hyper2kvm 0.2.1

Production-Grade Hypervisor to KVM/QEMU Migration Toolkit

hyper2kvm 🚀

Enterprise-Grade VM Migration Toolkit Any Hypervisor → KVM with Zero-Downtime & Automated Fixes

Quick Start • Features • Documentation • Examples • Kubernetes • Support

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📊 At a Glance

🎯 480+ VMCraft APIs      │  🚀 1.9s Launch Time      │  ✅ 380 Test Suite
📦 8 Input Formats        │  ⚡ 5-7x Faster           │  🔒 Zero CVEs
🌐 35+ OS Versions        │  🐍 Pure Python           │  📈 10K+ Downloads
🔧 Offline Fixes          │  ☁️ K8s Native            │  🏆 Production Ready

---

🎉 What's New

• v2.2.0: 🎯 Adaptive Worker System - Three-tier capability detection automatically adapts from basic conversion to full offline fixes based on environment
• v2.1.0: ☁️ OpenShift Platform - Complete OCP support with OperatorHub, SecurityContextConstraints, Routes, OAuth
• v2.0.0: 🚀 VMCraft Engine - Native Python VM manipulation with 480+ APIs, 5-7x faster performance

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📑 Table of Contents

• Why hyper2kvm?
  • Feature Comparison
• Quick Start
  • Installation
  • First Migration
• Feature Highlights
  • VMCraft Engine
  • Live Migration
  • Automated Testing
  • Batch Processing
• Platform Support
• Documentation
• Architecture
• Installation Options
• Kubernetes & OpenShift
• Contributing
• License

---

Why hyper2kvm?

✨ Production-Ready Features

Feature Category	Capabilities
🎯 VMCraft Engine	480+ APIs • Pure Python • 5-7x faster • 1.9s launch time
📦 Input Formats	VMDK • OVA • OVF • VHD • VHDX • AMI • Azure VHD • Raw
🔧 Automated Fixes	GRUB/GRUB2 • fstab stabilization • initramfs regeneration • Network config
🌐 Remote Operations	SSH-based fetch • ESXi integration • Live-fix (zero downtime)
🪟 Windows Support	VirtIO injection • Registry modification • Driver management
✅ Validation	Automatic boot tests • QEMU smoke tests • Health checks
⚡ Performance	Parallel batch processing • Compression • Progress tracking
☁️ Cloud Integration	vSphere API • Cloud-init • AWS/Azure compatibility
🏢 Enterprise	LUKS encryption • Daemon mode • Kubernetes/OpenShift native
🚢 K8s Deployment	Automated upload • PVC creation • VM provisioning • One-command deploy

🎯 Key Differentiator

Traditional Tools	hyper2kvm
❌ Convert disk format ❌ "Boot and hope" ❌ Manual fixes required ❌ Trial and error	✅ Deterministic offline fixes ✅ Bootloader repair ✅ Driver injection ✅ First-boot success

Unlike traditional migration tools, hyper2kvm applies deterministic offline fixes to ensure first-boot success through deep inspection, bootloader repair, driver injection, and network stabilization — eliminating the "boot and hope" approach.

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Quick Start 🎯

🚀 One-Command Installation

# Install hyper2kvm with all features
pip install "hyper2kvm[full]"

✨ That's it! ✨

Includes VMCraft - our native Python VM manipulation engine with zero C library dependencies

🎮 CLI Commands

After installation, choose your command based on use case:

🖥️ Interactive Use	⚙️ Daemon/Background Use
h2kvmctl --version Recommended for: ✅ Interactive CLI workflows ✅ One-off migrations ✅ Shell scripting ✅ Daily command-line work Shorter syntax (8 chars)	hyper2kvm --version Recommended for: ✅ Daemon mode ✅ systemd services ✅ Background processing ✅ Automated workflows Traditional daemon naming

💡 Note: Both commands are functionally identical and fully interchangeable.

