312 lines
8.2 KiB
Bash
Executable File
312 lines
8.2 KiB
Bash
Executable File
#!/bin/bash
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# Ce script est une base qu’il faut sûrement améliorer.
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# Il sert à installer un debian d’ordi portable JC pour le cluster SHLAGO
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# Le but est d’installer juste ce qu’il faut pour le le serveur tourne, le reste est laissé à ansible.
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# Il génère une clé SSH qui permettra d’accéder à la machine. C’est peut-être con, il faudrait plutôt le remplir de nos ssh publiques.
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# https://github.com/adrianamaglio/driglibash
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declare -A usage
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declare -A varia
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export driglibash_run_retry=true
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version="alpha nightly 0.0.1 pre-release unstable"
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summary="$0 [options]"
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usage[m]="Path of the temporar mount point"
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varia[m]=mnt
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mnt="temporary_mount_point"
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usage[a]="The architecture of installed system as supported by debootstrap"
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varia[a]=arch
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arch="amd64"
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usage[r]="The release of installed system as supported by debootstrap"
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varia[r]=release
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release="bullseye"
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usage[s]="Source repository of installed system"
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varia[s]=repo
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#repo=
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repo="http://ftp.fr.debian.org/debian"
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#repo="http://localhost:3142/ftp.fr.debian.org/debian"
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usage[S]="Additional sources to add in source.list. Newline separated."
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varia[S]=repos
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repos="deb http://ftp.fr.debian.org/debian stable main contrib non-free"
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usage[n]="The hostname"
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varia[n]=hostname
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hostname=""
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usage[b]="The device where grub will be installed"
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varia[b]=boot_device
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boot_device=
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usage[B]="Boot partition"
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varia[B]=boot_part
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boot_part=
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usage[R]="The device where the system will be installed"
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varia[R]=root_device
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root_device=
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usage[l]="System locale"
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varia[l]=locale
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locale="en_US.UTF-8 UTF-8\nfr_FR.UTF-8 UTF-8"
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usage[w]="Wireguard IP last number (4 for 1.2.3.4)"
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varia[w]=wireguard_number
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wireguard_number=
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usage[J]="Just mount and chroot it. No installation"
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varia[J]=just_mount
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just_mount=false
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usage[i]="Packages to install. space separated"
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varia[i]=install
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install=
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usage[u]="Install grub as UEFI (not working)"
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varia[u]=uefi
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uefi=false
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usage[I]="Interractive mode. Ask questions if needed."
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varia[I]=interractive
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interractive=false
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. driglibash-args
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secret_dir=secrets
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secret_dir="$(realpath -m "$secret_dir/$hostname")"
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install="$install linux-image-amd64 console-data grub2 locales vim openssh-server git nginx smartmontools tcpdump netcat-openbsd wireguard"
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debootstrap_done_marker="$mnt/etc/debootstrap_done"
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uefi_mountpoint=/boot/efi
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###############################################################################
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# Actual script
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###############################################################################
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chroot_run(){
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run chroot "$mnt" $@
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if [ "$?" -ne 0 ] && [ "$?" != '0' ] ; then
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die "Error, chroot command [$@] exited with code '$?'"
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fi
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}
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wait_for_user(){
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section "Time for a pause"
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run echo "Press 'Enter' to continue"
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read
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}
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mount_misc(){
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run mkdir -p "$mnt"/{proc,dev,sys}
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run mount -t proc /proc "$mnt/proc"
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#clean "umount '$(realpath "$mnt/proc")'"
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# To access physical devices
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run mount --rbind --make-rslave /dev "$mnt/dev"
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# even explicitly mounting /dev/pts makes apt cry for its absence…
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#clean "umount -R '$(realpath "$mnt/dev")'"
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run mount --rbind --make-rslave /sys "$mnt/sys"
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#clean "umount -R '$(realpath "$mnt/sys")'"
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if "$uefi" ; then
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run mkdir -p "$mnt$uefi_mountpoint"
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run mount "$boot_device" "$mnt$uefi_mountpoint"
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fi
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clean "umount -R '$mnt'"
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}
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if [ -z "$hostname" ] ; then
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die "Hostname arg needed"
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fi
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root_or_die
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section "Testing for existing secrets"
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if ! [ -d "$secret_dir" ] ; then
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run mkdir -p "$secret_dir"
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run chown -R root:root "$secret_dir"
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run chmod 700 "$secret_dir"
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fi
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section "Mounting additionnal items"
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if [ -n "$(df | grep "$root_device")" ] ; then
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run umount "$root_device"
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fi
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run mkdir -p "$mnt"
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run mount --make-private "$root_device" "$mnt"
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# bug in driglibash-base. If $mnt got spaces it breaks
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if [ -n "$boot_part" ] ; then
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run mkdir -p "$mnt/boot"
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run mount "$boot_part" "$mnt/boot"
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fi
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clean "umount -R $mnt"
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if [ "$just_mount" != false ] ; then
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echo 'Mounted. Exit shell to unmount.'
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chroot_run
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die 'You asked to just mount then exit.'
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fi
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section "debootstraping"
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if [ ! -f "$debootstrap_done_marker" ] ; then
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# Debootstrap may fail when the target is an existing system
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if [ -n "$(ls -A $mnt | grep -vi -e 'lost+found' -e boot)" ]; then
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yell "Root dir '$mnt' is not empty."
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if "$interractive" ; then
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read -p 'Press enter to continue anyway'
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else
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die "Won’t debootstrap it. Is this installation broken?"
