Alertmanager Cluster Failed To Send Alerts

AlertmanagerClusterFailedToSendAlerts #

Meaning #

All instances failed to send notification to an integration.

Impact #

You will not receive a 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…)