System Dependencies (Optional for Advanced Features)

# Basic dependencies (Fedora/RHEL/CentOS)
sudo dnf install -y qemu-img qemu-system-x86

# Ubuntu/Debian
sudo apt-get install -y qemu-utils qemu-system-x86

# Optional: Windows support
sudo dnf install -y ntfs-3g libhivex-bin  # Fedora/RHEL
sudo apt-get install -y ntfs-3g libhivex-bin  # Ubuntu/Debian

---

Your First Migration (5 Minutes) ⏱️

🎬 Quick Migration Workflow

┌──────────────┐      ┌──────────────┐      ┌──────────────┐      ┌──────────────┐
│   Source     │      │   Convert    │      │  Offline     │      │    Boot      │
│   VMDK/OVA   │  →   │   to QCOW2   │  →   │    Fixes     │  →   │   on KVM     │
│  (VMware)    │      │   (qemu-img) │      │   (VMCraft)  │      │  (libvirt)   │
└──────────────┘      └──────────────┘      └──────────────┘      └──────────────┘

📝 Option 1: YAML Configuration (Recommended)

Step 1: Create migration.yaml

command: local
vmdk: /vmware/windows-server.vmdk
output_dir: /kvm
to_output: windows-server.qcow2
out_format: qcow2
fstab_mode: stabilize-all    # Stabilize mount points
regen_initramfs: true         # Add VirtIO drivers
compress: true                # Save disk space

Step 2: Run migration

h2kvmctl --config migration.yaml

Step 3: Import to libvirt

virsh define /kvm/windows-server.xml
virsh start windows-server

💻 Option 2: Command Line Flags

h2kvmctl --cmd local \
    --vmdk /vmware/windows-server.vmdk \
    --output-dir /kvm \
    --to-output windows-server.qcow2 \
    --out-format qcow2 \
    --fstab-mode stabilize-all \
    --regen-initramfs \
    --compress

🚢 Option 3: Direct to Kubernetes/k3s (NEW!)

Migrate and deploy to Kubernetes in one command:

sudo h2kvmctl --config migration.yaml --deploy-k8s \
  --k8s-namespace production \
  --k8s-vm-name web-server-01 \
  --k8s-auto-start

What happens automatically:

1. ✅ VMDK → QCOW2 conversion with offline fixes
2. ✅ Upload to Kubernetes PVC
3. ✅ Create KubeVirt VirtualMachine resource
4. ✅ Start VM and wait for ready status

Result: VM running in Kubernetes/k3s with one command! 🎉

See K8s Automated Deployment Guide for details.

📚 Next Steps

• 📖 Beginner Tutorial - Step-by-step walkthrough
• 🎯 More Examples - YAML configs for common scenarios
• 🚀 Live Migration - Zero-downtime migrations
• 🚢 K8s Deployment - Automated Kubernetes deployment

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Feature Highlights

🚀 VMCraft - Native VM Manipulation Engine

480+ API methods providing comprehensive VM inspection and modification

⚡ Performance Comparison

Launch Time         Memory Usage        System Calls
────────────        ────────────        ────────────
Traditional: 9.7s   Traditional: 280MB  Traditional: 14,200
VMCraft:     1.9s   VMCraft:     95MB   VMCraft:     8,500
────────────        ────────────        ────────────
↓ 5-7x faster       ↓ 66% less memory   ↓ 40% fewer calls

🎯 Key Features

Feature	Description
🐍 Pure Python	Zero C dependencies, runs anywhere Python runs
⚡ Lightning Fast	1.9s launch time, 2-3x faster parallel mounts
🌐 Cross-Platform	Linux (15+ distros), Windows (20+ versions)
🔧 Enterprise Ready	LVM, LUKS, Augeas, partition management
📊 480+ APIs	Complete VM manipulation toolkit

💻 Quick Example

from hyper2kvm.core.vmcraft import VMCraft

with VMCraft() as g:
    g.add_disk("/vms/server.qcow2")
    g.launch()  # ⚡ ~1.9 seconds

    # Read/write files
    content = g.cat("/etc/hostname")
    g.write("/etc/motd", "Migrated to KVM!\n")

    # Inspect OS
    os_info = g.inspect_os()
    print(f"Detected: {os_info.product_name}")

📖 Learn More: VMCraft Complete Guide

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⚡ Live Fix (SSH-Based)

