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.
Posted Jun 05, 2026 - 14:02 UTC
This incident affected: Alerting and SLO (AWS Australia - prod-ap-southeast-2: Alertmanager, AWS Brazil - prod-sa-east-1: Alertmanager, AWS Canada - prod-ca-east-0: Alertmanager, AWS Germany - prod-eu-west-2: Alertmanager, AWS UAE - prod-me-central-1: Alertmanager, AWS Singapore - prod-ap-southeast-1: Alertmanager, AWS Sweden - prod-eu-north-0: Alertmanager, AWS US East - prod-us-east-0: Alertmanager, AWS US West - prod-us-west-0: Alertmanager, Azure Netherlands - prod-eu-west-3: Alertmanager, Azure US Central - us-central2: Alertmanager, GCP Australia - prod-au-southeast-0: Alertmanager, GCP Belgium - prod-eu-west-0: Alertmanager, GCP Brazil - prod-sa-east-0: Alertmanager, GCP India - prod-ap-south-0: Alertmanager, GCP Singapore - prod-ap-southeast-0: Alertmanager, GCP UK - prod-gb-south-0: Alertmanager, GCP US Central - prod-us-central-0: Alertmanager).