133 lines
5.5 KiB
Bash
133 lines
5.5 KiB
Bash
#!/usr/bin/env bash
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# ─────────────────────────────────────────────────────────────
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# Cezen AI Suite — Custom ISO Builder
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# Runs directly on Ubuntu 22.04 (run on the server)
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#
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# Usage:
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# cd ~/aipackage
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# bash autoinstall/build-iso.sh
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#
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# Output: ~/aipackage/autoinstall/cezen-ai-ubuntu2204.iso
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# Then copy the ISO to a USB stick or burn it.
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# ─────────────────────────────────────────────────────────────
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set -e
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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WORK_DIR="/tmp/cezen-iso-work"
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ORIGINAL_ISO="/tmp/ubuntu-22.04.5-live-server-amd64.iso"
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OUTPUT_ISO="$SCRIPT_DIR/cezen-ai-ubuntu2204.iso"
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UBUNTU_URL="https://releases.ubuntu.com/22.04.5/ubuntu-22.04.5-live-server-amd64.iso"
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echo "╔══════════════════════════════════════════╗"
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echo "║ Cezen AI — ISO Builder ║"
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echo "╚══════════════════════════════════════════╝"
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echo ""
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# ── Install build tools ────────────────────────
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echo "→ Installing build tools..."
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apt-get update -qq
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apt-get install -y -qq xorriso wget isolinux
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echo "✓ Tools ready"
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# ── Download Ubuntu ISO ────────────────────────
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if [ -f "$ORIGINAL_ISO" ]; then
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echo "✓ Ubuntu ISO already downloaded"
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else
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echo "→ Downloading Ubuntu 22.04.5 Server ISO (~1.8 GB)..."
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wget --show-progress -O "$ORIGINAL_ISO" "$UBUNTU_URL"
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echo "✓ Downloaded"
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fi
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# ── Extract ISO ────────────────────────────────
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echo "→ Extracting ISO..."
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rm -rf "$WORK_DIR"
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mkdir -p "$WORK_DIR"
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xorriso -osirrox on \
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-indev "$ORIGINAL_ISO" \
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-extract / "$WORK_DIR" 2>/dev/null
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chmod -R u+w "$WORK_DIR"
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echo "✓ Extracted"
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# ── Inject autoinstall files ───────────────────
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echo "→ Injecting autoinstall config..."
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mkdir -p "$WORK_DIR/nocloud"
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cp "$SCRIPT_DIR/user-data" "$WORK_DIR/nocloud/user-data"
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cp "$SCRIPT_DIR/meta-data" "$WORK_DIR/nocloud/meta-data"
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echo "✓ user-data and meta-data injected"
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# ── Patch GRUB ────────────────────────────────
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echo "→ Patching GRUB config..."
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GRUB_CFG="$WORK_DIR/boot/grub/grub.cfg"
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cp "$GRUB_CFG" "$GRUB_CFG.orig"
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# Set 5 second countdown then auto-install
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sed -i "s/set timeout=.*/set timeout=5/" "$GRUB_CFG"
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sed -i "s/set timeout_style=.*/set timeout_style=countdown/" "$GRUB_CFG"
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# Add autoinstall params BEFORE the '---' separator on the kernel line.
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# Anything after '---' in a GRUB linux line goes to init, not the kernel.
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# So 'autoinstall' and 'ds=' must be inserted BEFORE '---'.
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# Semicolon is backslash-escaped so GRUB doesn't treat it as a command separator.
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sed -i "/^\s*linux.*vmlinuz/s/---/autoinstall ds=nocloud\\;s=\/cdrom\/nocloud\/ ---/" "$GRUB_CFG"
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echo "✓ GRUB patched"
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# ── Extract MBR and EFI partition from original ISO ────
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echo "→ Extracting boot data from original ISO..."
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MBR_TEMPLATE=$(mktemp)
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EFI_IMG=$(mktemp)
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dd if="$ORIGINAL_ISO" bs=1 count=432 of="$MBR_TEMPLATE" 2>/dev/null
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# Find EFI partition (partition 2) start and size in 512-byte sectors
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EFI_LINE=$(fdisk -l "$ORIGINAL_ISO" 2>/dev/null | grep "EFI")
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echo " EFI partition info: $EFI_LINE"
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EFI_START=$(echo "$EFI_LINE" | awk '{print $2}')
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EFI_SIZE=$(echo "$EFI_LINE" | awk '{print $4}')
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if [ -z "$EFI_START" ] || [ -z "$EFI_SIZE" ]; then
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echo "ERROR: Could not detect EFI partition in ISO."
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echo "Run: fdisk -l $ORIGINAL_ISO"
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exit 1
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fi
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dd if="$ORIGINAL_ISO" bs=512 skip="$EFI_START" count="$EFI_SIZE" \
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of="$EFI_IMG" 2>/dev/null
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echo "✓ EFI partition extracted (start=$EFI_START, size=$EFI_SIZE)"
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# ── Repack ISO ─────────────────────────────────
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echo "→ Repacking ISO (this takes ~2 minutes)..."
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xorriso -as mkisofs \
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-r \
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-V "Cezen_AI_Ubuntu2204" \
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-o "$OUTPUT_ISO" \
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--grub2-mbr "$MBR_TEMPLATE" \
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-partition_offset 16 \
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--mbr-force-bootable \
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-append_partition 2 28732ac11ff8d211ba4b00a0c93ec93b "$EFI_IMG" \
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-appended_part_as_gpt \
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-iso_mbr_part_type a2a0d0ebe5b9334487c068b6b72699c7 \
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-c "/boot.catalog" \
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-b "/boot/grub/i386-pc/eltorito.img" \
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-no-emul-boot \
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-boot-load-size 4 \
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-boot-info-table \
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--grub2-boot-info \
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-eltorito-alt-boot \
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-e "--interval:appended_partition_2:::" \
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-no-emul-boot \
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"$WORK_DIR"
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echo ""
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echo "╔══════════════════════════════════════════════════════╗"
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echo "║ Done! ║"
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echo "╚══════════════════════════════════════════════════════╝"
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echo ""
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ls -lh "$OUTPUT_ISO"
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echo ""
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echo "→ Copy to your MacBook:"
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echo " scp user@172.16.10.180:~/aipackage/autoinstall/cezen-ai-ubuntu2204.iso ."
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echo ""
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echo "→ Flash to USB on MacBook:"
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echo " diskutil list # find USB e.g. /dev/disk4"
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echo " diskutil unmountDisk /dev/disk4"
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echo " sudo dd if=cezen-ai-ubuntu2204.iso of=/dev/disk4 bs=4m status=progress"
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