Increased timeout errors in alert rule evaluations (AWS Germany, prod-eu-west-2)

Incident Report for Grafana Cloud

Resolved

This incident has been resolved.

Posted Oct 21, 2026 - 13:26 UTC

Monitoring

Remediation measures have been applied, and we are monitoring the recovery.

Posted Oct 21, 2026 - 13:12 UTC

Identified

The root cause of the issue has been indentified and we are working on the remediation steps.

Posted Oct 21, 2026 - 12:12 UTC

Investigating

Since approximately 20:30 UTC on October 20, we have observed an increase in alert rule evaluation errors affecting rules that query Grafana Cloud Prometheus (Mimir) data sources in Cluster AWS Germany.
Our engineering team is actively investigating and working on remediation.

Posted Oct 21, 2026 - 11:48 UTC

This incident affected: Alerting and SLO (AWS Germany - prod-eu-west-2: Rule Evaluation).