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Rule in Prometheus

Prometheus uses rules to:

• create new time series
• and to generate alert

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Configuration

Prometheus.yml

• evaluation_interval controls how often Prometheus will evaluate rules

global:  
  evaluation_interval: 15s 

• rule_files block specifies the location of any rules we want the Prometheus server to load

rule_files:
  # - "first.rules"
  # - "second.rules"