Resolved after 58 minutes, affecting AWS Australia - prod-au-southeast-1: Alertmanager and AWS Brazil - prod-sa-east-1: Alertmanager and 1 more, on June 5, 2026.
We have identified an issue causing Silences to not work as expected in the Cloud (Mimir) Alertmanager. Grafana Alertmanager is working ok, this is only affecting Data source-managed alerts.
Affected components
AWS Australia - prod-au-southeast-1: AlertmanagerAWS Brazil - prod-sa-east-1: AlertmanagerAWS Canada - prod-ca-east-0: AlertmanagerAWS Germany - prod-eu-west-2: AlertmanagerAWS UAE - prod-me-central-1: AlertmanagerAWS Singapore - prod-ap-southeast-1: AlertmanagerAWS Sweden - prod-eu-north-0: AlertmanagerAWS US East (OH) - prod-us-east-0: AlertmanagerAWS US West - prod-us-west-0: AlertmanagerAzure Netherlands - prod-eu-west-3: Alertmanager
Update timeline
- identified Jun 05, 2026, 02:02 PM UTC
We have identified an issue causing Silences to not work as expected in the Cloud (Mimir) Alertmanager. Grafana Alertmanager is working ok, this is only affecting Data source-managed alerts.
- resolved Jun 05, 2026, 03:01 PM UTC
This incident has been resolved.
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