Prometheus Node exporter

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Prometheus Node exporter

Installing Node Exporter[edit]

systemctl config files:

Installing Node Exporter from Prometheus binary releases[edit]

Configuring Prometheus to Scrape Node Exporter[edit]

Because Prometheus only scrapes exporters which are defined in the scrape_configs portion of its configuration file, we'll need to add an entry for Node Exporter, just like we did for Prometheus itself.

At the end of the scrape_configs block, add a new entry called node_exporter.

global:
 scrape_interval: 15s

scrape_configs:
 - job_name: 'prometheus'
   scrape_interval: 5s
   static_configs:
     - targets: ['localhost:9090']
 - job_name: 'node_exporter'
   scrape_interval: 5s
   static_configs:
      - targets: ['localhost:9100']

Finally, restart Prometheus to put the changes into effect and verify status

Ubuntu[edit]

https://packages.ubuntu.com/search?keywords=prometheus-node-exporter

cat /etc/default/prometheus-node-exporter | grep -v "#" | grep .
ARGS="--collector.diskstats.ignored-devices=^(ram|loop|fd|(h|s|v|xv)d[a-z]|nvme\\d+n\\d+p)\\d+$ \
     --collector.filesystem.ignored-mount-points=^/(sys|proc|dev|run)($|/) \
     --collector.netdev.ignored-devices=^lo$ \
     --collector.textfile.directory=/var/lib/prometheus/node-exporter"

Logs[edit]

nodeexporter | ts=2023-01-12T18:23:45.617Z caller=tls_config.go:195 level=info msg="TLS is disabled." http2=false

Related terms[edit]

See also[edit]

  • https://github.com/prometheus/node_exporter#using-docker
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