Preseeding debian 11 fully unattended (get rid of questions)

I'm trying to preseed debian 11 netinstall fully automated. I read many of the documentation here :

Here is my boot line (from a grub.cfg)

set default="autoinstall"
set timeout=3

menuentry "Debian 11 Fully Automated UEFI LVM LUKS BTRFS Remote Decrypt DEBUG TTY4" --id autoinstall {
        set background_color=black
        linux    /debian-installer/amd64/linux auto=true url=tftp://192.168.1.100/preseed/debseed11_crypt.cfg net.ifnames=0 biosdevname=0 ipv6.disable=1 language=en locale=en_US.UTF-8 keymap=fr vga=788 noprompt DEBCONF_DEBUG=5 --- quiet
        initrd   /debian-installer/amd64/initrd.gz
}

Here is my preseed file :

#### Preseed preconfiguration file (for Debian buster)
### Partman early command
### Kernal parameter
#d-i debian-installer/add-kernel-opts string net.ifnames=0 biosdevname=0 hostname=unassigned-hostname domain=unassigned-domain
#d-i debconf/priority critical

#d-i debian-installer/add-kernel-opts string net.ifnames=0 biosdevname=0 console=ttyS0,19200n8
### Localization
d-i debian-installer/locale string en_US
d-i debian-installer/language string en
d-i debian-installer/country string US
#d-i debian-installer/locale string en_US.UTF-8 fr_FR.UTF-8
d-i localechooser/supported-locales multiselect en_US.UTF-8, fr_FR.UTF-8

### Keyboard selection
d-i keyboard-configuration/xkb-keymap select fr

###  Network configuration

# Netcfg choisira une interface connectée si possible. Cela empêchera
# # d'afficher une liste s'il y a plusieurs interfaces.
d-i netcfg/choose_interface select auto

#d-i netcfg/choose_interface select eth0
d-i netcfg/use_dhcp string true
d-i netcfg/link_wait_timeout string 10
d-i netcfg/dhcp_timeout string 60

#d-i netcfg/disable_autoconfig boolean true

d-i netcfg/dhcp_failed note
#d-i netcfg/dhcp_options select auto

#Configure network manually
# IPv4 Static network configuration
#d-i netcfg/get_ipaddress string 192.168.1.120
#d-i netcfg/get_netmask string 255.255.255.0
#d-i netcfg/get_gateway string 192.168.1.1
#d-i netcfg/get_nameservers string 192.168.1.1
#d-i netcfg/confirm_static boolean true

# Set a hostname
#d-i netcfg/get_hostname string zhurong
#d-i netcfg/get_domain string planet.mars
# Force a hostname
#d-i netcfg/hostname string zhurong.planet.mars
# Disable that annoying WEP key dialog
d-i netcfg/wireless_wep string


d-i netcfg/get_hostname unassigned-hostname 
d-i netcfg/get_domain unassigned-domain
d-i netcfg/get_hostname seen true
d-i netcfg/get_domain seen true

### Mirror settings
d-i mirror/country string manual
d-i mirror/http/hostname string httpredir.debian.org
d-i mirror/http/directory string /debian
d-i mirror/http/proxy string

### Account setup
# Skip creation of a normal user account
d-i passwd/make-user boolean false
# Set root password
# or encrypted using a crypt(3)  hash.
d-i passwd/root-password-crypted password $6$47Cx5oMpkh66eYNI$LV76xupgkvZ3rHJCq1NgXKzp3bBDv6g0FmMiSvmUp1jqaIkTEz5F6eA.SRhBzyPReVQEnzZWwFWSdKGBBn.tE1

### Clock and time zone setup
# Set hardware clock to UTC
d-i clock-setup/utc boolean true
# Set timezone
d-i time/zone string Europe/Paris
# Use NTP clock during installation
d-i clock-setup/ntp boolean true

