liveBook · Manning

Node exporter

As explained in Logs and Telemetry

Prometheus Node Exporter is a Prometheus exporter that exposes operating-system and hardware metrics in Prometheus exposition format.

Node Exporter exposes operating-system and hardware metrics in Prometheus exposition format. In a Fluent Bit pipeline, node_exporter_metrics polls the compute node, while prometheus_exporter serves the formatted records at an HTTP /metrics endpoint for Prometheus to scrape. section 5.6.1

A minimal integration defines:

  • A node_exporter_metrics input with a scrape_interval measured in seconds. section 5.6.1
  • A tag and optional tag property for the collected records. section 5.6.1
  • A prometheus_exporter output with a listening host, port, and optional Prometheus labels. section 5.6.1
Listing 5.6 Prometheus exporter: prometheus-exporter-output.conf
[SERVICE]
  flush 5
  log_level info

[INPUT]
  name node_exporter_metrics   #1
  tag node_metrics
  scrape_interval 5            #2

[OUTPUT]
  name  prometheus_exporter     #3
  match *
  port  9885           #4
  host  0.0.0.0
  add_label  fluentbit exporter  #5

Use the configuration listing to see the complete five-second polling setup, wildcard output match, port 9885, all-network binding, and fluentbit label. section 5.6.1

Exposed metrics

A scrape can return node_cpu_seconds_total counters labeled by CPU, mode, and exporter identity, alongside disk read and flush counters labeled by device.

How Logs and Telemetry covers it

How deep it goes
Explains polling, labels, endpoints, and exposition output, but does not detail collector internals.
Examples
Uses a Fluent Bit configuration and CPU, guest-CPU, disk-read, and disk-flush exposition samples.
What it assumes
Requires a Linux environment and a Prometheus scrape path; identifies windows_exporter_metrics as the Windows counterpart.
What you can do after
Operate/configure a Linux Fluent Bit pipeline that exposes labeled node metrics at a Prometheus-compatible endpoint.
How it connects
Connects Node Exporter with Fluent Bit, Prometheus, Kubernetes, and windows_exporter_metrics.
Cover of Logs and Telemetry
liveBookmanning.com
Read Logs and Telemetry on liveBook Get the book at manning.com

Related concepts

This explainer was generated by Manning's knowledge graph from the text of Logs and Telemetry. The section links point to the parts of the book it draws on.