Add arch installation script

archInstall.sh

@@ -0,0 +1,211 @@
+#!/bin/bash
+function checkVariables {
+  if [[ -z $DISK ]]; then
+    printf "System drive (DISK) is not set\n"
+    exit 99
+  fi
+
+  if [[ -z $HOSTNAME ]]; then
+    printf "Hostname (HOSTNAME) is not set\n"
+    exit 99
+  fi
+
+  if [[ -z $USERNAME ]]; then
+    printf "Username (USERNAME) is not set\n"
+    exit 99
+  fi
+
+  if [[ -z $PASSWORD ]]; then
+    printf "Password (PASSWORD) is not set\n"
+    exit 99
+  fi
+}
+
+function preChrootStep {
+  if [[ $(whoami) != "root" ]]; then
+    printf "This script has to be run as root"
+    exit 1
+  fi
+
+  if ! ls /sys/firmware/efi/efivars > /dev/null 2>&1; then
+    printf "This script can only be run when booted in UEFI mode\n"
+    exit 1
+  fi
+
+  if ! ping -c 1 archlinux.org > /dev/null 2>&1; then
+    printf "Unable to ping archlinux.org, check internet connectivity\n"
+    exit 1
+  fi
+
+  printf "Arch installation\n"
+  read -p "System drive: " DISK
+  read -p "Hostname: " HOSTNAME
+  read -p "Username: " USERNAME
+  PASSWORD=$(openssl passwd -6)
+
+  LOGFILE="archInstall.$(date +%Y%m%d-%H%M%S).log"
+
+  printf "Installing arch on ${DISK}\n" | tee -a $LOGFILE
+
+  BLOCK_INFO=$(lsblk -n --output PATH,TYPE)
+  printf "$BLOCK_INFO" | grep -e " disk$" | grep -e "^${DISK} " > /dev/null 2>&1
+  if (( $? > 0 )); then
+    printf "${DISK} does not seem to be a disk\n" | tee -a $LOGFILE
+    exit 2
+  fi
+
+  if (( $(printf "$BLOCK_INFO" | grep -e " part$" | wc -l) > 0 )); then
+    printf "${DISK} already has several partitions\n" | tee -a $LOGFILE
+    read -p "Do you really wish to continue and erase all partitions? [N/y] " CONTINUE
+    if [[ ! $CONTINUE =~ ^[yY]$ ]]; then
+      printf "Exiting due to user input\n" | tee -a $LOGFILE
+      exit 0
+    fi
+  fi
+
+  printf "Loading keymap\n" | tee -a $LOGFILE
+  loadkeys sv-latin1 || exit $?
+
+  printf "Creating partitions\n" | tee -a $LOGFILE
+  (
+    echo o      # New partition table
+    echo n      # New partition
+    echo p      # Primary partition
+    echo 1      # Partition number
+    echo        # First sector (use default)
+    echo +300M  # Last sector
+    echo n      # New partition
+    echo p      # Primary partition
+    echo 2      # Partition number
+    echo        # First sector (use default)
+    echo        # Last sector (use default)
+    echo w      # Write changes
+  ) | fdisk -W always ${DISK} >> $LOGFILE 2>&1 || exit $?
+
+  BOOTPART="${DISK}1"
+  BTRFSPART="${DISK}2"
+
+  printf "Creating filesystems\n" | tee -a $LOGFILE
+  mkfs.fat ${BOOTPART} >> $LOGFILE 2>&1 || exit $?
+  mkfs.btrfs ${BTRFSPART} >> $LOGFILE 2>&1 || exit $?
+
+  printf "Mounting btrfs partition\n" | tee -a $LOGFILE
+  mount ${BTRFSPART} /mnt >> $LOGFILE 2>&1 || exit $?
+
+  printf "Creating btrfs subvolumes\n" | tee -a $LOGFILE
+  btrfs subvolume create /mnt/@root >> $LOGFILE 2>&1 || exit $?
+  btrfs subvolume create /mnt/@home >> $LOGFILE 2>&1 || exit $?
+  btrfs subvolume create /mnt/@log >> $LOGFILE 2>&1 || exit $?
+  btrfs subvolume create /mnt/@swap >> $LOGFILE 2>&1 || exit $?
+
+  printf "Unmounting btrfs partition\n" | tee -a $LOGFILE
+  umount /mnt >> $LOGFILE 2>&1
+
+  printf "Mounting root\n" | tee -a $LOGFILE
+  mount -o defaults,relatime,compress=zstd,subvol=@root ${BTRFSPART} /mnt >> $LOGFILE 2>&1 || exit $?
+
+  printf "Creating mount directories\n" | tee -a $LOGFILE
+  mkdir -p /mnt/boot/efi /mnt/home /mnt/var/log /mnt/swap >> $LOGFILE 2>&1 || exit $?
+
+  printf "Mounting volumes\n" | tee -a $LOGFILE
+  mount ${BOOTPART} /mnt/boot/efi >> $LOGFILE 2>&1 || exit $?
