PrometheusRuleFailures # Meaning # Prometheus is failing rule evaluations. Prometheus rules are incorrect or failed to calculate. Impact # Metrics and alerts may be missing or inaccurate. Diagnosis # Your best starting point is the rules page of the Prometheus UI (:9090/rules). It will show the error. You can also evaluate the rule expression yourself, using the UI, or maybe using PromLens to help debug expression issues.