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fi
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fi
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run debootstrap --verbose --arch "$arch" "$release" "$mnt" "$repo"
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touch "$debootstrap_done_marker"
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else
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yell "Already done"
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fi
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mount_misc
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section "Installing selected software"
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echo "$repos" >> "$mnt/etc/apt/sources.list"
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run chroot "$mnt" <<EOF
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export DEBIAN_FRONTEND=noninteractive
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apt-get update -q -y
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apt-get install -q -y $install
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EOF
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# TODO watershed ?
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section "Generating locales"
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echo -e "$locale" > "$mnt/etc/locale.gen"
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chroot_run locale-gen
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section "Configuring new system"
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uuid=$(blkid | grep "$root_device" | cut -d ' ' -f 2)
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line_in_file "$uuid / ext4 errors=remount-ro 0 1" "$mnt/etc/fstab"
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line_in_file "proc /proc proc defaults" "$mnt/etc/fstab"
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# TODO set noauto to /boot if needed
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# Set hostname
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run echo "$hostname" > "$mnt/etc/hostname"
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# Fix path and remove noisy beep
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run cat > "$mnt/root/.bashrc" <<EOF
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PATH=$PATH:/usr/bin:/bin:/sbin:/usr/sbin:/sbin
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/usr/bin/setterm -blength 0
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EOF
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# Be sure this fucking beep is gone
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echo 'set bell-style none' >> "$mnt/etc/inputrc"
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# TODO find a third method to kill this doomed beep
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# boot crypted
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#section "Installing cryptsetup in initramfs"
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#run echo 'CRYPTSETUP=y' >> /etc/cryptsetup-initramfs/conf-hook
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#run cp key "$mnt/root/"
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#run echo 'FILES="/root/key"' >> /etc/initramfs-tools/initramfs.conf
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#run update-initramfs -ut
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#echo "$mnt/etc/initramfs-tools/conf.d/cryptsetup" <<EOF
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## This will setup non-us keyboards in early userspace,
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## necessary for punching in passphrases.
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#KEYMAP=y
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#
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## force busybox and cryptsetup on initramfs
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#BUSYBOX=y
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#CRYPTSETUP=y
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#
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## and for systems using plymouth instead, use the new option
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#FRAMEBUFFER=y
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#EOF
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#echo 'export CRYPTSETUP=y' >> "$mnt/etc/environment"
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#echo 'export FILES="./key"' >> "$mnt/etc/initramfs-tools/initramfs.conf"
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#chroot_run 'update-initramfs -ut'
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section "Set up networking"
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# Disable the unpredictable naming (since we are not on the future host)
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if [ ! -L "$mnt/etc/udev/rules.d/80-net-setup-link.rules" ] ; then
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run ln -s /dev/null "$mnt/etc/udev/rules.d/80-net-setup-link.rules"
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fi
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run cat >> "$mnt/etc/network/interfaces" <<EOF
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allow-hotplug eth0
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iface eth0 inet dhcp
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EOF
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#iface eth0 inet6 dhcp
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# TODO add dyndn service
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section "Creating root SSH key to connect"
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if [ -n "$(ls -A $secret_dir)" ]; then
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#die "Secret dir '$secret_dir' is not empty"
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yell "Secret dir is not empty. May erase key."
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fi
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run export HOSTNAME="$hostname" && ssh-keygen -b 4096 -f "$secret_dir/id_rsa" -P ''
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run mkdir -p "$mnt/root/.ssh/"
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cat "$secret_dir/id_rsa.pub" >> "$mnt/root/.ssh/authorized_keys"
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chroot_run systemctl enable ssh
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section "Creating wireguard conf"
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if [ -n "$wireguard_number" ] ; then
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run cat >> "$mnt/etc/wireguard/jeancloud.conf" <<EOF
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[Interface]
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PrivateKey = $(wg genkey)
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ListenPort = 51812
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Address = 10.98.1.$wireguard_number/32
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[Peer] # debug
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PublicKey = OpENQI1ElPuVdNssMySffO8iZEyJsOaSQ9bQLU6Uz2E=
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AllowedIPs = 10.98.1.254/32
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Endpoint = 193.33.56.94:51812
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PersistentKeepalive = 25
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EOF
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wireguard_pubkey="$(cat "$mnt/etc/wireguard/jeancloud.conf" | grep -oP '^PrivateKey = \K.*' | wg pubkey)"
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run cat > "$secret_dir/wg_conf_part" <<EOF
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[Peer] # $hostname
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PublicKey = $wireguard_pubkey
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AllowedIPs = 10.98.1.$wireguard_number/32
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EOF
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chroot_run systemctl enable wg-quick@jeancloud.service
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else
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yell "Passing"
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fi
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section "Installing grub"
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# Disable predictable interfaces name since we are not on the target host
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run sed -i 's/GRUB_CMDLINE_LINUX=""/GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"/g' "$mnt/etc/default/grub"
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chroot_run update-grub
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if $uefi ; then
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chroot_run grub-install --efi-directory="$uefi_mountpoint" --recheck "$boot_device"
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else
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chroot_run grub-install --recheck "$boot_device"
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fi
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if [ "$arg_test" != "false" ] ; then
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section "Testing installed system"
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run qemu-system-x86_64 -m 1024M "$boot_device"
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fi
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echo "To test the system with qemu type:"
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echo "qemu-system-x86_64 -m 1024M '$boot_device'"
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clean
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