Introduction to ClickHouse Cluster Management

Log in to the CloudTable console. In the left navigation pane, click Cluster Management. On the Cluster Management page, a cluster list is displayed. If there are a large number of clusters, you can turn pages to view clusters in any state.

Figure 1 Cluster list
Click to enlarge

**Table 1** Cluster management list parameters
Parameter	Description
Cluster Name	Cluster name specified when a cluster is created.
Cluster Status	Cluster statuses include Creating, In service, Sub-health, Creation failed, and Frozen.
Task Status	Task status of a cluster.
Database Engine	The values include HBase and ClickHouse.
Version	Cluster version.
Enterprise Project	You can group related cloud resources (for example, resources used for the same purpose) and manage them by enterprise project. NOTE: You can delete a user that was authorized to manage an enterprise project if the enterprise's business has changed and the user should not have the permissions to manage the enterprise project. You can delete a user or multiple users. After a user that was authorized to manage an enterprise project is deleted, the user cannot manage the enterprise project. If the user needs to manage the enterprise project, authorize the user to manage the enterprise project again.
Created	Time when a cluster is created.
Billing Mode	Billing mode of a cluster, which can be pay-per-use or yearly/monthly.
Operation	Click Monitor to access the CloudTable service monitoring page. Click Delete to delete a cluster. Click Restart to restart the cluster. Choose More > Change to Yearly/Monthly to change the billing mode to yearly/monthly. Click Scale Out to add compute nodes. Click More > Unsubscribe in the Operation column to unsubscribe from the yearly/monthly cluster.

**Table 2** Icon description
Icon	Description
	Click to view all projects.
	Click to refresh the cluster list.
	Enter a cluster name in the search box and click to search for it.

Cluster Status

**Table 3** Cluster status description
Status	Description
Creating	Indicates that a cluster is being created.
In service	If a cluster is successfully created and can provide services, the cluster status is In service.
Sub-health	If the cluster status cannot be monitored within the specified time, the cluster status changes to Sub-health. Manual intervention is required to recover a cluster that is in Sub-health status. For example, you can restart the cluster to recover the cluster.
Creation failed	Indicates that a cluster fails to be created.
Frozen	If the balance is insufficient for renewing a cluster, the cluster status is Frozen. To unfreeze the cluster, you need to recharge your account to ensure that the account balance is not 0.. NOTE: A frozen cluster is unavailable and its all ECSs are shut down. After being unfrozen, the cluster recovers to the In service state. If you do not renew the cluster before the freeze period ends, the cluster will be deleted.

Task Status

**Table 4** Task status description
Status	Description
Deleting	Indicates that a cluster is being deleted.
Restarting	Indicates that a cluster is being restarted.
Scaling out	Indicates that a cluster is being scaled out.