Check ClickHouse's own status page at https://status.clickhouse.com for the live state. This page shows ClickHouse's incident history from that page; the most recent incident started 2026-09-23: "We are investigating an issue affecting Azure eastus2 region".
How often does ClickHouse have outages?
ClickHouse posted 16 incidents in the last 90 days and 25 in the last year, 3 of them major or critical in the last 90 days. The median incident lasted 2h 28m.
When was ClickHouse's last major outage?
2026-09-15: "ClickPipes failing on Kinesis in AWS us-east-1", lasting 29h 46m.
What usually causes ClickHouse incidents?
Where ClickHouse explained the cause, the most common was capacity and load (3 incidents). Most status updates do not name a cause.
From vendors' own status pages and disclosures. Times as reported. Logos via logo.dev; trademarks belong to their owners.
Weekly: the week's major outages, postmortems and breaches, Saturday mornings.
