使Kubernetes控制器适应边缘：使用Wasm和WASI的按需控制平面
Adapting Kubernetes controllers to the edge: on-demand control planes using Wasm and WASI
摘要：
Kubernetes的高资源需求阻碍了它在边缘和雾等受限环境中的采用。它的可扩展控制平面是一个重要的贡献者，它由称为“控制器”的长期进程组成，这些进程不断地监听状态更改并使用资源，即使在不需要的时候也是如此。本文提出了一种基于WebAssembly的框架，用于按需运行轻量级控制器，仅在需要时运行。该框架扩展了WebAssembly系统接口（WASI），以便将Kubernetes控制器作为轻量级Wasm模块运行。该框架在Wasmtime的修改版本（参考WebAssembly（Wasm）运行时）中运行这些Wasm控制器，该版本将空闲控制器交换到磁盘并在需要时激活它们。一个全面的评估表明，该框架实现了64%的内存减少相比，传统的基于容器的控制器框架。
英文摘要：
Kubernetes' high resource requirements hamper its adoption in constrained environments such as the edge and fog. Its extensible control plane is a significant contributor to this, consisting of long-lived processes called "controllers" that constantly listen for state changes and use resources even when they are not needed. This paper presents a WebAssembly-based framework for running lightweight controllers on-demand, only when they are needed. This framework extends the WebAssembly System Interface (WASI), in order to run Kubernetes controllers as lightweight Wasm modules. The framework runs these Wasm controllers in a modified version of Wasmtime, the reference WebAssembly (Wasm) runtime, that swaps idle controllers to disk and activates them when needed. A thorough evaluation shows this framework achieves a 64% memory reduction compared to traditional container-based controller frameworks.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
