Prometheus

• Prometheus is new kid in monitoring where he keeps the data in timeseries. Its pretty much same as icinga except more robust and easier to understand.
• My setup includes 2 VM machines (<3 vagrant)
  1. VM 1: Debian -> IP based addition
  2. VM 2: Debian -> IP based addition
• My plan is to use VM 1 to monitor multiple nodes.
• Install prometheus and node exporter on vm1, node exporter in 2.
• Setup the /etc/prometheus/prometheus.yml ```

  my global config

  global: scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute. evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.

  scrape_timeout is set to the global default (10s).

Alertmanager configuration

alerting: alertmanagers:

• static_configs:
  • targets:

    - alertmanager:9093

Load rules once and periodically evaluate them according to the global ‘evaluation_interval’.

rule_files: # - “first_rules.yml” # - “second_rules.yml”

A scrape configuration containing exactly one endpoint to scrape:

Here it’s Prometheus itself.

scrape_configs: # The job name is added as a label job=<job_name> to any timeseries scraped from this config.

• job_name: ‘prometheus’

  metrics_path defaults to ‘/metrics’

  scheme defaults to ‘http’.

  static_configs:

  • targets: [‘localhost:9090’]
  • targets: [‘localhost:9100’]
  • targets: [‘192.168.0.101:9100’] ```