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Linux Foundation PCA Exam - Topic 4 Question 13 Discussion
Topic #: 4
What is the name of the official *nix OS kernel metrics exporter?
The official Prometheus exporter for collecting system-level and kernel-related metrics from Linux and other UNIX-like operating systems is the Node Exporter.
The Node Exporter exposes hardware and OS metrics including CPU load, memory usage, disk I/O, network traffic, and kernel statistics. It is designed to provide host-level observability and serves data at the default endpoint :9100/metrics in the standard Prometheus exposition text format.
This exporter is part of the official Prometheus ecosystem and is widely deployed for infrastructure monitoring. None of the other listed options (Prometheus_exporter, metrics_exporter, or os_exporter) are official components of the Prometheus project.
Verified from Prometheus documentation -- Node Exporter Overview, System Metrics Collection, and Official Exporters List.
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