In this context, a "node" refers to an instance of an operating system, whether or not it is part of a cluster or a standalone system, and the node name is a separate entity from the host name.

在这个上下文中，“节点”是指一个操作系统实例，它可能是集群的一部分或单独的系统，节点名与主机名是不同的实体。

youdao

For those of you that like the technical details, Mozilla has managed to do away with the UAC prompt by using a standalone system-level service.

FORBES: Mozilla Makes Firefox Updates Less Painful

Designed to be used as a standalone machine or in clustered configurations, the X7A will run any x86-based Operating System, including Windows 8 and lower, Linux, UNIX, etc.

ENGADGET: Xi3 goes the crowdfunding route for future X3A, X7A modular PCs (update: official PR)