CoreOS 是一个基于Linux 内核的轻量级操作系统，为了计算机集群的基础设施建设而生，专注于自动化，轻松部署，安全，可靠，规模化。作为一个操作系统，CoreOS 提供了在应用容器内部署应用所需要的基础功能环境以及一系列用于服务发现和配置共享的内建工具。

CoreOS is an open-source lightweight operating system based on the Linux kernel and designed for providing infrastructure to clustered deployments, while focusing on automation, ease of application deployment, security, reliability and scalability. As an operating system, CoreOS provides only the minimal functionality required for deploying applications inside software containers, together with built-in mechanisms for service discovery and configuration sharing.