Creating a Cluster

Function

This API is used to create clusters.

The cluster must run in a VPC. Before creating a cluster, you need to create a VPC and obtain the VPC and subnet IDs.

This API is an asynchronous API. It takes 10 to 15 minutes to create a cluster.

URI

URI format
```
POST /v1.0/{project_id}/clusters
```

Parameter description

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the ID, see Obtaining a Project ID.

Request Message

Request example

POST /v1.0/89cd04f168b84af6be287f71730fdb4b/clusters

{
"cluster": {
        "node_type":  "dws.d1.xlarge.ultrahigh",
        "number_of_node": 3,
        "subnet_id": "374eca02-cfc4-4de7-8ab5-dbebf7d9a720",
        "security_group_id": "dc3ec145-9029-4b39-b5a3-ace5a01f772b",
        "vpc_id": "85b20d7e-9eb7-4b2a-98f3-3c8843ea3574",
        "availability_zone": "eu-west-101",
        "port": 8000,
        "name": "dws-1",
        "user_name": "dbadmin",
        "user_pwd": "Password!",
        "public_ip": {
            "public_bind_type": "auto_assign",
            "eip_id": ""
        }, 
        "enterprise_project_id":"aca4e50a-266f-4786-827c-f8d6cc3fbada"     }
}

Parameter description

**Table 2** Request parameters
Parameter	Mandatory	Type	Description
cluster	Yes	CreateClusterInfo object	Cluster object

**Table 3** CreateClusterInfo
Parameter	Mandatory	Type	Description
node_type	Yes	String	Node type
number_of_node	Yes	Integer	Number of nodes in a cluster. Value range: 3 to 32
subnet_id	Yes	String	Subnet ID, which is used for configuring cluster network.
security_group_id	Yes	String	ID of a security group, which is used for configuring cluster network.
vpc_id	Yes	String	VPC ID, which is used for configuring cluster network.
availability_zone	No	String	AZ of a cluster
port	No	Integer	Service port of a cluster. The value ranges from 8000 to 30000. The default value is 8000.
name	Yes	String	Cluster name, which must be unique. The cluster name must contain 4 to 64 characters, which must start with a letter. Only letters, digits, hyphens (-), and underscores (_) are allowed.
user_name	Yes	String	Administrator username for logging in to a GaussDB(DWS) cluster. The administrator username must: Consist of lowercase letters, digits, or underscores. Start with a lowercase letter or an underscore. Contain 1 to 63 characters. Cannot be a keyword of the GaussDB(DWS) database.
user_pwd	Yes	String	Administrator password for logging in to a GaussDB(DWS) cluster
public_ip	No	PublicIp object	Public IP address. If the parameter is not specified, public connection is not used by default.
number_of_cn	No	Integer	Number of deployed CNs. The value ranges from 2 to the number of cluster nodes minus 1. The maximum value is 5 and the default value is 2.
enterprise_project_id	No	String	Enterprise project. The default enterprise project ID is 0.

**Table 4** PublicIp
Parameter	Mandatory	Type	Description
public_bind_type	Yes	String	Binding type of an EIP. The value can be one of the following: auto_assign not_use bind_existing
eip_id	No	String	EIP ID

Response Message

Example response

{
    "cluster": {
        "id": "7d85f602-a948-4a30-afd4-e84f47471c15"
     }
}

Parameter description

**Table 5** Response parameters
Parameter	Type	Description
cluster	Cluster object	Cluster object

**Table 6** Cluster
Parameter	Type	Description
id	String	Cluster ID

Status Code

Normal
200

Exception

**Table 7** Returned values
Returned Value	Description
400 Bad Request	Request error.
401 Unauthorized	Authorization failed.
403 Forbidden	No operation permission.
404 Not Found	No resources found.
500 Internal Server Error	Internal service error.
503 Service Unavailable	The service is unavailable.