### Partitioning
# LVM LUKS method

# Inhibit partman to fill the disk with random data 
d-i partman-auto-crypto/erase_disks boolean false

#d-i partman/early_command \
#       string dd if=/dev/zero of=/dev/sda bs=512 count=1
d-i partman-auto/method string crypto
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-lvm/confirm boolean true
d-i partman-auto-lvm/guided_size string max
d-i partman-auto-lvm/new_vg_name string debian
d-i partman-auto/disk string /dev/vda
d-i partman-auto/choose_recipe select boot-crypto
d-i partman-crypto/passphrase       password  aaabbbccc
d-i partman-crypto/passphrase-again password  aaabbbccc
d-i partman-auto/expert_recipe string \
boot-crypto :: \
  1024 1024 1024 ext4 \
          $primary{ } $bootable{ } \
          method{ format } format{ } \
          use_filesystem{ } filesystem{ ext4 } \
          mountpoint{ /boot } \
  . \
  8192 8192 8192 linux-swap \
          $lvmok{ } lv_name{ swap } \
          in_vg { debian } \
          method{ swap } format{ } \
  . \
  80896 80896 1000000 btrfs \
          $lvmok{ } lv_name{ root } \
          in_vg { debian } \
          method{ format } format{ } \
          use_filesystem{ } filesystem{ btrfs } \
          mountpoint{ / } \
   . \

#d-i partman-basicfilesystems/no_mount_point boolean false
d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true

d-i partman-md/confirm boolean true
d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true

### Apt setup
d-i apt-setup/cdrom/set-first boolean false
d-i apt-setup/cdrom/set-next boolean false
d-i apt-setup/cdrom/set-failed boolean false
d-i apt-setup/services-select multiselect security, updates
d-i apt-setup/security_host string security.debian.org
### Package selection
tasksel tasksel/first multiselect standard
# Individual additional packages to install
d-i pkgsel/include string openssh-server vim tmux tcpdump dropbear-initramfs cryptsetup-initramfs python3.9
d-i pkgsel/upgrade select full-upgrade
d-i pkgsel/update-policy select none
d-i pkgsel/updatedb boolean true
popularity-contest popularity-contest/participate boolean false


### GRUB STUFF
d-i grub-installer/only_debian boolean true
d-i grub-installer/bootdev  string default

# Note: options passed to the installer will be added automatically. 
#d-i debian-installer/add-kernel-opts string nousb

# Optional password for grub, either in clear text
# #d-i grub-installer/password password r00tme
# #d-i grub-installer/password-again password r00tme
# # or encrypted using an MD5 hash, see grub-md5-crypt(8).
# #d-i grub-installer/password-crypted password [MD5 hash]
#
# # Use the following option to add additional boot parameters for the
# # installed system (if supported by the bootloader installer).
# # Note: options passed to the installer will be added automatically.
# #d-i debian-installer/add-kernel-opts string nousb
#
# ### Finishing up the installation
# # Avoid that last message about the install being complete.
d-i finish-install/reboot_in_progress note


d-i preseed/late_command string \
  mkdir -p -m 700 /target/root/.ssh; \
  echo "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJEe3gF//znGIzq30frI6O9qDn5eM6uqEZZlx7mR5SiS" > /target/root/.ssh/authorized_keys; \
  in-target chown --recursive root:root /root/.ssh; \
  in-target chmod 0644 /root/.ssh/authorized_keys; \
  in-target update-alternatives --set editor /usr/bin/vim.basic; \
  in-target passwd --expire root; \
  in-target echo 'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJEe3gF//znGIzq30frI6O9qDn5eM6uqEZZlx7mR5SiS' > /etc/dropbear-initramfs/authorized_keys; \
  in-target sed -i '/*PasswordAuthentication*/c\PasswordAuthentication no' /etc/ssh/sshd_config; \
  in-target sed -i '/*PasswordAuthentication*/c\PasswordAuthentication no' /etc/ssh/sshd_config; \
  in-target systemctl enable --now sshd; \
  in-target sed -i '/*DROPBEAR_OPTIONS=*/c\DROPBEAR_OPTIONS="-I 300 -j -k -p 22 -s -c /bin/cryptroot-unlock "' /etc/dropbear-initramfs/config; \
  in-target sed -i '/*IP=*/c\IP="dhcp"' /etc/initramfs-tools/initramfs.conf; \
  in-target update-initramfs -u;
#

For the moment i got the debien installer asking me for :

hostname
domain name

I'm just trying to get rid of those questions. Here is what i tried :

I tried to play with priority=critical in command line kernel options on pxe server.
i configured my dhcpd sever to manage hostname domain name of this specific hosts.

host curiosity {
hardware ethernet 12:34:45:12:34:56;
fixed-address 192.168.1.90;
option host-name "curiosity";
option domain-name "planet.mars";
}

I know i can setup the hostname/domain variables and all it will be alright but i want to make a very universal preseed to deploy on multiple servers.

Some help or clues would be very appreciated.

In advance thank you.

EDIT : Resolved :

By the way the first preseed was not perfect. If someone's interested here is a better one.

