Scale a node pool - - Alibaba Cloud Documentation Center

You can call the ModifyClusterNodePool operation to scale a node pool.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request syntax

PUT /clusters/ClusterId/nodepools/NodepoolId HTTP/1.1
Content-Type:application/json
{
    "scaling_group": {
        "desired_size": Long
    }
}

Request parameters

Table 1. Request path parameters
Parameter	Type	Required	Example	Description
ClusterId	String	Yes	c23421cfa74454bc8b37163fd19af****	The ID of the cluster that you want to manage.
NodepoolId	String	Yes	np31da1b38983f4511b490fc62108a****	The ID of the node pool that you want to scale.

Table 2. Request body parameters
Parameter	Type	Required	Example	Description
desired_size	Long	No	1	The expected number of nodes in the node pool. You can scale the node pool by modifying the expected number of nodes in the node pool. You can add at most 500 nodes in one API call. The maximum number of nodes that can be added is limited by the quota of nodes in the cluster.

Response syntax

HTTP/1.1 200 
Content-Type:application/json 
{
  "task_id" : "String" 
}

Response parameters

Table 3. Response body parameters
Parameter	Type	Example	Description
task_id	String	T-5faa48fb31b6b8078d00****	The ID of the task.

Examples

Sample requests

PUT /clusters/c23421cfa74454bc8b37163fd19af****/nodepools/np31da1b38983f4511b490fc62108a**** HTTP/1.1  
Content-Type:application/json 
{
  "scaling_group":{"desired_size":1}
}

Sample success responses

XML format

HTTP/1.1 200 OK 
Content-Type:application/xml 

<task_id>T-5faa48fb31b6b8078d00****</task_id>

JSON format

HTTP/1.1 200 OK 
Content-Type:application/json 

{  
  "task_id" : "T-5faa48fb31b6b8078d00****" 
}

Error codes

For a list of error codes, visit the API Error Center.