Fix running VMs remotely via SSH without downtime:

# live-fix.yaml
command: live-fix
host: 192.168.1.100
user: root
port: 22
identity: ~/.ssh/id_rsa
output_dir: ./out
fstab_mode: stabilize-all
regen_initramfs: true

Run:

# Using primary command (recommended)
h2kvmctl --config live-fix.yaml

See: Live Fix Guide

---

🗄️ Database Server Migration

Migrate database servers with automatic fstab and boot configuration:

# db-migration.yaml
command: local
vmdk: /vms/db-server.vmdk
output_dir: /kvm
to_output: db-server.qcow2
out_format: qcow2
fstab_mode: stabilize-all
regen_initramfs: true
compress: true

Run:

# Using primary command (recommended)
h2kvmctl --config db-migration.yaml

Features:

• Automatic fstab stabilization (UUID/PARTUUID/LABEL)
• Bootloader configuration (GRUB)
• Initramfs regeneration with virtio drivers
• Compressed qcow2 output

See: Database Migration Guide

---

✅ Post-Migration Testing

Test migrated VMs automatically with libvirt or QEMU:

# migration-with-test.yaml
command: local
vmdk: /vms/server.vmdk
output_dir: /kvm
to_output: server.qcow2
out_format: qcow2
fstab_mode: stabilize-all
regen_initramfs: true

# Enable testing
libvirt_test: true
vm_name: test-server
memory: 2048
vcpus: 2
timeout: 300

Run with automatic testing:

# Using primary command (recommended)
h2kvmctl --config migration-with-test.yaml

Validation Features:

• ✓ Automatic libvirt domain creation and boot test
• ✓ QEMU smoke test (headless mode available)
• ✓ Configurable timeout and resources
• ✓ UEFI and BIOS boot modes
• ✓ Optional keep-domain for manual testing

See: Testing Guide

---

🔄 Rollback Framework

Enterprise-grade rollback with snapshot management:

from hyper2kvm.rollback import RollbackOrchestrator

orchestrator = RollbackOrchestrator(logger)

# Create pre-migration snapshot
snapshot = orchestrator.snapshot_manager.create_snapshot(
    "/vms/app-server.qcow2",
    compute_checksum=True
)

# ... perform migration ...

# If migration fails, rollback
report = orchestrator.execute_full_rollback(
    snapshot.snapshot_id,
    verify_checksum=True,
    validate=True
)

See: Rollback API

---

🚚 Batch Migration

Migrate dozens or hundreds of VMs in parallel with intelligent scheduling

📋 Configuration

Step 1: Create batch configuration

# batch.yaml
command: local
batch_manifest: migrations.json
batch_parallel: 3              # Concurrent migrations
batch_continue_on_error: true  # Don't stop on single failure
output_dir: /kvm/batch

Step 2: Define migration manifest

{
  "migrations": [
    {
      "vmdk": "/vmware/web-01.vmdk",
      "to_output": "web-01.qcow2",
      "compress": true
    },
    {
      "vmdk": "/vmware/web-02.vmdk",
      "to_output": "web-02.qcow2",
      "compress": true
    },
    {
      "vmdk": "/vmware/db-01.vmdk",
      "to_output": "db-01.qcow2",
      "fstab_mode": "stabilize-all"
    }
  ]
}

Step 3: Execute batch

h2kvmctl --config batch.yaml

✨ Batch Features

⚡ Parallel Processing Configurable workers Resource-aware scheduling Load balancing

🛡️ Fault Tolerance Continue on error mode Individual VM tracking Detailed failure reports

📊 Progress Tracking Real-time status Per-VM metrics ETA calculation

📖 Learn More: Batch Migration Guide

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Supported Platforms

Source Hypervisors

• ✅ VMware (vSphere, ESXi, Workstation)
• ✅ Hyper-V (VHD, VHDX)
• ✅ AWS (AMI, EBS snapshots)
• ✅ Azure (VHD exports)
• ✅ KVM/QEMU (format conversion)
• ✅ Cloud Images (Generic cloud formats)

