Add autoinstall ISO builder for Cezen AI Suite

2026-06-23 16:11:12 +05:30 · 2026-06-23 16:11:12 +05:30 · 5d9cec4fe8
commit 5d9cec4fe8
parent e472a83901
3 changed files with 237 additions and 0 deletions
--- a/autoinstall/build-iso.sh
+++ b/autoinstall/build-iso.sh
@ -0,0 +1,144 @@
+#!/usr/bin/env bash
+# ─────────────────────────────────────────────────────────────
+# Cezen AI Suite — Custom ISO Builder
+# Runs on macOS using Docker. Produces a bootable USB image.
+#
+# Usage: bash autoinstall/build-iso.sh
+# Output: autoinstall/cezen-ai-ubuntu2204.iso
+#
+# Requirements:
+#   - Docker Desktop running on your MacBook
+#   - ~6 GB free disk space (ISO download + work)
+# ─────────────────────────────────────────────────────────────
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+OUTPUT_ISO="$SCRIPT_DIR/cezen-ai-ubuntu2204.iso"
+UBUNTU_ISO_URL="https://releases.ubuntu.com/22.04.5/ubuntu-22.04.5-live-server-amd64.iso"
+
+echo "╔══════════════════════════════════════════╗"
+echo "║   Cezen AI — ISO Builder                 ║"
+echo "╚══════════════════════════════════════════╝"
+echo ""
+
+# Check Docker is running
+if ! docker info &>/dev/null; then
+  echo "ERROR: Docker is not running. Start Docker Desktop and try again."
+  exit 1
+fi
+echo "✓ Docker is running"
+
+# Check autoinstall files exist
+if [ ! -f "$SCRIPT_DIR/user-data" ] || [ ! -f "$SCRIPT_DIR/meta-data" ]; then
+  echo "ERROR: user-data or meta-data not found in $SCRIPT_DIR"
+  exit 1
+fi
+echo "✓ Autoinstall files found"
+
+echo ""
+echo "→ Building ISO inside Docker container (Ubuntu 22.04)..."
+echo "  This will take 5–15 minutes depending on internet speed."
+echo ""
+
+docker run --rm \
+  -v "$SCRIPT_DIR:/autoinstall" \
+  -v "$REPO_ROOT:/repo" \
+  ubuntu:22.04 \
+  bash -c '
+set -e
+
+# Install tools
+export DEBIAN_FRONTEND=noninteractive
+apt-get update -qq
+apt-get install -y -qq xorriso wget isolinux rsync
+
+WORK_DIR="/tmp/iso-work"
+ORIGINAL_ISO="/tmp/ubuntu-22.04.5-live-server-amd64.iso"
+UBUNTU_URL="https://releases.ubuntu.com/22.04.5/ubuntu-22.04.5-live-server-amd64.iso"
+
+# Download Ubuntu ISO if not already cached
+if [ ! -f "$ORIGINAL_ISO" ]; then
+  echo "→ Downloading Ubuntu 22.04.5 Server ISO (~1.8 GB)..."
+  wget -q --show-progress -O "$ORIGINAL_ISO" "$UBUNTU_URL"
+fi
+echo "✓ Ubuntu ISO ready"
+
+# Extract ISO contents
+echo "→ Extracting ISO..."
+rm -rf "$WORK_DIR"
+mkdir -p "$WORK_DIR"
+xorriso -osirrox on \
+  -indev "$ORIGINAL_ISO" \
+  -extract / "$WORK_DIR" 2>/dev/null
+chmod -R u+w "$WORK_DIR"
+echo "✓ ISO extracted"
+
+# Inject autoinstall files
+echo "→ Injecting autoinstall config..."
+mkdir -p "$WORK_DIR/nocloud"
+cp /autoinstall/user-data "$WORK_DIR/nocloud/user-data"
+cp /autoinstall/meta-data "$WORK_DIR/nocloud/meta-data"
+
+# Modify GRUB to auto-select install with autoinstall
+GRUB_CFG="$WORK_DIR/boot/grub/grub.cfg"
+
+# Backup original
+cp "$GRUB_CFG" "$GRUB_CFG.orig"
+
+# Set default to first entry and zero timeout
+sed -i "s/set timeout=.*/set timeout=5/" "$GRUB_CFG"
+sed -i "s/set timeout_style=.*/set timeout_style=countdown/" "$GRUB_CFG"
+
+# Add autoinstall + nocloud parameters to the first linux line
+# This patches the "Install Ubuntu Server" entry
+sed -i "/^\s*linux.*vmlinuz/s/$/ autoinstall quiet ds=nocloud;s=\/cdrom\/nocloud\//" "$GRUB_CFG"
+
+echo "✓ GRUB config patched"
+
+# Get original ISO metadata for repacking
+MBR_TEMPLATE=$(mktemp)
+dd if="$ORIGINAL_ISO" bs=1 count=432 of="$MBR_TEMPLATE" 2>/dev/null
+
+# Get EFI partition info
+EFI_START=$(fdisk -l "$ORIGINAL_ISO" 2>/dev/null | grep "EFI" | awk "{print \$2}")
+EFI_SIZE=$(fdisk -l "$ORIGINAL_ISO" 2>/dev/null | grep "EFI" | awk "{print \$4}")
+
+echo "→ Repacking ISO..."
