ClickHouse Cloud Outage History

43 incidents recorded over the last 365 days, 43 of them resolved. Durations are measured from when PulsAPI first saw the problem to when it cleared, which is usually longer than the vendor's own figure.

Live ClickHouse Cloud status93.72% uptime history

Every Recorded ClickHouse Cloud Incident

ClickHouse Cloud incidents, newest first, with date, duration and status.
DateIncidentDurationStatus
Aug 23, 2026Slow provisioning times of services in GCP europe-west4 regionIssue was resolved. Services are provisioning successfully.32 minResolved
Aug 17, 2026Provisioning of new CDC pipes for Postgres might be delayed or failingThis issue has been resolved. New CDC pipes for Postgres are provisioning normally.1h 53mResolved
Aug 14, 2026Network connectivity issue in AWS us-east-1This issue has been resolved. Connectivity has returned to normal.22 minResolved
Aug 2, 2026We are investigating an issue in Azure eastus2 region, impacting replicas in one specific Availability ZoneThe issue is now resolved. All services are back to normal.4h 49mResolved
Jul 24, 2026Monitoring and billing impact on customer services in ap-southeast-1Backfill of data for ap-southeast-1 is complete.3h 26mResolved
Jul 22, 2026CDC ClickPipes stuck in maintenance stateThe 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.2h 42mResolved
Jul 15, 2026AWS eu-central-1 performance degradationAWS has mitigated the disruption affecting the eu-central-1 availability zone. We will continue monitoring to ensure stability.2h 25mResolved
Jul 8, 2026Cloud console UI downThe Cloud Console is back up.5 minResolved
Jul 6, 2026Slow provisioning and operations in AWS us-east-1 regionThe incident was resolved and we don't see any impact in us-east-1 region anymore. For details, please refer to the AWS Health status page…2h 29mResolved
Jul 1, 2026Issue with creating new ClickPipes in GCP regionsThe fix was applied and we see the issue is not reproducing anymore.19 minResolved
Jun 5, 2026Prometheus metrics endpoint missing per-server metriThe customer-facing Prometheus metrics endpoint missing all per-server metrics and is only returning Cloud-infra metrics-3251 minResolved
Jun 1, 2026Connectivity issues in AWS eu-west-1 regionIssue is resolved.5h 7mResolved
May 28, 2026New service provisioning may fail in AzureService provisioning is working, but some users may intermittently see an error message stating: _“This service name is already in use.”_ This error is transient. If you encounter it, please refresh the page -your…122h 53mResolved
May 27, 2026ClickHouse Agents Login IssuesSome users may have been unable to log in to ClickHouse Agents due to an overly broad login rate limit. A configuration change was rolled out, access has been confirmed restored, and no customer data or ClickHouse…1h 22mResolved
May 22, 2026Capacity issues in AWS us-east-1 region affecting provisioning timesAffected instances have been corrected in the AWS us-east-1 region. We apologize for the disruption this issue caused. We are committed to the reliability of all ClickHouse Cloud services and appreciate your…39 minResolved
May 18, 2026GCP us-east1 capacity constraints impacting cluster operationsNo more capacity issues observed for us-east1 region. Provisioning and scaling should work as usual.54h 1mResolved
May 8, 2026Increased Error Rate and Latency on AWS Region (US-EAST-1)AWS has mitigated the disruption affecting the US-EAST-1 availability zone. We will continue monitoring to ensure stability.31h 2mResolved
May 5, 2026Azure new services impactedWe have resolved the issue and are no longer seeing impact to services2h 10mResolved
Apr 28, 2026Degraded connectivity affecting us-east-2We have resolved the incident.56 minResolved
Apr 19, 2026Capacity constraints for new workloads on GCP us-east1Incident has been resolved32h 39mResolved
Apr 17, 2026Degraded provisioning times and slower scaling opreations in GCP us-central1 regionWe can confirm the issue is fully resolved. The ClickHouse team is taking additional measures to prevent similar failure modes in future.20h 1mResolved
Apr 16, 2026Unable to edit service scaling settings and delete servicesFix has been applied on all regions.1h 44mResolved
Apr 8, 2026Creation of new instances in AWS is delayed or stuckThis issue is resolved. External-DNS has been scaled for all impacted regions.6h 15mResolved
