ClickHouse incident

CDC ClickPipes stuck in maintenance state

Minor Resolved View vendor source →

ClickHouse experienced a minor incident on July 22, 2026 affecting AWS ap-northeast-2 and AWS eu-west-1 and 1 more component, lasting —. The incident has been resolved; the full update timeline is below.

Started
Jul 22, 2026, 02:36 PM UTC
Resolved
Jul 22, 2026, 02:36 PM UTC
Duration
—
Detected by Pingoru
Jul 22, 2026, 02:36 PM UTC

Affected components

AWS ap-northeast-2AWS eu-west-1AWS us-east-2AWS ap-southeast-2AWS eu-central-1AWS ca-central-1AWS il-central-1

Update timeline

  1. investigating Jul 22, 2026, 11:53 AM UTC

    Status: Investigating As part of our weekly upgrade process, CDC ClickPipes in eu-central-1 became stuck in maintenance state. The team is working on a mitigation. Affected components AWS eu-central-1 (Partial outage)

  2. identified Jul 22, 2026, 12:36 PM UTC

    Status: Identified Services in eu-central-1 have recovered. We're in the process of manually recovering ~20 services in other regions. Affected components AWS us-east-2 (Partial outage) AWS ap-southeast-2 (Partial outage) AWS ap-northeast-2 (Partial outage) AWS eu-west-1 (Partial outage) AWS ca-central-1 (Partial outage) AWS il-central-1 (Partial outage) AWS eu-central-1 (Operational)

  3. identified Jul 22, 2026, 01:05 PM UTC

    Status: Identified Most services have fully recovered. Continuing to roll out the fix to remaining 4 services (all in eu-central-1, us-east-2). Affected components AWS us-east-2 (Partial outage) AWS ap-southeast-2 (Operational) AWS ap-northeast-2 (Operational) AWS eu-west-1 (Operational) AWS ca-central-1 (Operational) AWS il-central-1 (Operational) AWS eu-central-1 (Partial outage)

  4. monitoring Jul 22, 2026, 01:39 PM UTC

    Status: Monitoring All services have recovered; we will continue monitoring the affected nodes and consolidating our findings. Please reach out to our support team to request access to the RCA, when available. Affected components AWS il-central-1 (Operational) AWS eu-central-1 (Operational) AWS us-east-2 (Operational) AWS ap-southeast-2 (Operational) AWS ap-northeast-2 (Operational) AWS eu-west-1 (Operational) AWS ca-central-1 (Operational)

  5. resolved Jul 22, 2026, 02:36 PM UTC

    Status: Resolved The CDC ClickPipes upgrade rollout remains on hold while we confirm we can safely proceed without triggering the underlying pod networking failure mode that triggered the incident. Affected components AWS eu-central-1 (Operational) AWS us-east-2 (Operational) AWS ap-southeast-2 (Operational) AWS ap-northeast-2 (Operational) AWS eu-west-1 (Operational) AWS ca-central-1 (Operational) AWS il-central-1 (Operational)