# Semaphore: Docker Hub outage affecting image push/pulls in Semaphore

- Impact (vendor’s label): major
- Status: resolved
- Started: 2025-10-20 08:44 UTC · Resolved: 2025-10-21 01:00 UTC · Duration: 16 h
- Updates: 12 · Affected components: Semaphore
- [Vendor status page: https://stspg.io/n7mj7mkrr2c1](https://stspg.io/n7mj7mkrr2c1)
- [Company: Semaphore](https://rewindex.com/company/semaphore.md)

## Part of an outage event

- [AWS us-east-1 outage, Oct 20, 2025: 141 vendors, 181 incidents](https://rewindex.com/events/2025-10-20-aws-us-east-1)
- This incident started in the same window without naming AWS (timing only, not evidence of a link). (timing only, posted +1 h 33 min vs AWS’s own post)
- Evidence: “…cing an outage, which is affecting image push/pulls in CI. We are also monitoring broader AWS service issues, which could indirectly affect some users' workloads. Image push/pulls are still being affe…”

```mermaid
flowchart LR
  root["AWS us-east-1<br/>posted 07:11 UTC"]:::root
  before["Posted before AWS did<br/>5 vendors, 4 blamed AWS<br/>Salesforce, Descope, Ashby +2"]:::blames
  root --> before
  h1["Within an hour<br/>18 vendors, 17 blamed AWS<br/>Asana, Firebolt, Monday.com +15"]:::blames
  root --> h1
  h4["1 to 4 hours later<br/>30 vendors, 29 blamed AWS<br/>SingleStore, Loops, Buildkite +27"]:::blames
  root --> h4
  later["Later<br/>45 vendors, 44 blamed AWS<br/>RudderStack, Airbyte, Unbounce +42"]:::blames
  root --> later
  p0["Twilio<br/>posted +15 min"]:::blames
  root --> p0
  k0["BigCommerce<br/>+2 h 46 min"]:::hop2
  p0 -->|"blamed Twilio"| k0
  p1["Webflow<br/>posted +4 h 37 min, did not name AWS"]:::timing
  root -.-> p1
  k1["Rootly<br/>+10 h 23 min"]:::hop2
  p1 -->|"blamed Webflow"| k1
  p2["Baseten<br/>posted +4 min"]:::blames
  root --> p2
  k2["Zed<br/>+26 h 20 min"]:::hop2
  p2 -->|"blamed Baseten"| k2
  me["Semaphore (this incident)<br/>posted +1 h 33 min"]:::me
  root -.->|"same window"| me
```

_Detected automatically from incidents that started together and named the same provider; a link means one incident named another vendor, not a confirmed cause._

## Timeline of updates

- **identified** 2025-10-20 08:44 UTC: Docker Hub is experiencing an outage, which is affecting image push/pulls in CI.  We are also monitoring broader AWS service issues, which could indirectly affect some users' workloads.
- **identified** 2025-10-20 10:29 UTC: Image push/pulls are still being affected by the Docker Hub outage. We are closely monitoring the situation. We are continuing to monitor broader AWS service issues, which could still indirectly affect some users' workloads.
- **identified** 2025-10-20 12:10 UTC: We are continuing to monitor the situation: - Image push/pulls are still being affected by the Docker Hub outage. - Broader AWS service issues could still indirectly affect some users' workloads.
- **identified** 2025-10-20 14:04 UTC: We are continuing to monitor the situation: - Image push/pulls are still being affected by the Docker Hub outage. - Broader AWS service issues could still indirectly affect some users' workloads.
- **monitoring** 2025-10-20 14:40 UTC: Issues with image push/pulls seem to be resolved. We are still closely monitoring the situation.
- **identified** 2025-10-20 16:01 UTC: Image push/pulls seem to be affected again by the ongoing Docker Hub outage. We continue to monitor the situation.
- **identified** 2025-10-20 18:01 UTC: Image push/pulls seem to be affected again by the ongoing Docker Hub outage. We continue to monitor the situation.
- **identified** 2025-10-20 19:44 UTC: Image push/pulls seem to be affected by the ongoing Docker Hub outage. We keep monitoring the situation.
- **identified** 2025-10-20 21:38 UTC: Some image push/pulls seem to be affected by the ongoing Docker Hub outage. Our team is monitoring the situation.
- **identified** 2025-10-20 23:52 UTC: Image push/pulls may be affected by the ongoing Docker Hub outage. We continue to monitor the situation.
- **monitoring** 2025-10-21 00:44 UTC: Issues with image push/pulls seem to be resolved. We are still closely monitoring the situation.
- **resolved** 2025-10-21 01:00 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2025-10-20 08:44 UTC: [Major incident: Docker Hub outage affecting image push/pulls in Semaphore](https://rewindex.com/change/i2b6aa4ae4d78aa.md)


---
Canonical: https://rewindex.com/company/semaphore/incidents/q4kzk41jqc4j · Markdown: https://rewindex.com/company/semaphore/incidents/q4kzk41jqc4j.md · JSON: https://rewindex.com/api/v1/companies/semaphore/incidents/q4kzk41jqc4j · Generated 2026-10-20T01:32:11.838Z