Help Center/ CloudTable Service/ User Guide/ ClickHouse User Guide/ ClickHouse Cluster Management/ Managing ClickHouse Clusters/ ClickHouse Cluster Scale-Out/ ClickHouse Disk Capacity Expansion
Updated on 2024-07-23 GMT+08:00
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ClickHouse Disk Capacity Expansion

The vertical capacity expansion is performed by expanding disk capacity. Data is usually stored on the compute nodes, and disk expansion is required when the disk capacity of the compute nodes is insufficient.

  • During disk capacity expansion, cluster services may jitter.
  • You can perform disk capacity expansion on a cluster when the cluster is in the In service state and no task is being performed (such as scale-out and parameter modification).

Procedure

  1. Log in to the CloudTable console.
  2. Click Cluster Management.
  3. Select the cluster to be expanded and choose Operation > Disk Expansion.

    Figure 1 Disk Expansion page
    You can also click Disk Expansion on the cluster details page to go to the page for expanding disk capacity.
    Figure 2 Accessing the Disk Expansion page

  4. Select the target node type.
  5. Press + to increase nodes.
  6. Confirm the fee and resource quota, and click OK.

Disk Expansion Status

Table 1 Disk expansion status description

Status

Description

Disk expanding

Indicates that a cluster is being scaled out.

In service

This status is shown in Cluster Status, indicating that the scale-out is complete and the cluster can provide services.

Scale-out failed

This status is shown in Task Status, indicating that the cluster fails to be scaled out.