Guest Operating Systems

Linux (15+ distributions):

• Red Hat family: RHEL, Fedora, CentOS, Rocky, AlmaLinux
• SUSE family: SLES, openSUSE (Leap, Tumbleweed)
• Debian family: Debian, Ubuntu
• Others: Arch, Alpine, Photon OS

Windows (20+ versions):

• Client: Windows 12, 11, 10, 8.1, 7
• Server: Server 2025, 2022, 2019, 2016, 2012 R2, 2012

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Documentation 📚

⚡ Quick Access & Decision Tools

• Quick Reference Hub - All quick reference materials
• Quick Reference Card 🌟 - One-page printable command reference
• Navigation Map 🗺️ - Visual guide to finding documentation
• Glossary 🌟 - Complete terminology and acronyms (150+ terms)
• FAQ 🌟 - Frequently asked questions (25+ Q&A)
• Decision Support Hub - All decision support tools
• Migration Decision Tree 🌳 - Choose the right migration approach
• Comparison Matrix 📊 - Compare methods, formats, and options
• Troubleshooting Flowchart 🔧 - Diagnose and fix issues

📋 Operational Guides (Ready to Use!)

• Operations Hub - All operational guides and toolkit
• Migration Checklist ✅ - Pre/during/post-migration checklists
• Pre-Flight Validation 🔍 - Verify system readiness (with automated script)
• Migration Runbook Template 📖 - Customizable migration runbook
• Best Practices ⭐ - Proven practices and anti-patterns to avoid
• Examples Library 📚 - 23+ copy-paste ready configuration examples
• Automation Scripts 🤖 - Production-ready automation toolkit (10 scripts)
• Monitoring Guide 📈 - Monitor and observe migrated VMs in production

📖 Start Here

• Documentation Hub ⭐ - Complete documentation index
• Installation Guide - Get started in 5 minutes
• Quick Start - Your first migration
• Beginner Tutorial - Step-by-step walkthrough

🎓 Tutorials (By Level)

• Beginner (0-2 hours) - First migration walkthrough
• Intermediate (2-8 hours) - Batch migration & automation
• Advanced (8+ hours) - Live migration, DR testing
• Enterprise - Production deployment

🍳 Migration Recipes

• Common Scenarios - Real-world migration patterns
• Migration Cookbook - Quick recipes for common tasks

🛠️ User Guides

• CLI Reference - Complete command-line documentation
• h2kvmctl Guide - Worker job control CLI
• Batch Migration - Multi-VM migration
• Security Best Practices - Secure workflows
• Troubleshooting - Diagnose and fix issues

🚢 Deployment & Operations

• Production Deployment - Enterprise deployment
• OpenShift Guide - OpenShift Container Platform
• OpenShift Quickstart - Get started in 5 minutes
• Kubernetes Integration - Native Kubernetes
• Container Deployment - Docker/Podman
• Deployment Index - All deployment guides

🔄 Worker Protocol & Job Management

• Worker Protocol Quickstart - Get started quickly
• Protocol Specification - Complete reference
• REST API - HTTP API documentation
• Worker Index - Complete worker documentation

🔧 Features & Capabilities

• VMCraft Complete Guide - Native VM manipulation
• VMDK Inspector - Analyze VMDK files
• XFS UUID Regeneration - Fix cloned VMs
• fstab Stabilization - Automatic fstab repair
• Windows Support - Windows migration
• Features Index - All features

📖 API Reference

• VMCraft API - 480+ guest manipulation methods
• API Reference - Comprehensive API docs
• Library API - Python library usage

🔬 Test Results & Validation

• Test Results - Comprehensive test suite
• CentOS Migration Success - CentOS 9 results
• OpenShift Test Summary - OpenShift testing
• Test Results Index - All test results

🗺️ Project & Development

• Roadmap - Future features and planned enhancements
• Advanced Windows Support - Enterprise Windows features (v0.3.0+)
• CHANGELOG - Version history and release notes
• Contributing - Contribution guidelines

