ApsaraDB for ClickHouse Enterprise Edition clusters automatically scale compute resources up or down based on workload. This topic describes how to set the scaling range for an Enterprise Edition cluster.
How it works
Elastic scaling adjusts compute resources in increments of compute capacity units (CCUs). Based on real-time demand, the cluster adds or removes CCUs automatically, staying within the minimum and maximum limits you configure.
Scaling takes effect immediately and does not affect your business.
Prerequisites
Before you begin, ensure that you have:
An ApsaraDB for ClickHouse Enterprise Edition cluster. To create one, see Create a cluster.
Billing
Modifying the scaling range is free of charge. Compute fees are based on actual CCU usage.
Configure the scaling range
Log on to the ApsaraDB for ClickHouse console.
In the top navigation bar, select the region where your cluster is deployed.
On the Clusters page, click the Enterprise Edition Clusters tab.
In the Actions column for the target cluster, click Change Cluster Configuration and select Scale Up or Scale Down.
In the dialog box, set Minimum Reserved Specs per Server and Maximum Specs per Server based on your requirements.
Click OK.
The cluster state changes to Changing. When the state returns to Running, the configuration update is complete.