It does Fully automated Debian 11 UEFI LUKS BTRFS Remote Decrypt via ssh DEBUG TTY4

#### Preseed preconfiguration file (for Debian bullseye)

# Debian 11 Fully Automated UEFI LVM LUKS BTRFS Remote Decrypt via ssh DEBUG # TTY4


### Partman early command
### Kernel parameter
#d-i debian-installer/add-kernel-opts string net.ifnames=0 biosdevname=0 hostname=unassigned-hostname domain=unassigned-domain
#d-i debconf/priority critical

#d-i debian-installer/add-kernel-opts string net.ifnames=0 biosdevname=0 console=ttyS0,19200n8
### Localization
d-i debian-installer/locale string en_US
d-i debian-installer/language string en
d-i debian-installer/country string US
#d-i debian-installer/locale string en_US.UTF-8 fr_FR.UTF-8
d-i localechooser/supported-locales multiselect en_US.UTF-8, fr_FR.UTF-8

### Keyboard selection
d-i keyboard-configuration/xkb-keymap select fr

###  Network configuration

# Netcfg choisira une interface connectée si possible. Cela empêchera
# # d'afficher une liste s'il y a plusieurs interfaces.
d-i netcfg/choose_interface select auto

#d-i netcfg/choose_interface select eth0
d-i netcfg/use_dhcp string true
d-i netcfg/link_wait_timeout string 10
d-i netcfg/dhcp_timeout string 60

#d-i netcfg/disable_autoconfig boolean true

d-i netcfg/dhcp_failed note
#d-i netcfg/dhcp_options select auto

#Configure network manually
# IPv4 Static network configuration
#d-i netcfg/get_ipaddress string 192.168.1.120
#d-i netcfg/get_netmask string 255.255.255.0
#d-i netcfg/get_gateway string 192.168.1.1
#d-i netcfg/get_nameservers string 192.168.1.1
#d-i netcfg/confirm_static boolean true

# Set a hostname
#d-i netcfg/get_hostname string zhurong
#d-i netcfg/get_domain string planet.mars
# Force a hostname
#d-i netcfg/hostname string zhurong.planet.mars
# Disable that annoying WEP key dialog
d-i netcfg/wireless_wep string

#d-i netcfg/get_hostname=install
d-i netcfg/get_hostname unassigned-hostname 
d-i netcfg/get_domain unassigned-domain
d-i netcfg/get_hostname seen true
d-i netcfg/get_domain seen true

### Mirror settings
d-i mirror/country string manual
d-i mirror/http/hostname string httpredir.debian.org
d-i mirror/http/directory string /debian
d-i mirror/http/proxy string

### Account setup
# Skip creation of a normal user account
d-i passwd/make-user boolean false
# Set root password
# or encrypted using a crypt(3)  hash.
d-i passwd/root-password-crypted password $6$47Cx5oMpkh999YNI$XG76xupgkvZ3rHJCq1NgXKzp3bBfIuj0FmMiSvmUp1jqaIkTEz5F6eA.SRhBzyPReVQEnzZWwFWSdYGCBn.tE1

### Clock and time zone setup
# Set hardware clock to UTC
d-i clock-setup/utc boolean true
# Set timezone
d-i time/zone string Europe/Paris
# Use NTP clock during installation
d-i clock-setup/ntp boolean true

### Partitioning
# LVM LUKS method

# Inhibit partman to fill the disk with random data 
d-i partman-auto-crypto/erase_disks boolean false

#d-i partman/early_command \
#       string dd if=/dev/zero of=/dev/sda bs=512 count=1

# Force UEFI booting ('BIOS compatibility' will be lost). Default: false.
d-i partman-efi/non_efi_system boolean false
# Ensure the partition table is GPT - this is required for EFI
d-i partman-partitioning/choose_label string gpt
d-i partman-partitioning/default_label string gpt

d-i partman-auto/method string crypto
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-lvm/confirm boolean true
d-i partman-auto-lvm/guided_size string max
d-i partman-auto-lvm/new_vg_name string debian
d-i partman-auto/disk string /dev/sda
d-i partman-auto/choose_recipe select boot-crypto
d-i partman-crypto/passphrase       password  aabbcc
d-i partman-crypto/passphrase-again password  aabbcc
d-i partman-auto/expert_recipe string \
boot-crypto :: \
  512 50 512 fat32 \
          $primary{ } $bootable{ } \
          method{ efi } format{ } \
          mountpoint{ /boot/efi } \
  . \
  1024 1024 1024 ext4 \
          $primary{ } $bootable{ } \
          method{ format } format{ } \
          use_filesystem{ } filesystem{ ext4 } \
          mountpoint{ /boot } \
  . \
  8192 8192 8192 linux-swap \
          $lvmok{ } lv_name{ swap } \
          in_vg { debian } \
          method{ swap } format{ } \
  . \
  80896 80896 1000000 btrfs \
          $lvmok{ } lv_name{ root } \
          in_vg { debian } \
          method{ format } format{ } \
          use_filesystem{ } filesystem{ btrfs } \
          mountpoint{ / } \
  . \