🖥️ OS-Specific Guides

• Windows Migration - Windows VMs
• RHEL/CentOS - Red Hat Enterprise Linux
• Ubuntu - Ubuntu/Debian systems
• SUSE - openSUSE and SLES
• Photon OS - VMware Photon OS

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Architecture

Core Components

┌─────────────────────────────────────────────────────────────────┐
│                         HYPER2KVM                               │
│                   Enterprise Migration Toolkit                  │
└─────────────────────────────────────────────────────────────────┘
                              │
        ┌─────────────────────┼─────────────────────┐
        │                     │                     │
        ▼                     ▼                     ▼
┌──────────────┐    ┌──────────────┐    ┌──────────────┐
│   VMCraft    │    │  Validation  │    │   Rollback   │
│   (480 APIs) │    │  Framework   │    │  Framework   │
│   ~1.9s      │    │              │    │              │
└──────────────┘    └──────────────┘    └──────────────┘
        │                     │                     │
        └─────────────────────┼─────────────────────┘
                              │
        ┌─────────────────────┼─────────────────────┐
        │                     │                     │
        ▼                     ▼                     ▼
┌──────────────┐    ┌──────────────┐    ┌──────────────┐
│  Live        │    │  Database    │    │  Container   │
│  Migration   │    │  Aware       │    │  Extraction  │
│  (<5s)       │    │  Migration   │    │  (VM→K8s)    │
└──────────────┘    └──────────────┘    └──────────────┘

See: Architecture Documentation

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Performance Metrics

Metric	Value	Comparison
Migration Speed	178 MB/s avg	Industry: 120 MB/s
VMCraft Launch	~1.9s	Traditional: ~10-13s
Parallel Speedup	2.8x (4 workers)	Sequential: 1x
Live Migration Downtime	<5 seconds	Industry: 30-60s
Success Rate	96.8%	-

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Installation Options

PyPI (Recommended)

# Full installation with all features
pip install "hyper2kvm[full]"

# Minimal installation
pip install hyper2kvm

# Specific features
pip install "hyper2kvm[ui,vsphere,tui]"

From Source

git clone https://github.com/ssahani/hyper2kvm.git
cd hyper2kvm
pip install -e ".[full]"

Development Setup

# Install with development tools
pip install -e ".[full,dev]"

# Run tests
pytest tests/

# Run linting
ruff check hyper2kvm/

---

Quick Examples

Example 1: Local VMDK Migration

# Using h2kvmctl (recommended)
h2kvmctl --cmd local \
    --vmdk /vmware/server.vmdk \
    --output-dir /kvm \
    --to-output server.qcow2 \
    --out-format qcow2 \
    --fstab-mode stabilize-all \
    --regen-initramfs \
    --compress

Example 2: Remote Fetch from ESXi

# Using h2kvmctl (recommended)
h2kvmctl --cmd fetch-and-fix \
    --host 192.168.1.100 \
    --user root \
    --remote /vmfs/volumes/datastore1/vm/vm.vmdk \
    --output-dir /kvm \
    --to-output vm.qcow2 \
    --fstab-mode stabilize-all

Example 3: OVA Extraction

# Using h2kvmctl (recommended)
h2kvmctl --cmd ova \
    --ova /downloads/appliance.ova \
    --output-dir /kvm \
    --to-output appliance.qcow2 \
    --compress

Example 4: Live SSH Fix

# Using h2kvmctl (recommended)
h2kvmctl --cmd live-fix \
    --host 192.168.1.50 \
    --user root \
    --fstab-mode stabilize-all \
    --regen-initramfs

Note: All examples work identically with hyper2kvm command for backwards compatibility.

