Karpenter Provider for IBM Cloud

This repository contains the Karpenter Provider implementation for IBM Cloud, enabling dynamic node provisioning in IBM Cloud Kubernetes clusters using Karpenter.

View Full Documentation | Getting Started Guide

Overview

Karpenter is an open-source node provisioning project for Kubernetes. This provider extends Karpenter's functionality to work with IBM Cloud, allowing for:

• Dynamic node provisioning in IBM Cloud VPC
• Instance type management and selection
• Automated scaling based on workload demands
• Integration with IBM Cloud APIs

Kubernetes Support

Kubernetes Version	Status
1.29	✅ Supported
1.30	✅ Supported
1.31	✅ Supported
1.32	✅ Supported
1.33	✅ Supported
1.34	✅ Supported
1.35	✅ Supported
1.36+	⚠️ Untested

Based on dependency analysis. Generated on 2025-11-30.

Container Images

Multi-architecture images (amd64, arm64, s390x) are published to quay.io/karpenter-provider-ibm-cloud/controller.

See Container Images for details on pulling images, supported architectures, and Nightly Builds for testing pre-release versions.

Development

Testing and CI

The project includes automated testing and continuous integration workflows:

Helm Chart Testing

Tests run automatically on:

• All pull requests (validates changes before merge)
• Manual trigger via GitHub Actions UI

The tests perform:

• Chart linting for syntax and best practices
• Template rendering validation
• Kubernetes manifest validation
• Custom Resource Definition (CRD) verification

Chart Publishing

After changes pass tests and are merged to main:

• The chart is automatically packaged
• The Helm repository index is updated
• Changes are published to GitHub Pages

These CI workflows ensure chart quality through pre-merge validation and maintain the Helm repository for easy installation.

Subprojects and Additional Repositories

This project does not currently produce, maintain, or release any additional subproject codebases or separate repositories.

Status: Not applicable Intent: The project is intentionally maintained as a single repository. If additional subprojects or repositories are introduced in the future, they will be documented in this section.

Getting Help

Community Support

• Join our Slack - Get help from the community and maintainers
• Report Issues - Found a bug or have a feature request?
• Documentation - Complete guides and API reference

Contributing

Contributions are welcome! Please read our Contributing Guidelines for details on how to submit pull requests.

License

This project is licensed under the Apache 2 License.