DeleteClusterNodes - Container Service for Kubernetes - Alibaba Cloud Documentation Center

Removes nodes from a Container Service for Kubernetes (ACK) cluster. When you remove nodes, you can specify whether to release the Elastic Compute Service (ECS) instances and drain the nodes. When you remove nodes, pods on the nodes are migrated. This may adversely affect your businesses. We recommend that you back up data and perform this operation during off-peak hours.

Operation description

Note

When you remove a node, the pods that run on the node are migrated to other nodes. This may cause service interruptions. We recommend that you remove nodes during off-peak hours. - The operation may have unexpected risks. Back up the data before you perform this operation. - When the system removes a node, it sets the status of the node to Unschedulable. - The system removes only worker nodes. It does not remove master nodes.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
cs:DeleteClusterNodes	Write	Cluster acs:cs:{#regionId}:{#accountId}:cluster/{#ClusterId}	none	none

Request syntax

POST /clusters/{ClusterId}/nodes
DELETE /clusters/{ClusterId}/nodes

Request parameters

Parameter	Type	Required	Description	Example
ClusterId	string	Yes	The cluster ID.	c850429a2287b4d968e27e87a4921****
body	object	No	The request body.
drain_node	boolean	No	Specifies whether to remove all pods from the nodes that you want to remove. Valid values: `true`: removes all pods from the nodes that you want to remove. `false`: does not remove pods from the nodes that you want to remove. Default value: `false`.	true
release_node	boolean	No	Specifies whether to release the Elastic Compute Service (ECS) instances. Valid values: `true`: releases the ECS instances. `false`: does not release the ECS instances. Default value: `false`. Note You cannot release subscription ECS instances.	true
nodes	array	Yes	The list of nodes to be removed. You need to specify the name of the nodes used in the cluster, for example, `cn-hangzhou.192.168.0.70`.
	string	No	The node name.	cn-chengdu.192.168.0.70

Response parameters

Parameter	Type	Description	Example
	object	The returned data.
cluster_id	string	The cluster ID.	c104d5d5f301c4e2a8ee578c37bc****
request_id	string	The request ID.	A9891419-D125-4D89-AFCA-68846675E2F7
task_id	string	The task ID.	T-60fea8ad2e277f0879000ae9

Examples

Sample success responses

JSONformat

{
  "cluster_id": "c104d5d5f301c4e2a8ee578c37bc****",
  "request_id": "A9891419-D125-4D89-AFCA-68846675E2F7",
  "task_id": "T-60fea8ad2e277f0879000ae9"
}

Error codes

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation

No change history