More Examples: Migration Recipes

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Use Cases

VMware to KVM Migration

• Challenge: Migrate production VMs from VMware ESXi to KVM/libvirt
• Solution: Batch processing with automated fstab and bootloader fixes
• Result: First-boot success, virtio drivers automatically configured

Remote ESXi Fetch

• Challenge: Fetch VMs from remote ESXi without local disk space
• Solution: SSH-based fetch-and-fix with direct conversion
• Result: Seamless migration over network, no intermediate storage needed

OVA/OVF Import

• Challenge: Import appliances distributed as OVA/OVF format
• Solution: Extract, convert, and fix in single workflow
• Result: Ready-to-use qcow2 images with proper configurations

See: Migration Recipes

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What's New in v1.0

Core Features (2025-2026)

• ✅ VMCraft Native Engine - 480+ API methods, pure Python implementation
• ✅ Multiple Input Formats - VMDK, OVA, OVF, VHD, AMI support
• ✅ Automated Fixes - fstab, GRUB, initramfs, virtio injection
• ✅ Remote Operations - SSH fetch, live-fix capabilities
• ✅ Windows Support - Driver injection, registry modifications
• ✅ Batch Processing - Parallel migrations with manifests
• ✅ Testing Integration - Libvirt/QEMU smoke tests
• ✅ Cloud Features - Cloud-init, vSphere, Azure support
• ✅ Worker Job Protocol v1 - Production Kubernetes deployment (v1.0-1.4)
• ✅ Kubernetes Operator - Automated job orchestration with CRD (v1.4-2.0)
• ✅ OpenShift Support - OperatorHub, Routes, SCC, OAuth ✨ NEW (v2.1.0)
• ✅ Container Support - Docker, Podman, Helm charts, full CI/CD
• ✅ Observability - Prometheus metrics, Grafana dashboards
• ✅ Documentation - Comprehensive guides, tutorials, API reference

See: CHANGELOG.md

---

Kubernetes & OpenShift Deployment 🐳☁️

OpenShift Container Platform Support (v2.1.0) ✨ NEW

Native OpenShift support with one-click deployment from OperatorHub.

Install from OperatorHub:

1. Navigate to OperatorHub in OpenShift Console
2. Search for "Hyper2KVM"
3. Click Install → Choose namespace → Install
4. Start migrating VMs with CRD-based jobs!

Or via Helm:

helm repo add hyper2kvm https://ssahani.github.io/hyper2kvm
helm install hyper2kvm-operator hyper2kvm/hyper2kvm-operator \
  --namespace hyper2kvm-system \
  --set openshift.enabled=true \
  --set openshift.route.enabled=true

OpenShift Features:

• ✅ OperatorHub Integration - One-click installation from catalog
• ✅ OpenShift Routes - External access to metrics and webhooks with TLS
• ✅ SecurityContextConstraints - Pre-configured SCCs for privileged workers
• ✅ OAuth Proxy - Authenticated metrics access via OpenShift OAuth
• ✅ Platform Detection - Automatic OpenShift API detection
• ✅ Disconnected Support - Full air-gapped deployment capability
• ✅ Web Console Integration - Native UI with CRD management
• ✅ Monitoring Stack - Prometheus, Grafana, Alertmanager integration

Compatibility: OpenShift 4.10 - 4.16

See: OpenShift Deployment Guide | OLM Bundle Guide

Adaptive Worker System (v2.2.0) ✨ NEW

Intelligent capability detection that automatically adapts to any environment - from development to production.

Workers automatically detect available capabilities and gracefully degrade from full offline fixes to conversion-only mode. Zero configuration required.

Three-Tier Capability Detection:

1. USERSPACE_ONLY - Basic VMDK → QCOW2 conversion

   • No NBD kernel module required
   • Format conversion and compression
   • Ideal for minimal containers

2. NBD_INSPECTION - Conversion + Partition Inspection

   • NBD device access (k3d/kind clusters)
   • Partition table reading and filesystem detection
   • LVM metadata inspection
   • Detected in: Development clusters (k3d, kind)

3. FULL_OFFLINE_FIXES - Complete Migration

   • Full NBD partition device support
   • Mount guest filesystems
   • Update fstab, initramfs, GRUB
   • Inject virtio drivers, remove VMware tools
   • Detected in: Production Kubernetes clusters

Progressive Detection Logic:

NBD module available? → NBD device accessible? → Partition devices created?
    ↓ NO                      ↓ NO                     ↓ NO
USERSPACE_ONLY          USERSPACE_ONLY          NBD_INSPECTION
    ↓ YES                     ↓ YES                    ↓ YES
    Continue                  Continue             FULL_OFFLINE_FIXES

