From 6422080d6855f1c19fcb155b7277d11af4cd6499 Mon Sep 17 00:00:00 2001 From: coesensbert Date: Thu, 5 Dec 2024 12:42:13 +0100 Subject: [PATCH] zos on hetzner dedicated server by Jan --- zos-on-hetzner.sh | 210 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 210 insertions(+) create mode 100644 zos-on-hetzner.sh diff --git a/zos-on-hetzner.sh b/zos-on-hetzner.sh new file mode 100644 index 0000000..4abe727 --- /dev/null +++ b/zos-on-hetzner.sh @@ -0,0 +1,210 @@ +#!/bin/bash + +# This was I input to o1-preview with this prompt: +# +# BLOCKDEV=nvme0n1 +# wipefs -a -f /dev/${BLOCKDEV} +# parted -s /dev/${BLOCKDEV} "mklabel gpt mkpart zosboot fat32 1 10M set 1 esp on mkpart zoscache btrfs 10M 100%" +# mkfs.vfat -F32 /dev/${BLOCKDEV}p1 +# mkfs.btrfs -f /dev/${BLOCKDEV}p2 +# mkdir zospxe && mount /dev/${BLOCKDEV}p1 -t vfat zospxe && mkdir -p zospxe/efi/boot +# wget -q https://bootstrap.grid.tf/uefi/prod/1234 -O zospxe/efi/boot/BOOTX64.EFI +# +# find a BLOCKDEV that is at least an nvme, ssd (in that order) +# and make this script a bit more log-expressive, and failing gracefully. +# Also, can you add the if -d $device is specified, it will use that and +# not search for a disk, and also make farmerid a parameter +# for https://bootstrap.grid.tf/uefi/prod/$farmerid} + +# Exit immediately if a command exits with a non-zero status. +set -e + +# Function to log messages with timestamps +log() { + echo "$(date '+%F %T') - $@" +} + +# Function to display usage information +usage() { + echo "Usage: $0 [-d DEVICE] [-f FARMERID]" + echo " -d, --device DEVICE Specify the block device to use (e.g., sda, nvme0n1)." + echo " -f, --farmerid FARMERID Specify the farmer ID for the download URL." + echo " -h, --help Display this help message." + exit 1 +} + +# Function to find a suitable block device +find_blockdev() { + # Minimum size in bytes (e.g., 10 GiB) + MIN_SIZE=$((10 * 1024 * 1024 * 1024)) + + # First try NVMe devices + log "Searching for NVMe devices..." + for DEV in /dev/nvme*n1; do + if [ -b "$DEV" ]; then + SIZE_BYTES=$(blockdev --getsize64 "$DEV") + if [ "$SIZE_BYTES" -ge "$MIN_SIZE" ]; then + log "Found NVMe device: $DEV ($(numfmt --to=iec $SIZE_BYTES))" + BLOCKDEV="${DEV##*/}" + return 0 + else + log "$DEV is smaller than $(numfmt --to=iec $MIN_SIZE). Skipping." + fi + fi + done + + log "No suitable NVMe devices found. Searching for SSD devices..." + + for DEV_PATH in /sys/block/*; do + DEV_NAME=$(basename "$DEV_PATH") + # Exclude unwanted devices + case "$DEV_NAME" in + loop* | ram* | sr* | fd* | md* | dm-*) + continue + ;; + esac + DEVICE="/dev/$DEV_NAME" + if [ -b "$DEVICE" ] && [ "$(cat /sys/block/${DEV_NAME}/queue/rotational)" == "0" ]; then + SIZE_BYTES=$(blockdev --getsize64 "$DEVICE") + if [ "$SIZE_BYTES" -ge "$MIN_SIZE" ]; then + log "Found SSD device: $DEVICE ($(numfmt --to=iec $SIZE_BYTES))" + BLOCKDEV="$DEV_NAME" + return 0 + else + log "$DEVICE is smaller than $(numfmt --to=iec $MIN_SIZE). Skipping." + fi + fi + done + + log "No suitable block devices found." + return 1 +} + +# Main script execution +main() { + # Default values + BLOCKDEV_SPECIFIED="" + FARMERID="1234" # Default farmer ID + + # Parse command-line arguments + while [[ $# -gt 0 ]]; do + case "$1" in + -d | --device) + shift + if [ -z "$1" ]; then + log "Error: '--device' requires a non-empty option argument." + usage + fi + BLOCKDEV_SPECIFIED="$1" + shift + ;; + -f | --farmerid) + shift + if [ -z "$1" ]; then + log "Error: '--farmerid' requires a non-empty option argument." + usage + fi + FARMERID="$1" + shift + ;; + -h | --help) + usage + ;; + *) + log "Error: Unknown option: $1" + usage + ;; + esac + done + + if [ -n "$BLOCKDEV_SPECIFIED" ]; then + # Use the specified block device + if [[ "$BLOCKDEV_SPECIFIED" != /dev/* ]]; then + BLOCKDEV_SPECIFIED="/dev/$BLOCKDEV_SPECIFIED" + fi + if [ ! -b "$BLOCKDEV_SPECIFIED" ]; then + log "Error: Specified device $BLOCKDEV_SPECIFIED does not exist or is not a block device." + exit 1 + fi + BLOCKDEV="${BLOCKDEV_SPECIFIED##*/}" + log "Using specified block device: $BLOCKDEV_SPECIFIED" + else + # Find a suitable block device + if ! find_blockdev; then + log "Error: No suitable block device found." + exit 1 + fi + log "Selected block device: /dev/${BLOCKDEV}" + fi + + # Confirm with the user before proceeding + read -p "This will erase all data on /dev/${BLOCKDEV}. Are you sure you want to proceed? (yes/[no]): " CONFIRM + if [ "$CONFIRM" != "yes" ]; then + log "Operation cancelled by user." + exit 0 + fi + + # Determine partition naming convention + if [[ $BLOCKDEV =~ [0-9]$ ]]; then + PARTPREFIX="${BLOCKDEV}p" + else + PARTPREFIX="${BLOCKDEV}" + fi + + # Wipe filesystem signatures + log "Wiping filesystem signatures on /dev/${BLOCKDEV}..." + wipefs -a -f /dev/${BLOCKDEV} + + # Create GPT partition table + log "Creating GPT partition table on /dev/${BLOCKDEV}..." + parted -s /dev/${BLOCKDEV} mklabel gpt + + # Create partitions + log "Creating partition 1 (zosboot) on /dev/${BLOCKDEV}..." + parted -s /dev/${BLOCKDEV} mkpart zosboot fat32 1MiB 10MiB + + log "Setting partition 1 as ESP..." + parted -s /dev/${BLOCKDEV} set 1 esp on + + log "Creating partition 2 (zos-cache) on /dev/${BLOCKDEV}..." + parted -s /dev/${BLOCKDEV} mkpart zos-cache btrfs 10MiB 100% + + # Format partitions + log "Formatting /dev/${PARTPREFIX}1 as FAT32..." + mkfs.vfat -F32 /dev/${PARTPREFIX}1 + + log "Formatting /dev/${PARTPREFIX}2 as BTRFS..." + mkfs.btrfs -f /dev/${PARTPREFIX}2 + + # Mount and prepare directories + MOUNT_POINT="zospxe" + log "Creating mount point at ./${MOUNT_POINT}..." + mkdir -p "${MOUNT_POINT}" + log "Mounting /dev/${PARTPREFIX}1 to ./${MOUNT_POINT}..." + mount /dev/${PARTPREFIX}1 "${MOUNT_POINT}" + log "Creating directory structure in ${MOUNT_POINT}..." + mkdir -p "${MOUNT_POINT}/efi/boot" + + # Download the required BOOTX64.EFI file + EFI_FILE_URL="https://bootstrap.grid.tf/uefi/prod/${FARMERID}" + log "Downloading BOOTX64.EFI from ${EFI_FILE_URL}..." + wget -q "${EFI_FILE_URL}" -O "${MOUNT_POINT}/efi/boot/BOOTX64.EFI" + + # Create zos-cache subvolume + log "Creating mount point at ./${MOUNT_POINT}root..." + mkdir -p "${MOUNT_POINT}root" + log "Mounting /dev/${PARTPREFIX}2 to ./${MOUNT_POINT}root..." + mount /dev/${PARTPREFIX}2 "${MOUNT_POINT}root" + log "Creating subvolume \"zos-cache\" on ${MOUNT_POINT}root" + btrfs subvolume create ${MOUNT_POINT}root/zos-cache + + # Umount mountpoints + log "Umounting ${MOUNT_POINT}/*" + umount -l ${MOUNT_POINT} + umount -l ${MOUNT_POINT}root + + log "Operation completed successfully." +} + +# Execute the main function +main "$@"