# MongoDB Atlas: AWS Cluster DNS Changes Degraded Performance

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-05-07 15:17 UTC · Resolved: 2026-05-07 22:15 UTC · Duration: 7.0 h
- Updates: 7 · Affected components: MongoDB Atlas for Government
- [Vendor status page: https://stspg.io/ryk5cwxqt8h4](https://stspg.io/ryk5cwxqt8h4)
- [Company: MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## Summary

MongoDB Atlas for Government had a major AWS cluster DNS degradation from 2026-05-07 15:17 UTC to 2026-05-07 22:15 UTC, lasting 6 h 57 min; cluster topology changes could be delayed or fail. MongoDB patched bad metadata causing ACME-related DNS issues and confirmed DNS and cluster updates were healthy. _(machine-written, sol)_
## Timeline of updates

- **identified** 2026-05-07 15:17 UTC: DNS changes for AWS clusters are currently degraded. We've identified the issue and are pushing out a patch.
- **identified** 2026-05-07 15:20 UTC: DNS changes for AWS clusters are currently degraded. Cluster topology modifications may be delayed or not able to complete successfully. We've identified the issue and are pushing out a patch.
- **identified** 2026-05-07 16:58 UTC: Mitigation is in progress; recovery for DNS operations and downstream cluster topology changes has begun.
- **investigating** 2026-05-07 17:50 UTC: We are still seeing cases where new cluster update requests are failing to go through due to ACME related DNS issues. We are actively investigating this issue.
- **monitoring** 2026-05-07 19:47 UTC: We've identified a bad piece of metadata causing DNS issues. We've since patched this metadata and are seeing recovery in ACME updates for cluster topology changes. We will continue to monitor recovery.
- **monitoring** 2026-05-07 19:47 UTC: We are continuing to monitor for any further issues.
- **resolved** 2026-05-07 22:15 UTC: DNS updates for ACME are confirmed healthy. Cluster updates are now proceeding as expected.

## Rewindex changes for this incident

- 2026-05-07 15:17 UTC: [Major incident: AWS Cluster DNS Changes Degraded Performance](https://rewindex.com/change/id73179968fee27.md)


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Canonical: https://rewindex.com/company/mongodb-atlas/incidents/1t1nk96wgyx3 · Markdown: https://rewindex.com/company/mongodb-atlas/incidents/1t1nk96wgyx3.md · JSON: https://rewindex.com/api/v1/companies/mongodb-atlas/incidents/1t1nk96wgyx3 · Generated 2026-10-18T10:43:04.944Z