ApsaraDB for ClickHouse:Modify the scaling settings of an ApsaraDB for ClickHouse Enterprise Edition cluster

Overview

Enterprise Edition clusters automatically scale their compute resources up or down based on the workload. The elastic settings allow you to configure a scaling range for the computing resources. The automatic scaling is implemented in increments of compute capacity units (CCUs). Based on real-time demand, the cluster will automatically add or remove CCUs, always staying within the minimum and maximum limits you configure.

Prerequisites

An ApsaraDB for ClickHouse Enterprise Edition cluster is created. For more information, see Create an ApsaraDB for ClickHouse cluster.

Usage notes

• The computing resources after scale-down cannot be smaller than the configured minimum number of CCUs, and the computing resources after scale-up cannot be greater than the configured maximum number of CCUs.

• The scaling of computing resources for an ApsaraDB for ClickHouse Enterprise Edition cluster takes effect immediately. Your business is not affected.

Billing rules

You are not charged for modifying the scaling range for the computing resources. The computing fees are determined by the usage of CCUs.

Procedure

1. Log on to the ApsaraDB for ClickHouse console.

2. In the top navigation bar, select the region where the cluster that you want to manage is deployed.

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

4. In the Actions column for the target instance, click Change Cluster Configuration and select Scale Up or Scale Down.

5. In the pop-up dialog box, set Minimum Reserved Specs per Server and Maximum Specs per Server based on your business requirements.

6. Click OK.

   Important

   The state of the cluster changes to Changing. If the state changes from Changing to Running, the modification of the scaling settings is complete.