# CockroachDB: Major incident: Cluster connectivity and execution issues

**Summary:** CockroachDB reported a major outage preventing some Basic and Standard clusters in eu-west1 from connecting or executing queries. It ran from 2026-08-04 23:46 UTC to 2026-08-05 19:50 UTC (20 h 3 min). Immediate impact was mitigated by 2026-08-05 03:55 UTC; resolution followed monitoring confirming stability, with no root cause stated. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-08-04 23:46 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/3yxk0sqch71r](https://stspg.io/3yxk0sqch71r)
- [Company: CockroachDB](https://rewindex.com/company/cockroachdb.md)
- Versions: before (none: first archived) → after incident\_version:138/2vhw363pjysp@f5be01129018
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Cluster connectivity and execution issues
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-08-04 23:46 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-08-05 19:50 UTC
```

**6. Added: Affected components**

```diff
+ CockroachDB Basic/Standard
```

**7. Added: Update** (investigating) · 2026-08-04 23:46 UTC

```diff
+ We are investigating an issue affecting a subset of Free Tier clusters in eu-west-1, where some clusters may be unable to connect or execute queries. Teams have been notified and are actively working on mitigation.
```

**8. Added: Update** (investigating) · 2026-08-04 23:47 UTC

```diff
+ We are investigating an issue affecting a subset of Basic clusters in eu-west1, where some clusters may be unable to connect or execute queries. Teams have been notified and are actively working on mitigation.
```

**9. Added: Update** (investigating) · 2026-08-04 23:52 UTC

```diff
+ We are investigating an issue affecting a subset of Basic and Standard clusters in eu-west1, where some clusters may be unable to connect or execute queries. Teams have been notified and are actively working on mitigation.
```

**10. Added: Update** (monitoring) · 2026-08-05 03:55 UTC

```diff
+ Teams have mitigated the immediate active impact, but work continues to ensure the problem does not recur and to fully understand the root cause. For now we will continue to monitor the situation. If you continue to experience impacts, please reach out to Support.
```

**11. Added: Update** (resolved) · 2026-08-05 19:50 UTC

```diff
+ Following an extended period of monitoring, the team has confirmed that the cluster remains healthy and stable.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-08-04 23:46 UTC | Major incident: Cluster connectivity and execution issues (this change) | outage |

All CockroachDB changes: [timeline](https://rewindex.com/company/cockroachdb/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/i9773c75d0fc00d · Markdown: https://rewindex.com/change/i9773c75d0fc00d.md · JSON: https://rewindex.com/api/v1/changes/i9773c75d0fc00d · Generated 2026-10-18T03:55:41.326Z