Prometheus's Recording rules practice

Recording rules official document

As shown:

The contents of recording_rules.yml are as follows:

groups:- name: my_first_recording_rulerules:- record: node_cpu_total_used_rateexpr: (1 - sum(increase(node_cpu_seconds_total{mode="idle"}[1m])) by (instance_id) / sum(increase(node_cpu_seconds_total[1m])) by (instance_id) ) * 100

prometheus.yml configuration recording rules file path:

You can view, the indicators have been pre-calculated, as shown in the figure: