description Krustlet Overview
Krustlet is an open-source tool enabling developers to package any application—regardless of language or framework—into lightweight, reproducible container images using a declarative configuration file.
help Krustlet FAQ
What is Krustlet actually used for?
Krustlet is an open-source Kubernetes kubelet written in Rust for running WebAssembly workloads. It acts like a Kubernetes node and listens for pods assigned to it. [Krustlet documentation](https://docs.krustlet.dev/intro/intro/)
Does Krustlet package any application into a container image?
No, the official documentation says an application must be compiled to WebAssembly and pushed to a container registry before Krustlet can run it. Krustlet is a workload runtime and kubelet, not a general-purpose image builder.
How does Krustlet decide which Kubernetes pods to run?
The Kubernetes scheduler assigns pods to a Krustlet node when their tolerations match the node. Krustlet listens to the event stream for those assignments and fetches the WebAssembly module.
Is Krustlet production-ready?
The project website labels Krustlet experimental, and its GitHub README says the project is not actively maintained. It should therefore be treated as an experimental Kubernetes and WebAssembly tool. [Project repository](https://github.com/krustlet/krustlet)
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