What is the name of the official *nix OS kernel metrics exporter?

The nodeexporter is the official and most widely used Prometheus exporter for gathering hardware and operating system metrics from NIX kernels, including Linux. It is designed to expose a wide variety of system-level statistics, such as CPU utilization, memory usage, disk I/O, and network traffic. In the Prometheus ecosystem, the term "node" is a synonym for a host or machine, hence the name nodeexporter. It is a standalone binary that runs on the target machine to collect and expose these metrics over HTTP for a Prometheus server to scrape.

A. Prometheusexporter is a generic descriptor for any exporter compatible with Prometheus, not the specific name of the official OS metrics exporter.
C. metricsexporter is a functional description, not a specific product name. Many tools could be described this way, but it is not the official name.
D. osexporter is a plausible but incorrect name. The official tool is named nodeexporter to signify it exports metrics from a machine (node).

1. Prometheus Official Documentation: The official GitHub repository for the project explicitly names it nodeexporter and describes its purpose.

Source: Prometheus Community. (n.d.). prometheus/nodeexporter. GitHub.

Reference: README.md, "Prometheus exporter for hardware and OS metrics exposed by NIX kernels." Retrieved from https://github.com/prometheus/nodeexporter

2. Prometheus Official Guides: The official setup guide for monitoring Linux hosts directly specifies the use of nodeexporter.

Source: Prometheus.io. (n.d.). Monitoring a Linux host with the Node Exporter.

Reference: Section "Installing and running the Node Exporter". Retrieved from https://prometheus.io/docs/guides/node-exporter/

3. University Courseware: Reputable university courses on distributed systems and cloud computing reference nodeexporter as the standard tool for host-level metric collection.

Source: University of Tartu, Institute of Computer Science. (2023). Distributed Systems (MTAT.08.021).

Reference: Lab 10: Monitoring, "The most common way to get system metrics (CPU, memory, disk, network) is to use the nodeexporter." Retrieved from https://courses.cs.ut.ee/2023/ds/spring/Main/Lab10-Monitoring