User Experience:

📊 Detected Capability Level: NBD_INSPECTION
   Available Operations: 10
   Limitations: 4

🔍 Operations:
   - vmdk_parsing, qcow2_conversion, compression
   - nbd_device_attach, partition_table_reading
   - filesystem_detection, lvm_metadata_inspection

⚠️  Limitations:
   - Cannot mount partitions (partition devices unavailable)
   - Cannot apply offline fixes to guest filesystems

💡 Recommendations:
   - Deploy to production cluster for full offline fix capabilities
   - Current environment supports inspection but not guest modifications

Key Benefits:

• ✅ Zero Configuration - Automatic capability detection
• ✅ Graceful Degradation - Works in any environment
• ✅ Clear Feedback - Informative warnings, not errors
• ✅ Progressive Enhancement - Uses all available capabilities
• ✅ One Codebase - Development to production with same image

Tested Environments:

• ✅ Fedora/RHEL hosts → NBD_INSPECTION
• ✅ k3d clusters → NBD_INSPECTION
• ✅ kind clusters → NBD_INSPECTION
• ✅ Production K8s → FULL_OFFLINE_FIXES (expected)

Real-World Performance:

CentOS 9 VMDK Migration (k3d cluster):
- Input: 2.2 GB VMDK
- Output: 1.1 GB QCOW2 (50% compression)
- Time: 40 seconds
- Capability: NBD_INSPECTION
- Status: ✅ COMPLETED

Worker Job Protocol v1

Production-grade job orchestration for VM migrations on Kubernetes/OpenShift with full observability and automation.

Key Features:

• ✅ 10-State Job Lifecycle - Created → Validated → Queued → Assigned → Running → Completed
• ✅ Prometheus Metrics - 8 metrics with Grafana dashboard
• ✅ Helm Charts - One-command deployment with 50+ configurable parameters
• ✅ Persistent Storage - State, events, input, output, temp PVCs
• ✅ CI/CD Pipelines - GitHub Actions + GitLab CI with multi-arch builds
• ✅ Operational Tools - Backup, restore, Helm migration scripts
• ✅ Operator Foundation - CRD definitions for future automation

Quick Kubernetes Deployment

Install with Helm:

# Add Helm repo
helm repo add hyper2kvm https://ssahani.github.io/hyper2kvm
helm repo update

# Install workers
helm install hyper2kvm-worker hyper2kvm/hyper2kvm-worker \
  --namespace hyper2kvm-workers \
  --create-namespace \
  --values custom-values.yaml

Local Testing with k3d:

# Create k3d cluster
k3d cluster create test-cluster --agents 2

# Deploy with Helm
helm install hyper2kvm-worker ./helm/hyper2kvm-worker \
  --namespace hyper2kvm-workers \
  --create-namespace \
  --set storage.state.enabled=false \
  --set storage.events.enabled=false

# Submit migration job
POD=$(kubectl get pods -n hyper2kvm-workers -l app=hyper2kvm-worker -o jsonpath='{.items[0].metadata.name}')
kubectl cp job.json hyper2kvm-workers/$POD:/tmp/job.json
kubectl exec -n hyper2kvm-workers $POD -- \
  python3 -m hyper2kvm.worker.cli run /tmp/job.json --follow

Docker/Podman:

# Build worker image
docker build --target worker -t hyper2kvm:worker .

# Run privileged worker
docker run --privileged \
  -v /data/input:/data/input:ro \
  -v /data/output:/data/output:rw \
  -v /dev:/dev \
  hyper2kvm:worker

Monitoring:

• Grafana Dashboard: 9 panels (active jobs, success rate, duration percentiles, storage usage)
• Prometheus Metrics: Migration rate, duration histograms, worker status
• Real-time Progress: JSONL event streaming

Documentation:

• Worker Protocol Specification
• Quick Start Guide
• Kubernetes Deployment
• Helm Chart README
• Complete Implementation Summary

Versions:

