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prometheusprometheus-node-exporter

I have installed Node exporter on 100 different servers and reading data collected on my prometheus server. but unable to distinguish data

I have a distributed system consisting of 100s of devices which has node exporter installed on them. My main server has a prometheus server which scrapes all these data. How do I know which data is coming from which of the devices?

Solution

  • you can define in your scrape_configs from prometheus.yml file different a label with the same name and different values for each node exporter

    scrape_configs:
  - job_name: 'nodeexporter-01'
    scrape_interval: 5s
    static_configs:
      - targets: [ 'nodeexporter:9100' ]
        labels:
          instance: 'nodeexporter-9100'
  - job_name: 'nodeexporter-02'
    scrape_interval: 5s
    static_configs:
      - targets: [ 'nodeexporter:9200' ]
        labels:
          instance: 'nodeexporter-9200'

    then you will see the metric like this:

    metric{instance="nodeexporter-9100"}     X
metric{instance="nodeexporter-9200"}     Y