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ClickHouse Cloud: We are investigating an issue in Azure eastus2 region, impacting replicas in one specific Availability Zone

Affected components: eastus2

Timeline of updates

1. investigating2026-08-02 14:44 UTC

   We are aware about service degradation in Azure eastus2 region, impacting only one Availability Zone. New service provisioning time might be delayed. Customers may see increased latency.

2. identified2026-08-02 15:42 UTC

   We are applying a change, unblocking the pending replicas. We already see sign of improvements for services that have the change applied.

3. identified2026-08-02 16:16 UTC

   We still see problematic compute nodes provided by CSP, so remediation may take more time. We working closely with Azure support.

4. investigating2026-08-02 17:02 UTC

   We are still working closely with CSP support to figure out the path forward. The Azure support confirmed there is an issue with some components provided by CSP, investigation ongoing.

5. monitoring2026-08-02 19:05 UTC

   The issue seems to be resolved on the Azure side. We are monitoring before we resolve the issue.

6. resolved2026-08-02 19:34 UTC

   The issue is now resolved. All services are back to normal.

Impact, status and times are the vendor’s own, as last archived. View on status.clickhouse.com (opens in new tab). ClickHouse Cloud profile · Recent ClickHouse Cloud incidents · Markdown · JSON