Feature Introduction
If the original system disk capacity of the nodes in the cluster becomes insufficient as your business needs grow, a scale-out operation is required. This topic describes how to scale out cloud system disks in the EMR console.
Note:
You can scale out only cloud system disks. Local disks do not support scale-out.
Local disk models, pods, shared resource nodes, and underwriting billing nodes do not support scaling out cloud system disks.
Disks can only be scaled out and not scaled in to prevent data loss.
When batch scaling out the multi-node cloud system disk, you can perform operations in batches for nodes with the same billing mode, availability zone, or node type.
Operation Steps
1. Log in to the EMR console and click the corresponding Cluster ID/Name in the cluster list to go to the cluster details page. 2. Enter the resource management page and select the single-node operation or batch operation solution as needed:
2.1 Single-Node Cloud System Disk Scale-Out: Select the node to be scaled out and select More > Disk Adjustment > Scale Out Cloud System Disk in the Operation column of the list and enter the cloud system disk scale-out configuration page.
2.2 Multi-Node Cloud System Disk Batch Scale-Out: Select Disk Adjustment > Scale Out Cloud System Disk under the More Operations header and enter the cloud system disk scale-out configuration page.
3. Set the Unified Target Capacity, which should be greater than the current capacity. After the adjustment, the selected system disk will be resized to the specified capacity.
4. After confirming the information is correct, click OK to start scaling out the cloud system disks.
5. After the disk scale-out, the partition and file system will be scaled out automatically, and you do not need to perform a manual update.