Use the Alert Send Error alert in Mini DBA to monitor MySQL and MariaDB instances and make this condition visible before it becomes a wider database incident.
Mini DBA describes this alert as: Raises when Mini DBA cannot send alert notifications. The default evaluation frequency is Every 1 minute, so the alert is intended to be close enough to operational reality for live triage.
This alert protects operational visibility. It warns when automation or notification paths fail, which can otherwise hide the real incident until a user reports a problem.
Enable it on any monitored MySQL and MariaDB instance where this condition would require an administrator to investigate or communicate with the application team. Tune noisy development systems after you have a short baseline.
Threshold meaning: alert delivery failures. This alert is not primarily driven by a numeric threshold in Mini DBA. Tune the schedule, scope, severity, and notification route so that the alert matches the importance of the instance. Use higher thresholds on batch-heavy, development, or intentionally bursty systems where brief pressure is expected. Use lower thresholds on latency-sensitive production systems, small instances with little headroom, and services with strict recovery or availability commitments.
Check the failed job or notification target, verify credentials and network access, correct the schedule or destination, and send a test notification so the monitoring path is proven before closing the incident.
If the alert creates repeated noise, review whether it is enabled on the correct instances, whether maintenance windows are configured, and whether the minor and major routes match the real business impact. Keep enough history to prove the new setting before changing it broadly.