Mar 16, 2026ClickStack UI is not loadingThe incident was caused by an overloaded database. The instance was scaled up. It is stable again now. We are investigating heavy queries and will apply improvements.1h 31mResolved
Mar 3, 2026Resolved – Operational Impact in ClickPipesThe operational impact affecting **ClickPipes** in the **us-east-1** region has been fully resolved. All systems are operating normally, including ingestion and operational functionality. We will continue to monitor…2h 20mResolved
Mar 1, 2026Full outage on AWS me-central-1 regionClickHouse Cloud no longer supports [AWS me-central-1](https://health.aws.amazon.com/health/status?eventID=arn:aws:health:me-central-1::event/MULTIPLE_SERVICES/AWS_MULTIPLE_SERVICES_OPERATIONAL_ISSUE/AWS_MULTIPLE_SERVICE…1963h 37mResolved
Feb 27, 2026An issue with unidling ClickHouse instances in Azure regionsAll services stuck in waking in all azure regions are started now.1h 42mResolved
Feb 21, 2026Newly created instances in AWS us-east-1 are stuck provisioning or have wrong configurationAll systems operational. We apologize for the disruption this issue caused. We are committed to the reliability of all ClickHouse Cloud services and appreciate your understanding as we continue to improve our systems…2h 36mResolved
Feb 12, 2026Partial outage in ClickPipes services (CDC ClickPipes)After verifying that all affected ClickPipes have recovered, the incident can be declared as resolved. We will be sharing an RCA in the next few days with the affected customers. We sincerely apologize for the…1h 38mResolved
Jan 31, 2026Elevated error rate in AWS We have confirmed that all systems are stable and operating normally. The networking configuration has been fully restored across all regions, and we have implemented additional monitoring and safeguards to prevent…1h 48mResolved
Jan 30, 2026AWS ap-south-1 degraded operationsThe issue is fully resolved. The latest data in ControlPlane UI monitoring dashboards was backfilled and should be available. The issue seems to be related to networking issues on underlying VMs. Team is investigating…1h 32mResolved
Jan 26, 2026Issues with Cloud Console AuthenticationWe have fixed the issue in authentication.11 minResolved
Jan 23, 2026Degraded performance of service level operations in Azure germanywestcentral regionThe issue has been resolved, and the Azure germanywestcentral region is fully operational.13h 1mResolved
Dec 15, 2025Newly created ClickPipes for object-storage data not ingesting dataClickHouse has confirmed that this ClickPipes incident has been resolved. If you have a ClickPipe that was created today, December 15 2025, between 15:09 UTC and 19:57 UTC, your ClickPipe will likely need to be…2h 55mResolved
Nov 20, 2025Investigating failed ClickPipesWe have restarted any failed ClickPipes from a restart of an infrastructure component.56 minResolved
Nov 14, 2025Increased latency on the public API1h 20mResolved
Nov 12, 2025Increased latency and error rate for prometheus endpoint (ClickPipes only)27 minResolved
Nov 7, 2025Some object storage ClickPipes are failing3h 3mResolved
Nov 4, 2025AWS us-east-1 DNS issue-55 minResolved
Oct 20, 2025Partial outage across all regions for ClickPipes CDC3h 17mResolved
Oct 20, 2025AWS outage in us-east-1 is causing service disruption24h 7mResolved
Sep 29, 2025AWS us-east-2 connectivity issues54 minResolved
Sep 24, 2025Cloud Console degradation3h 49mResolved

How to Read This ClickHouse Cloud Incident Log

Each row is an incident PulsAPI observed, not a summary written afterwards. The duration is wall-clock time between the first failing check and the first clean one, so it includes the window before ClickHouse Cloud acknowledged anything. Vendor post-mortems typically measure from acknowledgement, which is why their numbers are usually shorter.

Incidents still open have no duration yet and are listed as ongoing rather than being given a running total. The archive covers the last 365 days; anything older has aged out of the window rather than never having happened.

The longest single ClickHouse Cloud outage in this window ran 81d 19h, against a mean recovery of 2d 8h. If you depend on ClickHouse Cloud in a customer-facing path, the longest figure is the one to design around. The mean is what happens on a normal bad day; the maximum is what happens on the worst one.