Zheng, Xiu bf0cbd66f9 CSS API 22.4.1 Version

Reviewed-by: Kacur, Michal <michal.kacur@t-systems.com>
Co-authored-by: Zheng, Xiu <zhengxiu@huawei.com>
Co-committed-by: Zheng, Xiu <zhengxiu@huawei.com>

2023-04-12 00:11:02 +00:00

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Scaling In Nodes of a Specific Type

Function

This API is used to remove instances of different types and reduce instance storage capacity in a cluster.

URI

POST /v1.0/extend/{project_id}/clusters/{cluster_id}/role/shrink

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details, see Obtaining a Project ID and Name.
cluster_id	Yes	String	ID of the cluster you want to scale in.

Request Parameters

**Table 2** Request body parameters
Parameter	Mandatory	Type	Description
shrink	Yes	Array of ShrinkNodeReq objects	Type and quantity of nodes you want to remove from a cluster.

**Table 3** ShrinkNodeReq
Parameter	Mandatory	Type	Description
reducedNodeNum	Yes	Integer	Number of nodes you want to remove from a cluster. After the scale-in, there has to be at least one node in each AZ under each node type. In a cross-AZ cluster, the difference between the numbers of the same type nodes in different AZs cannot exceed 1. For a cluster without master nodes, the number of removed data nodes (including cold data nodes and other types of nodes) in a scale-in must be fewer than half of the original data node number, and the number of remaining data nodes after a scale-in must be greater than the maximum number of index replicas.For a cluster with master nodes, the number of removed master nodes in a scale-in must be fewer than half of the original master node number. After scale-in, there has to be an odd number of master nodes, and there has to be at least three of them.
type	Yes	String	Node type. ess: data node ess-cold: cold data node ess-client: client node ess-master: master node

Response Parameters

None

Example Requests

{
  "shrink" : [ {
    "type" : "ess",
    "reducedNodeNum" : 1
  } ]
}

Example Responses