DeleteNodes - Elastic High Performance Computing - Alibaba Cloud Documentation Center

Deletes one or more compute nodes from a cluster.

Operation description

Before you delete a compute node, we recommend that you export all job data from the node to prevent data loss.

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
ehpc:DeleteNodes	WRITE	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
ClusterId	string	Yes	The ID of the cluster. You can call the ListClusters operation to query the cluster ID.	ehpc-hz-FYUr32****
ReleaseInstance	boolean	No	Specifies whether to release the instances that are created by using E-HPC. Default value: true	true
Sync	boolean	No	Specifies whether to directly delete the node. Valid values: true false	false
Instance	object []	Yes
Id	string	No	The ID of the compute node that you want to delete. Valid values of N: 1 to 100. You can call the DescribeCluster operation to query the IDs of the nodes in the cluster.	i-bp13p7vlcb1uihfv****

Response parameters

Parameter	Type	Description	Example
	object
TaskId	string	The ID of the task. If you set the Sync parameter to true, the DeleteNodes operation is synchronous. Valid value: Not Available. If you set the Sync parameter to false, the DeleteNodes operation is asynchronous. You can call the ListTasks operation to query the result of the task.	04F0F334-1335-436C-A1D7-6C044FE7****
RequestId	string	The ID of the request.	04F0F334-1335-436C-A1D7-6C044FE7****

Examples

Sample success responses

JSONformat

{
  "TaskId": "04F0F334-1335-436C-A1D7-6C044FE7****",
  "RequestId": "04F0F334-1335-436C-A1D7-6C044FE7****"
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidParams	The specified parameter %s is invalid.	The specified parameter %s is invalid.
400	NotEnabled	You have not enabled this service	You have not enabled this service
403	InvalidClusterStatus	The operation failed due to invalid cluster status.	The cluster status does not support the operation.
403	InvalidNodeStatus	The operation failed due to invalid node status.	The node status does not allow the operation.
403	ConflictOpt	A conflicting operation is running.	A conflicting operation is running. Please try again later.
404	ClusterNotFound	The specified cluster does not exist.	The specified instance does not exist.
404	ComputeNotFound	The specified compute node does not exist.	The specified compute node does not exist.
404	ManagerNotFound	The manager nodes do not exist or their status is abnormal.	The manager nodes do not exist or their status is abnormal.
404	ObjectNotFound	The specified object is not found.	The specified object does not exist. Please verify the parameter.
406	EcsError	An error occurred while calling the ECS API operation.	An error occurred while calling the ECS API operation.
406	EipError	The EIP API request failed.	EIP API request failed.
406	DbError	A database service error occurred.	Database request failed.
406	AliyunError	An Alibaba Cloud product error occurred.	An Alibaba Cloud product error occurred.
407	NotAuthorized	You are not authorized by RAM for this request.	The request is not authorized by RAM.
409	PartFailure	Part of the batch operation failed.	Part of the batch operation failed.
500	UnknownError	An unknown error occurred.	An unknown error occurred.
503	ServiceUnavailable	The request has failed due to a temporary failure of the server	The request has failed due to a temporary failure of the server.

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