+  mount ${BTRFSPART} -o defaults,relatime,compress=zstd,subvol=@home /mnt/home >> $LOGFILE 2>&1 || exit $?
+  mount ${BTRFSPART} -o defaults,relatime,compress=zstd,subvol=@log /mnt/var/log >> $LOGFILE 2>&1 || exit $?
+  mount ${BTRFSPART} -o defaults,relatime,compress=zstd,subvol=@swap /mnt/swap >> $LOGFILE 2>&1 || exit $?
+
+  printf "Creating swap file\n" | tee -a $LOGFILE
+  btrfs filesystem mkswapfile --size 8G /mnt/swap/swapfile >> $LOGFILE 2>&1 || exit $?
+  swapon /mnt/swap/swapfile
+
+  PACSTRAPPKGS="base linux linux-firmware btrfs-progs grub efibootmgr networkmanager sudo sed git ansible"
+
+  printf "Checking CPU manufacturer\n" | tee -a $LOGFILE
+  CPU=$(lscpu | grep "^Vendor ID:" | awk '{ print $3 }')
+
+  if [[ ! -z $CPU ]]; then
+    if [[ "$CPU" == "GenuineIntel" ]]; then
+      PACSTRAPPKGS="${PACSTRAPPKGS} intel-ucode"
+    elif [[ "$CPU" == "AuthencticAMD" ]]; then
+      PACSTRAPPKGS="${PACSTRAPPKGS} amd-ucode"
+    fi
+  fi
+
+  printf "Installing base system\n" | tee -a $LOGFILE
+  pacstrap -K /mnt ${PACSTRAPPKGS} >> $LOGFILE 2>&1 || exit $?
+
+  printf "Generate fstab\n" | tee -a $LOGFILE
+  genfstab -U /mnt >> /mnt/etc/fstab || exit $?
+}
+
+function chrootStep {
+  checkVariables
+
+  printf "Setting up time\n"
+  ln -sf /usr/share/zoneinfo/Europe/Stockholm /etc/localtime || exit $?
+  hwclock --systohc || exit $?
+
+  printf "Setting up locale\n"
+  sed -i -e 's/^#\(en_US.UTF-8\)/\1/' /etc/locale.gen || exit $?
+  sed -i -e 's/^#\(sv_SE.UTF-8\)/\1/' /etc/locale.gen || exit $?
+  locale-gen >&2 || exit $?
+
+  echo "LANG=en_US.UTF-8" > /etc/locale.conf
+  echo "LC_TIME=sv_SE.UTF-8" >> /etc/locale.conf
+  echo "KEYMAP=sv-latin1" > /etc/vconsole.conf
+
+  printf "Setting hostname to $HOSTNAME\n"
+  echo "$HOSTNAME" > /etc/hostname
+
+  printf "Add wheel to sudoers\n"
+  echo "%wheel ALL=(ALL) ALL" > /etc/sudoers.d/wheel
+  sed -i -e 's/^#\(%wheel ALL=(ALL) ALL\)/\1/' /etc/sudoers || exit $?
+
+  printf "Creating user\n" | tee -a $LOGFILE
+  useradd -m $USERNAME -G wheel >&2 || exit $?
+  echo "${USERNAME}:${PASSWORD}" | chpasswd -e >&2 || exit $?
+
+  printf "Setting temporary root password\n"
+  echo "root:root" | chpasswd >&2 || exit $?
+
+  printf "Starting and enabling NetworkManager\n"
+  systemctl enable NetworkManager >&2 || exit $?
+  systemctl start NetworkManager >&2 || exit $?
+
+  printf "Installing GRUB\n"
+  grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=GRUB >&2 || exit $?
+  grub-mkconfig -o /boot/grub/grub.cfg >&2 || exit $?
+
+  printf "Exiting chroot\n"
+  exit
+}
+
+function postChrootStep {
+  printf "Cleanup\n" | tee -a $LOGFILE
+  cp $LOGFILE /mnt/$LOGFILE
+  cd /
+  swapoff /mnt/swap/swapfile
+  umount -R /mnt
+}
+
+if [[ $1 == "chroot" ]]; then
+  chrootStep
+  exit
+fi
+
+# Run preChroot operations
+preChrootStep
+
+# Run chroot operations
+printf "Adding install script to mount directory\n" | tee -a $LOGFILE
+cp $0 /mnt/
+
+printf "Chrooting arch\n" | tee -a $LOGFILE
+DISK="${DISK}" HOSTNAME="${HOSTNAME}" USERNAME="${USERNAME}" PASSWORD="${PASSWORD}" arch-chroot /mnt /$(basename $0) chroot 2>> $LOGFILE | tee -a $LOGFILE
+if (( ${PIPESTATUS[0]} > 0 )); then
+  exit ${PIPESTATUS[0]}
+fi
+
+# Run postchroot operations
+postChrootStep
+
+printf "Base installation completed, logfile at $LOGFILE.\nReboot and proceed with goodies.\nRemember to change/deactivate root login\n" | tee -a $LOGFILE