#d-i partman-basicfilesystems/no_mount_point boolean false
d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true

d-i partman-md/confirm boolean true
d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true

### Apt setup
d-i apt-setup/cdrom/set-first boolean false
d-i apt-setup/cdrom/set-next boolean false
d-i apt-setup/cdrom/set-failed boolean false
d-i apt-setup/services-select multiselect security, updates
d-i apt-setup/security_host string security.debian.org
### Package selection
tasksel tasksel/first multiselect standard
# Individual additional packages to install
d-i pkgsel/include string openssh-server vim tmux tcpdump dropbear-initramfs cryptsetup-initramfs python3.9
d-i pkgsel/upgrade select full-upgrade
d-i pkgsel/update-policy select none
d-i pkgsel/updatedb boolean true
popularity-contest popularity-contest/participate boolean false


### GRUB STUFF
d-i grub-installer/only_debian boolean true
d-i grub-installer/bootdev  string default

# Note: options passed to the installer will be added automatically. 
#d-i debian-installer/add-kernel-opts string nousb

# Optional password for grub, either in clear text
# #d-i grub-installer/password password r00tme
# #d-i grub-installer/password-again password r00tme
# # or encrypted using an MD5 hash, see grub-md5-crypt(8).
# #d-i grub-installer/password-crypted password [MD5 hash]
#
# # Use the following option to add additional boot parameters for the
# # installed system (if supported by the bootloader installer).
# # Note: options passed to the installer will be added automatically.
# #d-i debian-installer/add-kernel-opts string nousb
#
# ### Finishing up the installation
# # Avoid that last message about the install being complete.
d-i finish-install/reboot_in_progress note


d-i preseed/late_command string \
  mkdir -p -m 700 /target/root/.ssh; \
  echo "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJEe3gF//znGIzq30frI6O9qDn5eM6uqEZZlx7mR5SiS" > /target/root/.ssh/authorized_keys; \
  in-target chown --recursive root:root /root/.ssh; \
  in-target chmod 0644 /root/.ssh/authorized_keys; \
  in-target update-alternatives --set editor /usr/bin/vim.basic; \
  

d-i preseed/late_command string \
  mkdir -p -m 700 /target/root/.ssh; \
  echo "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJEe3gF//znGIzq30frI6O9qDn5eM6uqEZZlx7mR5SiS" > /target/root/.ssh/authorized_keys; \
  in-target chown --recursive root:root /root/.ssh; \
  in-target chmod 0644 /root/.ssh/authorized_keys; \
  in-target update-alternatives --set editor /usr/bin/vim.basic; \
  echo 'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJEe3gF//znGIzq30frI6O9qDn5eM6uqEZZlx7mR5SiS' > /target/etc/dropbear-initramfs/authorized_keys; \
  echo 'PasswordAuthentication no' >> /target/etc/ssh/sshd_config.d/setup; \
  echo 'PermitRootLogin prohibit-password' >> /etc/ssh/sshd_config.d/setup; \
  echo 'auto eno1' >> /target/etc/network/interfaces; \
  sed -i 's/eth0/eno1/g' /target/etc/network/interfaces; \
  in-target systemctl enable --now sshd; \
  echo 'DROPBEAR_OPTIONS="-I 300 -j -k -p 22 -s -c /bin/cryptroot-unlock"' >> /target/etc/dropbear-initramfs/config; \
  echo 'IP="dhcp"' >> /target/etc/initramfs-tools/initramfs.conf; \
  in-target update-initramfs -u;

#  in-target passwd --expire root; \

RESOLVED !

Solution 1:

I found a way to do it ! Thanks to this post on the opposite problem

I just added two parameters to my boot line in grub.cfg

netcfg/get_hostname=install netcfg/get_domain=install

It is now fully automated and not asking for any question.

Preseeding debian 11 fully unattended (get rid of questions)

Solution 1:

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