline live-installer location
d-i live-installer/net-image string http://<%= @preseed_server %><%= @preseed_path %>/install/filesystem.squashfs
<% end -%>

# Mirror settings
d-i mirror/country string manual
d-i mirror/http/hostname string <%= @preseed_server %>
d-i mirror/http/directory string <%= @preseed_path %>
d-i mirror/http/proxy string<%= proxy_string %>
d-i mirror/codename string <%= @host.operatingsystem.release_name %>
d-i mirror/suite string <%= @host.operatingsystem.release_name %>
d-i mirror/udeb/suite string <%= @host.operatingsystem.release_name %>

# Time settings
d-i clock-setup/utc boolean true
d-i time/zone string <%= host_param('time-zone') || 'UTC' %>

# NTP
d-i clock-setup/ntp boolean true
d-i clock-setup/ntp-server string <%= host_param('ntp-server') || '0.debian.pool.ntp.org' %>

# Set alignment for automatic partitioning
# Choices: cylinder, minimal, optimal
#d-i partman/alignment select cylinder

<%= @host.diskLayout %>

<% if host_param('preseed-kernel-image') -%>
# Install different kernel
d-i base-installer/kernel/image string <%= host_param('preseed-kernel-image') %>
<% end %>

# User settings
d-i passwd/root-password-crypted password <%= root_pass %>
user-setup-udeb passwd/root-login boolean true
d-i passwd/make-user boolean false
user-setup-udeb passwd/make-user boolean false

<% repos = 0 %>

<% @additional_media.each do |medium| -%>
d-i apt-setup/local<%= repos %>/repository string <%= medium[:url] %> <%= @host.operatingsystem.release_name %>-<%= medium[:name] %> main
<%= "d-i apt-setup/local#{repos}/comment string #{medium[:comment]}" if medium[:comment] %>
<%= "d-i apt-setup/local#{repos}/key string #{medium[:gpgkey]}" if medium[:gpgkey] %>
<% repos +=1 -%>
<% end -%>

<% if salt_enabled -%>
<% if host_param_true?('enable-saltstack-repo') -%>
<% if @host.operatingsystem.name == 'Debian' -%>
d-i apt-setup/local<%= repos %>/repository string http://debian.saltstack.com/debian <%= @host.operatingsystem.release_name %>-saltstack main
d-i apt-setup/local<%= repos %>/comment string SaltStack Repository
d-i apt-setup/local<%= repos %>/key string http://debian.saltstack.com/debian-salt-team-joehealy.gpg.key
<% repos += 1 -%>
<% end -%>
<% if @host.operatingsystem.name == 'Ubuntu' -%>
d-i apt-setup/local<%= repos %>/repository string http://ppa.launchpad.net/saltstack/salt/ubuntu <%= @host.operatingsystem.release_name %> main
d-i apt-setup/local<%= repos %>/comment string SaltStack Repository
d-i apt-setup/local<%= repos %>/key string http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x4759FA960E27C0A6
<% repos += 1 -%>
<% end -%>
<% end -%>
<% end -%>

<% if host_param('kt_activation_keys') -%>
# If we are using Katello for content management, then we do not want to use
# upstream mirrors prior to Katello registration.
d-i apt-setup/use_mirror boolean false
d-i apt-setup/services-select multiselect

<% end -%>
# Install minimal task set (see tasksel --task-packages minimal)
tasksel tasksel/first multiselect minimal, ssh-server, openssh-server

# Install some base packages
d-i pkgsel/include string <%= additional_packages %>
d-i pkgsel/update-policy select <%= host_param('preseed-update-policy') || 'unattended-upgrades' %>
d-i pkgsel/upgrade select <%= host_param('preseed-post-install-upgrade') || 'none' %>

popularity-contest popularity-contest/participate boolean false

# Boot loader settings
#grub-pc grub-pc/hidden_timeout boolean false
#grub-pc grub-pc/timeout string 10
d-i grub-installer/only_debian boolean true
d-i grub-installer/with_other_os boolean true
d-i finish-install/reboot_in_progress note

<%= snippet_if_exists(template_name + " custom post") -%>

d-i preseed/late_command string wget -Y off <%= @static ? "'#{foreman_url('finish', static: 'true')}'" : foreman_url('finish') %> -O /target/tmp/finish.sh && in-target chmod +x /tmp/finish.sh && in-target /tmp/finish.sh