Major incident

ClickHouse Cloud: CDC ClickPipes stuck in maintenance state

Current status of ClickHouse Cloud: Operational — live ClickHouse Cloud status

Timeline

1. Jul 22, 2026, 11:53 UTC
   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.
2. Jul 22, 2026, 12:36 UTC
   identified
   Services in `eu-central-1` have recovered. We're in the process of manually recovering ~20 services in other regions.
3. Jul 22, 2026, 13:05 UTC
   identified
   Most services have fully recovered. Continuing to roll out the fix to remaining 4 services (all in `eu-central-1`, `us-east-2`).
4. Jul 22, 2026, 13:39 UTC
   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.
5. Jul 22, 2026, 14:36 UTC
   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.

Updates as published by ClickHouse Cloud.