cloudvirtbox.sh

#!/usr/bin/env bash

set -e

# Configuration Variables
VM_NAME="VM1"
CPU_CORES="2"
RAM_SIZE="2048"       # VirtualBox requires RAM in MB
VRAM_SIZE="16"         # VRAM in MB
DISK_SIZE="20G"
USERNAME="root"
PASSWORD="111111"
UBUNTU_VERSION="22.04"
ARCH="amd64"
IMG_NAME="ubuntu-${UBUNTU_VERSION}-server-cloudimg-${ARCH}.img"
VDI_IMG="${VM_NAME}.vdi"
CLOUD_INIT_CFG="cloud-init.yaml"
CLOUD_INIT_ISO="cloud-init.iso"

# Port Mappings (Host:Guest)
PORT_MAPPINGS=(
  "2222:22"
  "3333:3306"
  "4443:443"
  "3003:3003"
  "3128:3128"
  "1500:500"
  "4500:4500"
  "1701:1701"
  "1194:1194"
)

# URLs
BASE_URL="https://cloud-images.ubuntu.com/releases/${UBUNTU_VERSION}/release"
IMG_URL="${BASE_URL}/${IMG_NAME}"

# Check dependencies
if ! command -v VBoxManage &> /dev/null; then
    echo "Error: VirtualBox is not installed."
    exit 1
fi

# Download Ubuntu Cloud Image
if [ ! -f "$IMG_NAME" ]; then
    echo "Downloading Ubuntu image..."
    wget -q --show-progress "$IMG_URL"
fi

# Resize and Convert Image
if [ ! -f "$VDI_IMG" ]; then
    echo "Preparing disk image..."
    # Create a temp copy to avoid modifying the original download
    cp "$IMG_NAME" temp.img

    # Resize the raw image first (reliable)
    qemu-img resize temp.img "$DISK_SIZE"

    # Convert the resized image to VDI
    echo "Converting to VDI..."
    qemu-img convert -O vdi temp.img "$VDI_IMG"

    # Cleanup
    rm temp.img
fi

# Generate Cloud-Init ISO
if [ ! -f "$CLOUD_INIT_ISO" ]; then
    echo "Generating Cloud-Init ISO..."
    cat >$CLOUD_INIT_CFG <<EOF
#cloud-config
system_info:
  default_user:
    name: ${USERNAME}
password: ${PASSWORD}
chpasswd: { expire: False }
hostname: ${VM_NAME}
ssh_pwauth: True
package_update: true
package_upgrade: true
runcmd:
  - sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
  - systemctl restart ssh
EOF
    cloud-localds "$CLOUD_INIT_ISO" "$CLOUD_INIT_CFG"
fi

# Clean up existing VM if needed
if VBoxManage showvminfo "$VM_NAME" &> /dev/null; then
    echo "Warning: VM '$VM_NAME' already exists. Stop and delete it to recreate."
    exit 1
fi

# Create VM
echo "Creating VirtualBox VM..."
VBoxManage createvm --name "$VM_NAME" --ostype "Ubuntu_64" --register

# Configure System Settings
VBoxManage modifyvm "$VM_NAME" \
    --cpus "$CPU_CORES" \
    --memory "$RAM_SIZE" \
    --vram "$VRAM_SIZE" \
    --nic1 nat \
    --audio none \
    --rtcuseutc on

# Configure Port Forwarding
echo "Configuring network rules..."
for mapping in "${PORT_MAPPINGS[@]}"; do
    HOST_PORT=${mapping%%:*}
    GUEST_PORT=${mapping##*:}
    RULE_NAME="rule_${HOST_PORT}_${GUEST_PORT}"
    VBoxManage modifyvm "$VM_NAME" --natpf1 "${RULE_NAME},tcp,,${HOST_PORT},,${GUEST_PORT}"
done

# Storage Controller (SATA)
VBoxManage storagectl "$VM_NAME" --name "SATA Controller" --add sata --controller IntelAHCI

# Attach OS Disk (Port 0)
VBoxManage storageattach "$VM_NAME" --storagectl "SATA Controller" \
    --port 0 --device 0 --type hdd --medium "$VDI_IMG"

# Attach Cloud-Init ISO (Port 1)
VBoxManage storageattach "$VM_NAME" --storagectl "SATA Controller" \
    --port 1 --device 0 --type dvddrive --medium "$CLOUD_INIT_ISO"

# Start VM
echo "Starting VM (Headless)..."
VBoxManage startvm "$VM_NAME" --type headless

echo "VM is booting. Connect via: ssh -p 2222 ${USERNAME}@localhost"