manage.sh

#!/bin/bash

# Function to create a virtual disk image
create_disk_image() {
  qemu-img create -f qcow2 /app/ubuntu_vm.qcow2 15G
  echo "Virtual disk image created: /app/ubuntu_vm.qcow2 (15GB)"
}

# Function to download Ubuntu ISO
download_ubuntu_iso() {
  wget -O /app/ubuntu-20.04-live-server-amd64.iso https://old-releases.ubuntu.com/releases/20.04.2/ubuntu-20.04.2-live-server-amd64.iso
  echo "Ubuntu ISO downloaded: /app/ubuntu-20.04-live-server-amd64.iso"
}

# Function to install Ubuntu on VM
install_ubuntu_vm() {
  virt-install \
    --name ubuntu_vm \
    --ram 2048 \
    --disk path=/app/ubuntu_vm.qcow2,format=qcow2 \
    --vcpus 2 \
    --os-type linux \
    --os-variant ubuntu20.04 \
    --network bridge=virbr0,model=virtio \
    --graphics none \
    --console pty,target_type=serial \
    --location 'http://archive.ubuntu.com/ubuntu/dists/focal/main/installer-amd64/' \
    --extra-args 'console=ttyS0,115200n8 serial'
  echo "Ubuntu installation initiated for VM: ubuntu_vm"
}

# Function to manage VM state
manage_vm() {
  case $1 in
    start)
      virsh start ubuntu_vm
      echo "VM started: ubuntu_vm"
      ;;
    stop)
      virsh shutdown ubuntu_vm
      echo "VM stopped: ubuntu_vm"
      ;;
    console)
      virsh console ubuntu_vm
      ;;
    *)
      echo "Usage: $0 {start|stop|console}"
      ;;
  esac
}

# Main menu
case $1 in
  create-disk)
    create_disk_image
    ;;
  download-iso)
    download_ubuntu_iso
    ;;
  install-vm)
    install_ubuntu_vm
    ;;
  manage-vm)
    manage_vm $2
    ;;
  *)
    echo "Usage: $0 {create-disk|download-iso|install-vm|manage-vm {start|stop|console}}"
    ;;
esac