# Prometheus Datasource Errors/Outage in prod-us-east-0

- Provider: [Grafana Cloud](https://down.guide/providers/grafana-cloud)
- Confidence: Confirmed
- Impact: Partial outage
- lasted 2h 37m
- started 2026-05-27 20:22 UTC
- AWS US East - prod-us-east-0: Querying
- us, us-east-0
- id: DWN-5c1944d6ed
- Official page: https://stspg.io/n5wtxwz42q40

## Root cause
> The service is recovering without any required customer action, and our team continues to monitor stability while we investigate the underlying cause.

[Postmortem](https://stspg.io/n5wtxwz42q40)

## Updates from Grafana Cloud
### 2026-05-27 20:22 UTC: investigating
We’re currently investigating an issue affecting Prometheus datasources causing 500 internal or Unexpected errors. Our team is actively working to identify the cause. Thank you for your patience.

### 2026-05-27 21:36 UTC: investigating
We continue to investigate an issue affecting Prometheus datasources causing intermittent timeouts and unexpected errors, primarily impacting alert rule evaluations. 
Our team is actively working to identify the cause. Thank you for your patience.

### 2026-05-27 21:57 UTC: investigating
We are seeing recovery across affected Prometheus datasources, and error rates have significantly improved.
The service is recovering without any required customer action, and our team continues to monitor stability while we investigate the underlying cause.
We’ll provide another update as we learn more.

### 2026-05-27 22:59 UTC: resolved
This incident has been resolved. Thank you for your patience.

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