Kubernetes Without Boundaries

Add any Linux machine to your Kubernetes cluster - cloud, on-prem, bare metal, or edge - no matter where it lives or what network it's on.

Get Started GitHub
Three sites - bare metal, public cloud, and AI infrastructure - connected to a central Kubernetes control plane through WireGuard tunnels and direct L3 links.

Key Features

Multi-Site Networking

Transparent pod-to-pod connectivity across sites using WireGuard, GENEVE, VXLAN, IPIP, or direct routing with an eBPF dataplane.

SSH-Based Provisioning

Join existing Linux machines to the cluster over SSH with a single command.

Cloud API Provisioning

Auto-provision instances from Nebius, CoreWeave, OCI, Azure, AWS, and others in response to unschedulable pods.

Bare-Metal PXE Boot

PXE-boot servers with integrated DHCP, TFTP, HTTP, Redfish BMC power management, and TPM 2.0 attestation.

Any Conformant Kubernetes

AKS, EKS, GKE, kubeadm, k3s, and more. Bring your own cluster or use the quickstart script.

GPU Support

Automatic detection and configuration of NVIDIA GPUs on provisioned nodes.

What you can do with it

Bring on-prem servers, bare-metal machines, cloud instances, and edge devices into your Kubernetes cluster. Provision over SSH, cloud API, or PXE boot.

unbounded

Automatically enables the Kubernetes networking model across all your sites. Works with your existing L3 interconnects, or uses WireGuard, GENEVE, VXLAN, or IPIP tunnels with an eBPF dataplane.

unbounded

Everything is a custom resource. Reboot nodes, track operations, and manage lifecycle declaratively using standard kubectl commands and CRDs.

unbounded

Quick Start

Get a working multi-site cluster in under 10 minutes. Already have a cluster? See the Bring Your Own Cluster guide.

  1. 1
    Install the kubectl plugin
    curl -sL https://github.com/Azure/unbounded/releases/latest/download/kubectl-unbounded-linux-amd64.tar.gz | tar xz sudo mv kubectl-unbounded /usr/local/bin/
  2. 2
    Create the cluster
    curl -fsSLO https://raw.githubusercontent.com/Azure/unbounded/main/hack/scripts/aks-quickstart.sh chmod +x aks-quickstart.sh ./aks-quickstart.sh create \ --name my-unbounded \ --location eastus \ --remote-node-cidr 192.168.1.0/24 \ --remote-pod-cidr 10.245.0.0/16
  3. 3
    Add a remote node
    kubectl unbounded machine manual-bootstrap my-node --site remote \ | ssh user@remote-host sudo bash
    Replace user@remote-host with the SSH user and IP of your remote machine.
  4. 4
    Verify
    kubectl get nodes -w

For the full walkthrough, see the Getting Started Guide.

Explore the Docs

Jump to what you need.

Get Started

Getting Started Guide

End-to-end walkthrough - from zero to a running multi-site cluster.

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Deploy to an Existing Cluster

Add Unbounded to a cluster you already have running.

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Add a Remote Node via SSH

Point machina at any reachable Linux host and watch it join your cluster.

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Connect & Scale

Set Up Cross-Site Networking

WireGuard tunnels, GENEVE overlays, and eBPF routing across sites.

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Connect Cloud Instances

Spin up GPU or compute instances and have them join via cloud-init.

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PXE Boot Bare-Metal Servers

Netboot machines with metalman's DHCP, TFTP, and HTTP stack.

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Operate & Reference

Reboot & Upgrade Nodes

Patch Machine specs to upgrade Kubernetes versions or trigger reboots.

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GPU Workloads

Run GPU-accelerated workloads on remote nodes with automatic driver setup.

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Architecture & CLI Reference

Controllers, CRDs, provisioning flows, and the kubectl plugin.

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