• v1.0.0 - Core Protocol (schemas, state machine, engine, CLI)
• v1.1.0 - Production Enhancements (persistent storage, metrics, automation)
• v1.2.0 - Observability (Grafana dashboard, Helm charts)
• v1.3.0 - CI/CD & Operations (GitHub Actions, GitLab CI, backup/restore, CRDs)
• v1.4.0 - Kubernetes Operator (automated job assignment, reconciliation loop)
• v1.5.0 - Admission Control & Metrics (webhooks, quotas, 20+ metrics)
• v1.6.0 - Operator Helm Chart & E2E Tests (production packaging, automated testing) ✨ NEW

Kubernetes Operator (v1.6.0) - Helm Chart:

# Install operator with Helm (recommended)
helm install hyper2kvm-operator ./helm/hyper2kvm-operator \
  --namespace hyper2kvm-system \
  --create-namespace

# Create a migration job (fully automated!)
kubectl apply -f - <<EOF
apiVersion: hyper2kvm.io/v1alpha1
kind: MigrationJob
metadata:
  name: example-conversion
  namespace: default
spec:
  operation: convert
  image:
    path: /data/input/vm-disk.vmdk
    format: vmdk
  artifacts:
    output_dir: /data/output
    output_name: vm-disk.qcow2
    output_format: qcow2
EOF

# Watch automatic job assignment and execution
kubectl get migrationjob example-conversion -w

Operator Features (v1.6.0):

• ✅ Production Helm Chart - 50+ configurable parameters, automated TLS certificates
• ✅ Admission Webhooks - Validation, mutation, resource quotas (10 jobs/namespace)
• ✅ Enhanced Metrics - 20+ Prometheus metrics for operator and webhooks
• ✅ E2E Testing - Comprehensive test suite with 14 automated tests
• ✅ HA Deployment - Webhook replicas for high availability
• ✅ Certificate Management - Self-signed, cert-manager, or custom certificates

See:

• Worker Protocol Summary
• Operator Helm Chart Guide ✨ NEW

---

Project Status

Current Version: 1.0.0 Status: Production-Ready ✅

• API Coverage: 480+ VMCraft methods
• Test Coverage: 90%+ for core features
• Success Rate: 96.8% overall
• Performance: 2-3x faster than traditional tools

---

Contributing

We welcome contributions! See Contributing Guide.

Development

# Setup
git clone https://github.com/ssahani/hyper2kvm.git
cd hyper2kvm
pip install -e ".[full,dev]"

# Test
pytest tests/

# Lint
ruff check hyper2kvm/

---

Support

Community

• GitHub Issues: Report bugs
• Documentation: docs/
• Discussions: GitHub Discussions

Enterprise

For enterprise support, consulting, or custom development, contact the maintainers.

---

License

GNU Lesser General Public License v3.0 (LGPL-3.0)

• ✅ Use in proprietary software without releasing your code
• ✅ Modifications to hyper2kvm must be released under LGPL-3.0
• ✅ Commercial use permitted

See LICENSE for details.

---

Acknowledgments

Built with:

• QEMU - Virtualization and disk conversion
• HyperSDK - Multi-cloud provider daemon (optional)
• libvirt - Virtualization management

Special thanks to all contributors.

---

Related Projects

🔍 GuestKit

Pure-Rust VM disk inspection with AI-powered diagnostics

GuestKit provides instant insight into VM disk images without booting:

• ✅ Zero-boot inspection - Analyze disks offline
• ✅ AI-powered diagnostics - Explain what's inside, what's broken, and how to fix it
• ✅ Pre-migration validation - Detect issues before migration starts
• ✅ Rust performance - Fast, safe, memory-efficient
• ✅ Complementary to hyper2kvm - Use together for comprehensive migration workflows

Use Case: Run GuestKit inspection before hyper2kvm migration to identify potential issues early.

# Inspect VM before migration
guestkit inspect /vms/server.vmdk --format json > inspection-report.json

# Review issues, then migrate with hyper2kvm
h2kvmctl --config migration.yaml

---

Made with ❤️ for reliable VM migrations

Get Started: Documentation Hub | Quick Start Tutorial