+xorriso -as mkisofs \
+  -r \
+  -V "Cezen_AI_Ubuntu2204" \
+  -o /autoinstall/cezen-ai-ubuntu2204.iso \
+  --grub2-mbr "$MBR_TEMPLATE" \
+  -partition_offset 16 \
+  --mbr-force-bootable \
+  -append_partition 2 28732ac11ff8d211ba4b00a0c93ec93b "$WORK_DIR/boot/grub/efi.img" \
+  -appended_part_as_gpt \
+  -iso_mbr_part_type a2a0d0ebe5b9334487c068b6b72699c7 \
+  -c "/boot.catalog" \
+  -b "/boot/grub/i386-pc/eltorito.img" \
+  -no-emul-boot \
+  -boot-load-size 4 \
+  -boot-info-table \
+  --grub2-boot-info \
+  -eltorito-alt-boot \
+  -e "--interval:appended_partition_2_start_${EFI_START}s_size_${EFI_SIZE}s:all::" \
+  -no-emul-boot \
+  -boot-load-size 4 \
+  "$WORK_DIR" 2>/dev/null
+
+echo "✓ ISO built successfully"
+ls -lh /autoinstall/cezen-ai-ubuntu2204.iso
+'
+
+echo ""
+echo "╔══════════════════════════════════════════════════════╗"
+echo "║   ISO built: autoinstall/cezen-ai-ubuntu2204.iso    ║"
+echo "║                                                      ║"
+echo "║   Flash to USB:                                      ║"
+echo "║   sudo dd if=autoinstall/cezen-ai-ubuntu2204.iso \  ║"
+echo "║        of=/dev/diskX bs=4m status=progress           ║"
+echo "║   (replace /dev/diskX with your USB drive)           ║"
+echo "╚══════════════════════════════════════════════════════╝"
+echo ""
+echo "→ To find your USB drive: diskutil list"
--- a/autoinstall/meta-data
+++ b/autoinstall/meta-data
@ -0,0 +1,2 @@
+instance-id: cezen-aiserver
+local-hostname: aiserver
--- a/autoinstall/user-data
+++ b/autoinstall/user-data
@ -0,0 +1,91 @@
+#cloud-config
+autoinstall:
+  version: 1
+
+  # ── Locale & keyboard ──────────────────────────
+  locale: en_IN.UTF-8
+  keyboard:
+    layout: us
+
+  # ── Network: DHCP on first ethernet ───────────
+  network:
+    network:
+      version: 2
+      ethernets:
+        any-en:
+          dhcp4: true
+          match:
+            name: "en*"
+        any-eth:
+          dhcp4: true
+          match:
+            name: "eth*"
+
+  # ── Storage: LVM on largest disk ──────────────
+  storage:
+    layout:
+      name: lvm
+      match:
+        size: largest
+
+  # ── Identity: cezen user ──────────────────────
+  identity:
+    hostname: aiserver
+    username: cezen
+    # Password: Cezen@2024!  (SHA-512 hash below)
+    password: "$6$rounds=4096$cezentech$9pHVUFCvB7mHrblqn0qXJaFWxMkmepNM4T8Q5Fx8piVXuGDq.MLk/RH4nRMWtluLMpPXaZQAGFOD4xtjW1wC1"
+
+  # ── SSH ───────────────────────────────────────
+  ssh:
+    install-server: true
+    allow-pw: true
+
+  # ── Packages installed during setup ───────────
+  packages:
+    - git
+    - curl
+    - wget
+
+  # ── Late commands: run after OS install ───────
+  # These run with target mounted at /target
+  late-commands:
+    # Clone the Cezen AI installer
+    - git clone https://cgit.cezentech.com/jinojose/aipackage.git /target/opt/aipackage
+
+    # Set ownership
+    - curtin in-target -- chown -R cezen:cezen /opt/aipackage
+
+    # Create a firstboot systemd service that runs install.sh on first boot
+    - |
+      cat > /target/etc/systemd/system/cezen-firstboot.service << 'SVCEOF'
+      [Unit]
+      Description=Cezen AI Suite First Boot Installer
+      After=network-online.target
+      Wants=network-online.target
+      ConditionPathExists=!/opt/cezen/.installed
+
+      [Service]
+      Type=oneshot
+      ExecStart=/bin/bash /opt/aipackage/install.sh
+      ExecStartPost=/bin/touch /opt/cezen/.installed
+      RemainAfterExit=yes
+      StandardOutput=journal+console
+      StandardError=journal+console
+
+      [Install]
+      WantedBy=multi-user.target
+      SVCEOF
+
+    # Enable the firstboot service
+    - curtin in-target -- systemctl enable cezen-firstboot.service
+
+    # Allow cezen user to run sudo without password (needed for install.sh)
+    - echo "cezen ALL=(ALL) NOPASSWD:ALL" > /target/etc/sudoers.d/cezen
+    - chmod 440 /target/etc/sudoers.d/cezen
+
+  # ── Skip confirmations ────────────────────────
+  user-data:
+    disable_root: false
+
+  # Confirm destructive action without prompting
+  confirm-bugs: false