Primitive ubuntu setup with debootstrap

chroot.sh

#!/usr/bin/env bash

export PROVISION_USER="provision"
export SYSTEM_FQDN="example.local"
export SYSTEM_NAME="example"
export TIMEZONE="Europe/Budapest"

export EFI_PART_NUM="1"
export BOOT_PART_NUM="2"
export DATA_PART_NUM="3"

# THIS SCRIPT IS INCOMPLETE!
# You have to run this by hand.

apt-get update && \
apt-get dist-upgrade -y && \

apt-get install -y \
    vim openssh-server \
    lvm2 xfsprogs \
    efibootmgr \
    man rsync pciutils \
    linux-image-generic linux-headers-generic grub-efi

useradd "${PROVISION_USER}" -s /bin/bash -m
usermod -aG sudo "${PROVISION_USER}"

##########################
# REPLACE THIS PASSWORD! #
##########################
echo "Password not changed" && exit 1
echo "${PROVISION_USER}:testpasswd" | chpasswd 
##########################
# REPLACE THIS PASSWORD! #
##########################

cat >/etc/netplan/50-default.yaml <<EOF
network:
  version: 2
  renderer: networkd
  ethernets:
    eno1:
      dhcp4: true
EOF

locale-gen en_US
locale-gen en_US.UTF-8
update-locale
echo "${SYSTEM_FQDN}" > /etc/hostname
echo "127.0.0.1 ${SYSTEM_NAME} ${SYSTEM_FQDN}" >> /etc/hosts 
echo "${TIMEZONE}" > /etc/timezone

# This is a manual step
blkid | egrep '(sda)|(insert your volume group name here)'

UUID="insert root fs uuid" / xfs defaults 0 1
UUID="insert boot fs uuid" /boot vfat     defaults        0       0
UUID="insert home fs uuid" /home xfs defaults 0 0

mount -t efivarfs efivarfs /sys/firmware/efi/efivars

# needed for some systems
efibootmgr -c -d /dev/sda -p 2 -l '\EFI\ubuntu\grubx64.efi' -L "Windows Boot Manager"

grub-install \
    --target=x86_64-efi \
    --efi-directory=/boot \
    --bootloader-id=ubuntu \
    --recheck \
    --debug \
    /dev/sda1

efibootmgr -c -d /dev/sda -p "${EFI_PART_NUM}" -l '\EFI\ubuntu\grubx64.efi' -L "Windows Boot Manager"

update-initramfs -k all -c

update-grub

setup.sh

#!/usr/bin/env bash

export TARGET_DISK="/dev/sda"

export TARGET_DIR="/mnt/target/"
export TMPFS_DIR="${TARGET_DIR}"

export EFI_PART_NUM="1"
export BOOT_PART_NUM="2"
export DATA_PART_NUM="3"

export ARCH="amd64"
export RELEASE="bionic"

export SYSTEM="example"
export PREFIX="e"

# _h = host disk, the root/whatever
export LVM_PREFIX="${PREFIX}_h"

apt-get update
apt-get install -y debootstrap vim

mkdir $TARGET_DIR $TMPFS_DIR

mount tmpfs -t tmpfs -o size=6G $TMPFS_DIR

parted $TARGET_DISK <<EOF
mklabel gpt
mkpart ESP fat32 1MiB 2MiB
name 1 grub
set 1 bios_grub on
mkpart primary ext2 2MiB 1GiB
name 2 boot
set 2 boot on
mkpart primary xfs 1GiB 100%
name 3 bernoulli
set 3 lvm on
set 1 boot off
quit
EOF

pvcreate "${TARGET_DISK}${DATA_PART_NUM}"
vgcreate "${LVM_PREFIX}_vg00" "${TARGET_DISK}${DATA_PART_NUM}"
lvcreate -L 8G -n root "${LVM_PREFIX}_vg00"
lvcreate -L 8G -n home "${LVM_PREFIX}_vg00"
mkfs.xfs "/dev/mapper/${LVM_PREFIX}_vg00-root" 
mkfs.xfs "/dev/mapper/${LVM_PREFIX}_vg00-home"

mkfs.fat -F 32 "${TARGET_DISK}${EFI_PART_NUM}"

mkdir "${TARGET_DIR}"
mount "/dev/mapper/${LVM_PREFIX}_vg00-root" "${TARGET_DIR}"

mkdir "${TARGET_DIR}/home"
mount "/dev/mapper/${LVM_PREFIX}_vg00-home" "${TARGET_DIR}/home"

mkdir "${TARGET_DIR}/boot/"
mount "${TARGET_DISK}${EFI_PART_NUM}" "${TARGET_DIR}/boot"

debootstrap --arch $ARCH $RELEASE $TARGET_DIR
mount --bind /dev "${TARGET_DIR}dev"
mount -t devpts /dev/pts "${TARGET_DIR}dev/pts"
mount -t proc proc "${TARGET_DIR}proc"
mount -t sysfs sysfs "${TARGET_DIR}sys"
mount -t tmpfs tmpfs "${TARGET_DIR}tmp"

echo 'deb http://security.ubuntu.com/ubuntu bionic-security main' >> "${TARGET_DIR}/etc/apt/sources.list"

chroot "${TMPFS_DIR}" bin/bash 
export PS1="(chroot) ${PS1}"


umount -lr "${TARGET_DIR}"
vgchange -an "${LVM_PREFIX}_vg00"