PrometheusErrorSendingAlertsToSomeAlertmanagers # Meaning # Prometheus has encountered more than 1% errors sending alerts to a specific Alertmanager. Impact # Some alerts may be lost. Diagnosis # Check connectivity issues between Prometheus and AlertManager. Check NetworkPolicies, network saturation. Check if AlertManager is not overloaded or has not enough resources. Mitigation # Set multiple AlertManager instances, spread them across nodes.
