kube-dra

A Rust library for building Kubernetes Dynamic Resource Allocation (DRA) drivers.

This crate is under active development and not yet usable. Watch this repository for updates.

What is this?

DRA went GA in Kubernetes 1.34. The Kubernetes project provides k8s.io/dynamic-resource-allocation — a set of Go packages that handle all the plumbing a DRA driver needs: kubelet plugin registration, ResourceSlice synchronization, gRPC lifecycle, claim fetching, device metadata, rolling updates, and API version negotiation.

No equivalent exists for Rust. kube-dra aims to be a drop-in replacement.

Architecture

The workspace mirrors the Go module structure:

kube-dra/
  client/            Negotiates API versions with the cluster
  resourceslice/     Watches and reconciles ResourceSlice objects
  kubeletplugin/     Kubelet plugin registration, gRPC servers, device preparation

A DRA driver depends on kubeletplugin, implements the DraPlugin trait, and the library handles everything else.

Out of scope (driver responsibility)

• Device discovery and enumeration
• Checkpoint persistence across restarts
• CDI spec writing for device access (distinct from metadata CDI)
• Opaque config decoding (driver-specific types)
• Health check server

License

Apache 2.0 licensed. See LICENSE for details.