- Level
- confirmed
- Worst impact
- Degraded
- Down Index
- 21of 100
What to do
Check whether your product depends on ClickHouse Cloud. Check your stack
Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 5h 6m it lasted.
Anything that failed between 2026-09-22 13:19 UTC and 2026-09-22 18:25 UTC may need a replay.Subscribe to ClickHouse Cloud's feed to hear about the next one first. RSS feed
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Updates from ClickHouse Cloud 8
- investigating
We detected an issue with CHC clusters in some Azure regions. ClickHouse cloud team is investigating. Some operations might be degraded.
provider
- investigating
Only germanywestcentral Azure region is affected.
provider
- investigating
Only one Availability zone is affected in germanywestcentral Azure region. The problem affects internal component (ClickHouse Keepers). Some ClickHouse Services in this region may see increased latency on inserts or DDL queries.
provider
- investigating
The problem is caused by Azure outage in the germanywestcentral region. ClickHouse Cloud team is working with Azure support. Impact: • New ClickHouse services can't be provisioned (appear as stuck in UI). • Some services may experience higher latency due to reduced capacity.
provider
- identified
The Azure team is working on resolution of the issue. The ClickHouse Cloud team will relay any updates related to ClickHouse clusters operation. An excerpt from Azure incident status: > As per our investigation, we believe this stemmed from multiple underlying storage systems becoming unavailable at the same time, which led to attached virtual machines becoming unresponsive, restarting unexpectedly, or being temporarily unavailable.
provider
- monitoring
The issue is still present on Azure infrastructure side and ClickHouse Cloud team is actively monitoring for any impact for existing ClickHouse Clusters. Correction on earlier impact description: Provisioning of new instances is expected to work. Operations like autoscaling of the ClickHouse Keeper replicas can be stuck or slow. Latency for insert and DDL queries are not affected, thanks to cross-AZ redundancy.
provider
- monitoring
Azure support shared they are working on fixing the underlying issue, we started seeing some recovery but the incident is not completely resolved yet. We are working with Azure to get this fixed as soon as possible.
provider
- resolved
The underlying AZ has recovered and we are fully back online. Since ClickHouse cloud architecture uses 3 AZs we were operational during this outage but there might have been some degradations. Azure support shared the details of the issue as following- Between 12:04 UTC and 17:46 UTC on 22 September 2022, a platform issue resulted in an impact to the Virtual Machines (VMs) and Virtual Machine Scale Sets (VMSS) in Germany West Central. Customers may have experienced their virtual machines becoming unresponsive, restarting unexpectedly, or being temporarily unavailable during the impact window.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
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Questions about DWN-2896c4faac
Is ClickHouse Cloud still down?
No, this incident was resolved 2026-09-22 18:25 UTC. For ClickHouse Cloud's live state, see https://down.guide/clickhouse-cloud.
How long did it last?
5h 6m, from 2026-09-22 13:19 UTC to 2026-09-22 18:25 UTC, by the times ClickHouse Cloud posted.
What caused it?
ClickHouse Cloud hasn't published a root cause. If it does, it shows here.
Where does this come from?
ClickHouse Cloud's official status page, https://status.clickhouse.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.