Krustlet

Krustlet is a Kubernetes kubelet implementation written in Rust that enables Kubernetes clusters to run workloads based on WebAssembly instead of traditional container images. It acts as an alternative node agent that integrates with Kubernetes while replacing the container runtime with a WebAssembly runtime, allowing applications to be deployed as Wasm modules. This approach provides improved startup times, stronger security isolation, and reduced resource consumption compared to containers, making it particularly appealing for edge and cloud-native environments. Krustlet supports WASI (WebAssembly System Interface), enabling Wasm modules to interact with system resources in a controlled and standardized way. It is designed to integrate seamlessly into existing Kubernetes clusters, allowing developers to schedule and manage Wasm workloads using familiar Kubernetes APIs and tooling.