Hypervisor Using KVM/QEMU

A Type-2 hypervisor for Linux systems using libvirt to manage KVM/QEMU virtual machines (VMs). This project includes two interfaces:

• Command Line Interface (CLI): Written in C++ for VM management.
• Graphical User Interface (GUI): Built with Python's Tkinter, offering an enhanced user experience with advanced features like VirtIO driver support, network selection, and VNC console access.

Note: This project requires a Linux OS and has been tested on Ubuntu 24.04.

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Features

• List VMs: Display all active and inactive VMs with details (name, status, ID, memory, vCPUs, autostart).
• Create VMs: From ISO with customizable memory, vCPUs, disk size, and network. GUI supports VirtIO for Windows.
• Start/Restart VMs
• Delete VMs: Optionally delete associated disk images.
• VNC Console Access: GUI access to VM via VNC viewer.
• Network Selection: Choose libvirt networks in GUI.
• Activity Log: Real-time logs with timestamps (GUI).
• Theming: GUI theme switching.

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Prerequisites

• Operating System: Linux (tested on Ubuntu 24.04)
• Hypervisor: KVM/QEMU with libvirt , TigerVNC
• Root Privileges: Use sudo or be in libvirt group

Dependencies

CLI:

• libvirt-dev
• g++
• qemu-img

GUI:

• python3
• python3-tk
• libvirt-python
• python-slugify
• vncviewer

VirtIO Drivers: Needed for Windows VMs

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Installation

1. Install System Dependencies

sudo apt update
sudo apt install -y libvirt-dev g++ qemu-kvm libvirt-daemon-system python3 python3-pip python3-tk virt-viewer
pip install -r requirements.txt

2. Clone the Repository

git clone https://github.com/NRNarender/HypervisorKVMQEMU.git
cd HypervisorKVMQEMU

3. Compile the CLI

g++ -o hypervisor Hypervisor_CLI.cpp -lvirt

4. Set Up Permissions

sudo usermod -aG libvirt $USER

Log out and log back in for changes to apply.

5. Verify KVM/QEMU Setup

sudo systemctl enable --now libvirtd
kvm-ok

6. Download ISO Files

• Windows ISO: Download from Microsoft.
• Ubuntu ISO: Download from Ubuntu. (or any other Operating System)
• VirtIO ISO: Download from Fedora (e.g., virtio-win.iso).
• Place them in /var/lib/libvirt/images/.

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Usage

CLI

Run:

sudo ./hypervisor

Menu Options:

1. List all VMs
2. Create a new VM from ISO
3. Start a VM
4. Stop a VM (graceful)
5. Force stop a VM
6. Delete a VM
7. Exit

Example (Create a VM):

• Select option 2 to create a VM.
• Enter VM name (e.g., test).
• Enter ISO path (e.g., /var/lib/libvirt/images/windows.iso).
• Enter VirtIO ISO path (e.g., /var/lib/libvirt/images/virtio-win.iso).
• Specify memory (e.g., 2048 MB), vCPUs (e.g., 2), and disk size (e.g., 20 GB).
• Select option 3 to start the VM (e.g., test).
• Find the VNC port number:

virsh dumpxml VM_NAME | grep vnc

• Connect to the VM using TigerVNC:

vncviewer localhost:PORT_NO   

Note: Port 5900 is the default for the first VM; subsequent VMs may use 5901, 5902, etc.

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GUI

Run:

sudo python3 Hypervisor_GUI.py

Tabs:

1. Virtual Machines: View and manage VMs, open VNC.
2. Create VM:
   • Enter VM name
   • Path to Windows ISO
   • Path to VirtIO ISO
   • Memory, vCPUs, Disk size
   • Select libvirt network (optional)
3. Settings: Change theme, URI, toggle log timestamps.

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VNC Console

• Select running VM
• Click Deploy
• Launches vncviewer for graphical access

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Notes

• Disk Images: Stored in /var/lib/libvirt/images/
• VNC: Uses virt-viewer or compatible client
• Permissions: Ensure write access to libvirt image directory
• VirtIO: Needed for Windows Installation
• Network: CLI uses default; GUI allows custom selection

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