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+---
+title: Alertmanager Cluster Failed To Send Alerts
+weight: 20
+---
+
+# Alertmanager Cluster Failed To Send Alerts
+
+## Meaning
+
+All instances failed to send notification to a critical integration. 
+
+## Impact
+
+You will not receive notification when an alert is raised.
+
+## Diagnosis
+
+No alerts are received at the integration level from the cluster. 
+
+## Mitigation
+
+Depending on the integration, correct the integration with the faulty instance (network, authorization token, firewall...)
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