140 lines
4.3 KiB
Bash
140 lines
4.3 KiB
Bash
#!/bin/bash
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set -e # Exit on error
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DEVICE=$1
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[[ -z "${DEVICE}" ]] && echo "Usage $0 /dev/sdX" && exit 1
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udevadm info -n ${DEVICE} -q property
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echo "Selected device is ${DEVICE}"
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read -p "[Press enter to continue or CTRL+C to stop]"
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echo "Umount ${DEVICE}"
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umount ${DEVICE}* || true
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echo "Set partition table to GPT (UEFI)"
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parted ${DEVICE} --script mktable gpt
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echo "Create EFI partition"
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parted ${DEVICE} --script mkpart EFI fat16 1MiB 10MiB
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parted ${DEVICE} --script set 1 msftdata on
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echo "Create OS partition"
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parted ${DEVICE} --script mkpart LINUX btrfs 10MiB 4GiB
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echo "Format partitions"
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mkfs.vfat -n EFI ${DEVICE}1
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mkfs.btrfs -f -L LINUX ${DEVICE}2
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ROOTFS_UUID=$(btrfs filesystem show ${DEVICE}2 | grep -Po "uuid: [a-f0-9-]+"|cut -c 7-44)
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if [[ -z ${ROOTFS_UUID} ]]; then
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echo "Rootfs UUID is <<${ROOTFS_UUID}>>"
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echo "WARNING! BUG! The UUID is not set in the fstab. Either because this command failed (empty UUID above) or because of chroot scoping. Please fix it."
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echo "Your OS will still be able to boot normally and remount the filesystem as RW but it could crash some apps like fsck"
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read -p "[Press enter to continue or CTRL+C to stop]"
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fi
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echo "Mount OS partition"
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ROOTFS="/tmp/installing-rootfs"
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mkdir -p ${ROOTFS}
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mount ${DEVICE}2 ${ROOTFS}
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echo "Debootstrap system"
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debootstrap --variant=minbase --arch amd64 buster ${ROOTFS} http://deb.debian.org/debian/
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echo "Mount EFI partition"
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mkdir -p ${ROOTFS}/boot/efi
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mount ${DEVICE}1 ${ROOTFS}/boot/efi
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echo "Get ready for chroot"
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mount --bind /dev ${ROOTFS}/dev
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mount -t devpts /dev/pts ${ROOTFS}/dev/pts
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mount -t proc proc ${ROOTFS}/proc
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mount -t sysfs sysfs ${ROOTFS}/sys
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mount -t tmpfs tmpfs ${ROOTFS}/tmp
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echo "Entering chroot, installing Linux kernel and Grub"
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cat << EOF | chroot ${ROOTFS}
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set -e
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export HOME=/root
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export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/sbin
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export DEBIAN_FRONTEND=noninteractive
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debconf-set-selections <<< "grub-efi-amd64 grub2/update_nvram boolean false"
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apt-get remove -y grub-efi grub-efi-amd64
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apt-get update
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apt-get install -y linux-image-generic linux-headers-generic grub-efi
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grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=debian --recheck --no-nvram --removable
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update-grub
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EOF
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echo "Install script based on dd"
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cat << 'EOF' > ${ROOTFS}/usr/local/sbin/os-install
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#!/bin/bash
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set -e
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SOURCE=$1
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TARGET=$2
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# We write partitions until 4GiB = 4 * 1024^3 (https://en.wikipedia.org/wiki/Gibibyte)
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# In dd, M means 1048576 bytes = 1024^2 (man dd)
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# So we need to copy (4 * 1024^3) / (4 * 1024^2) = 0.5 * 1024 = 1024 blocks
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dd if=${SOURCE} of=${TARGET} bs=4M status=progress count=1030
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growpart ${TARGET} 2
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mount ${TARGET}2 /mnt
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btrfs filesystem resize max /mnt
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umount /mnt
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echo "you might want to run: btrfstune -u ${TARGET}2 but you will need to update the fstab"
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echo "you might want to change systemd machine UUID"
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echo "you might want to change /etc/systemd/network/en.network configuration"
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EOF
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chmod +x ${ROOTFS}/usr/local/sbin/os-install
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echo "Entering chroot (bis), installing daemon"
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cat << EOF | chroot ${ROOTFS}
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set -e
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export HOME=/root
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export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/sbin
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export DEBIAN_FRONTEND=noninteractive
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# Set fstab
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echo "UUID=${ROOTFS_UUID} / btrfs defaults 0 0" > /etc/fstab
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# Install systemd and OpenSSH
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apt-get update
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apt-get install -y systemd openssh-server sudo btrfs-tools cloud-utils python
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systemctl enable ssh
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# Enable systemd services
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systemctl enable systemd-networkd systemd-timesyncd systemd-resolved
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# Listen on any ethernet interface for DHCP
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tee /etc/systemd/network/en.network << EOG
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[Match]
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Name=en*
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[Network]
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DHCP=ipv4
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EOG
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# Add SSH keys
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mkdir -p /root/.ssh
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tee /root/.ssh/authorized_keys << EOG
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ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDT1+H08FdUSvdPpPKdcafq4+JRHvFVjfvG5Id97LAoROmFRUb/ZOMTLdNuD7FqvW0Da5CPxIMr8ZxfrFLtpGyuG7qdI030iIRZPlKpBh37epZHaV+l9F4ZwJQMIBO9cuyLPXgsyvM/s7tDtrdK1k7JTf2EVvoirrjSzBaMhAnhi7//to8zvujDtgDZzy6aby75bAaDetlYPBq2brWehtrf9yDDG9WAMYJqp//scje/WmhbRR6eSdim1HaUcWk5+4ZPt8sQJcy8iWxQ4jtgjqTvMOe5v8ZPkxJNBine/ZKoJsv7FzKem00xEH7opzktaGukyEqH0VwOwKhmBiqsX2yN quentin@dufour.io
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EOG
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echo "Done"
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EOF
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echo "Unmounting filesystems"
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umount ${ROOTFS}/dev/pts
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umount ${ROOTFS}/dev
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umount ${ROOTFS}/proc
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umount ${ROOTFS}/sys
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umount ${ROOTFS}/tmp
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umount ${ROOTFS}/boot/efi
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umount ${ROOTFS}
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echo "Done"
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