Prometheus rules
From wikinotes
Documentation
official docs https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/
Example
# /usr/local/etc/memory_rules.yml groups: - name: available_memory rules: - record: node_available_memory_percent # metric rule-result is exposed as expr: node_memory_free_bytes / node_memory_size_bytes # PromQL query rule performs# /usr/local/etc/prometheus.yml rule_files: - "memory_rules.yml"service prometheus restart # new metric should be available