You can run the arc-cs cluster scaleout <clusterId> command to add nodes to a cluster.

For more information about the parameters of the command, see Add worker nodes to a cluster.

Command-line interface examples

Sample request:

arc-cs cluster scaleout ca2ba6f61dd324235927bb21b2a4d**** 
--count 2 
--worker-instance-types '["ecs.se1ne.xlarge"]' 
--worker-system-disk-category cloud_ssd 
--worker-system-disk-size 120 
--login-password Hello1234
Sample response:
{
  "clusterId": "c644b367c5a834b18baf9c696bfb3****",
  "requestId": "5E6E63A5-68B8-433E-AA3E-6A4BAA5D****",
  "taskId": "T-5feae4e97720867d4d00****"
}