# Nebius: Region us-central1 partial degradation

- Impact (vendor’s label): major
- Status: postmortem
- Started: 2026-08-19 10:43 UTC · Resolved: 2026-08-20 08:16 UTC · Duration: 22 h
- Updates: 13 · Affected components: Object Storage, US-CENTRAL1 - Object Storage, US-CENTRAL1 - Virtual Private Cloud (Networking), Virtual Private Cloud (Networking), Token Factory, US-CENTRAL1 - Token Factory, Serverless AI, US-CENTRAL1 - Serverless AI, Compute Cloud, US-CENTRAL1 - Compute Cloud, Managed Service for MLflow, US-CENTRAL1 - Managed Service for MLflow, Managed Service for SkyPilot, US-CENTRAL1 - Managed Service for SkyPilot, Managed Service for Kubernetes®, US-CENTRAL1 - Managed Service for Kubernetes®, Managed Service for PostgreSQL®, US-CENTRAL1 - Managed Service for PostgreSQL®
- [Vendor status page: https://stspg.io/cch1mzfkh090](https://stspg.io/cch1mzfkh090)
- [Company: Nebius](https://rewindex.com/company/nebius.md)

## Timeline of updates

- **investigating** 2026-08-19 10:43 UTC: We are currently investigating this issue.
- **identified** 2026-08-19 11:18 UTC: The root cause has been identified as overheating hardware. GPU performance is impacted, and some nodes may be unavailable.
- **identified** 2026-08-19 12:20 UTC: We are still experiencing temperature issues in the us-central1. Team is working on it
- **identified** 2026-08-19 12:52 UTC: The root cause was fixed, and the situation is stabilizing. The services are recovering.
- **identified** 2026-08-19 13:49 UTC: Services are gradually continuing to recover.
- **identified** 2026-08-19 15:06 UTC: Services are still gradually continuing to recover. Some virtual machines are already running, but not all of them.
- **identified** 2026-08-19 16:00 UTC: Services are still gradually continuing to recover. Many of the virtual machines are already running, but not all of them.
- **identified** 2026-08-19 17:26 UTC: Most nodes are operating normally. The Managed Service for Kubernetes® is experiencing a partial outage, and the team is actively working to restore it.
- **identified** 2026-08-19 19:13 UTC: Most nodes are operating normally. The Managed Service for Kubernetes® is still degraded, but the situation is improving.
- **identified** 2026-08-19 20:50 UTC: The Managed Service for Kubernetes is nearly fully restored, though a subset of nodes remains unavailable.
- **identified** 2026-08-19 21:59 UTC: Most critical issues have been resolved and the region is operational, though a subset of nodes remains unavailable.
- **resolved** 2026-08-20 08:16 UTC: This incident has been resolved.
- **postmortem** 2026-09-01 09:15 UTC: \[https://nebius.com/blog/posts/incident-post-mortem-analysis-us-central1-service-disruption-on-august-19\](https://nebius.com/blog/posts/incident-post-mortem-analysis-us-central1-service-disruption-on-august-19)

## Rewindex changes for this incident

- 2026-08-19 10:43 UTC: [Major incident: Region us-central1 partial degradation](https://rewindex.com/change/i7675cde516f61f.md)


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Canonical: https://rewindex.com/company/nebius/incidents/kk5ry8fr08g5 · Markdown: https://rewindex.com/company/nebius/incidents/kk5ry8fr08g5.md · JSON: https://rewindex.com/api/v1/companies/nebius/incidents/kk5ry8fr08g5 · Generated 2026-10-19T23:15:37.303Z