# Nebius: Major incident: InfiniBand connectivity issues for GPU clusters in eu-west2

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2026-10-15 05:34 UTC · Detected: 2026-10-19 17:03 UTC
- [Source: https://stspg.io/tvp525c6c7lf](https://stspg.io/tvp525c6c7lf)
- [Company: Nebius](https://rewindex.com/company/nebius.md)
- Versions: before (none: first archived) → after incident\_version:681/sdb2htxgyprr@c9692d6e1174
- Change 1 of 1 for this incident

Incident page (full timeline): [InfiniBand connectivity issues for GPU clusters in eu-west2](https://rewindex.com/company/nebius/incidents/sdb2htxgyprr.md)
## What changed

**1. Added: Title**

```diff
+ InfiniBand connectivity issues for GPU clusters in eu-west2
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-15 05:34 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-15 16:12 UTC
```

**6. Added: Affected components**

```diff
+ Compute Cloud, EU-WEST2 - Compute Cloud
```

**7. Added: Update** (investigating) · 2026-10-15 05:34 UTC

```diff
+ We are currently investigating this issue.
```

**8. Added: Update** (investigating) · 2026-10-15 09:32 UTC

```diff
+ We have identified the root cause and taken the necessary corrective actions to address the issue. We are monitoring the service to confirm recovery.
```

**9. Added: Update** (monitoring) · 2026-10-15 13:13 UTC

```diff
+ We have taken corrective actions to stabilize the affected infrastructure and are working to address the root cause. Recovery is still in progress, and we are closely monitoring service health. We will confirm mitigation once recovery and stability checks are complete.
```

**10. Added: Update** (resolved) · 2026-10-15 16:12 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-15 05:34 UTC | Major incident: InfiniBand connectivity issues for GPU clusters in eu-west2 (this change) | major |

All Nebius changes: [timeline](https://rewindex.com/company/nebius/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i0acc1685a11607 · Markdown: https://rewindex.com/change/i0acc1685a11607.md · JSON: https://rewindex.com/api/v1/changes/i0acc1685a11607 · Generated 2026-10-19T23:13:38.332Z