# Pusher: Critical incident: Public EU cluster outage

**Summary:** Pusher reported a critical public EU cluster outage affecting customers in that region; other regions were unaffected. The incident ran from 2023-12-05 17:34 UTC to 2023-12-05 18:11 UTC, lasting 36 min. Pusher identified the issue and implemented a fix, reporting all services back online at 17:47 UTC. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2023-12-05 17:34 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/gdsy6f8y29z3](https://stspg.io/gdsy6f8y29z3)
- [Company: Pusher](https://rewindex.com/company/pusher.md)
- Versions: before (none: first archived) → after incident\_version:201/77czsxb3zsfq@a9be55b80fab
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Public EU cluster outage
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2023-12-05 17:34 UTC
```

**5. Added: Resolved time**

```diff
+ 2023-12-05 18:11 UTC
```

**6. Added: Affected components**

```diff
+ Channels presence channels, Channels REST API, Channels Stats Integrations, Channels Webhooks, Channels WebSocket client API
```

**7. Added: Update** (investigating) · 2023-12-05 17:34 UTC

```diff
+ The public EU cluster is currently experiencing an outage which affects customers in this region. For customers in other regions, there is no impact. We are actively working on restoring the public EU cluster.
```

**8. Added: Update** (identified) · 2023-12-05 17:36 UTC

```diff
+ The issue has been identified and a fix is being implemented.
```

**9. Added: Update** (monitoring) · 2023-12-05 17:47 UTC

```diff
+ The public EU cluster has been restored and all services are now back online. We will continue to monitor the cluster health.
```

**10. Added: Update** (resolved) · 2023-12-05 18:11 UTC

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

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2023-12-05 17:34 UTC | Critical incident: Public EU cluster outage (this change) | outage |

All Pusher changes: [timeline](https://rewindex.com/company/pusher/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/i0cc8eacc3599ba · Markdown: https://rewindex.com/change/i0cc8eacc3599ba.md · JSON: https://rewindex.com/api/v1/changes/i0cc8eacc3599ba · Generated 2026-10-18T02:29:47.178Z