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    ApsaraDB for ClickHouse:Start and stop a cluster

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    ApsaraDB for ClickHouse:Start and stop a cluster

    Last Updated:May 13, 2026

    This topic describes how to start and stop an Alibaba Cloud ClickHouse Enterprise Edition cluster to help you reduce costs.

    Background information

    Alibaba Cloud ClickHouse Enterprise Edition offers a start/stop feature to reduce costs. If your cluster is inactive (has no read/write requests or merge tasks), you can suspend it. A suspended cluster consumes no computing resources, and its compute capacity unit (CCU) count is zero. As a result, you are not charged for computing resources. When you need the cluster to process read/write requests or merge tasks, you can start it. The cluster then resumes normal operation, and billing for computing resources also resumes.

    Prerequisites

    You have an Alibaba Cloud ClickHouse Enterprise Edition cluster. For more information, see Create a cluster.

    Usage notes

    • While a cluster is in the Suspending or Starting state, it only accepts data access requests. You cannot perform management operations, such as cluster scaling or restarting the cluster.

    • When a cluster is in the Suspended state, data access requests time out.

    • Starting a cluster takes about 5 minutes. Your application must be able to tolerate this initial request latency.

    • The maximum suspension duration is 30 days. If you do not start the cluster within 30 days, the system automatically starts it for necessary maintenance. You will be notified by internal messages, text messages, and emails after the automatic start.

    Suspend a cluster

    1. Log on to the Alibaba Cloud ClickHouse console.

    2. In the top-left corner of the page, select the region where the instance is located.

    3. On the Clusters page, click the Enterprise Edition Clusters tab.

    4. In the Actions column of the target instance, click image.png> Suspend.

    5. In the Suspend Cluster dialog box, click OK.

      Note

      The cluster takes about 5 minutes to suspend. The process is complete when the cluster status changes from Suspending to Suspended.

    Start a cluster

    1. Log on to the Alibaba Cloud ClickHouse console.

    2. In the top-left corner of the page, select the region where the instance is located.

    3. On the Clusters page, click the Enterprise Edition Clusters tab.

    4. In the Actions column of the target instance, click image.png> Start.

    5. In the Start Cluster dialog box, click OK.

      Note

      The cluster takes about 5 minutes to start. The process is complete when the cluster status changes from Starting to Running.