ClickHouse Cloud outage: CDC ClickPipes stuck in maintenance state

1. resolvedJul 22, 2026, 14:36 UTC

   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.

2. monitoringJul 22, 2026, 13:39 UTC

   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.

3. identifiedJul 22, 2026, 13:05 UTC

   Most services have fully recovered. Continuing to roll out the fix to remaining 4 services (all in `eu-central-1`, `us-east-2`).

4. identifiedJul 22, 2026, 12:36 UTC

   Services in `eu-central-1` have recovered. We're in the process of manually recovering ~20 services in other regions.

5. investigatingJul 22, 2026, 11:53 UTC

   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.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in ClickHouse Cloud's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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How often does ClickHouse Cloud have incidents?

ClickHouse Cloud reported 16 incidents in the last 90 days, 2 of them major or critical. A typical incident lasted 2h 28m. See ClickHouse Cloud's uptime and incident history