doc-exports/docs/cce/api-ref/cce_02_0248.html

Obtaining Cluster Certificates

Function

This API is used to obtain certificates of a specified cluster in form of kubeconfig file.

URI

POST /api/v3/projects/{project_id}/clusters/{cluster_id}/clustercert

Table 1 describes the parameters of this API.

Table 1 Description

Parameter	Mandatory	Description
project_id	Yes	Project ID. For details about how to obtain the project ID, see How to Obtain Parameters in the API URI.
cluster_id	Yes	Cluster ID. For details about how to obtain the cluster ID, see How to Obtain Parameters in the API URI.

Request

Request parameters:

Table 2 andTable 3 describes the request parameters.

Table 2 Parameters in the request header

Parameter	Mandatory	Description
Content-Type	Yes	Message body type (format). Possible values: application/json;charset=utf-8 application/json
X-Auth-Token	Yes	Requests for calling an API can be authenticated using either a token or AK/SK. If token-based authentication is used, this parameter is mandatory and must be set to a user token. For details on how to obtain a user token, see API Usage Guidelines.

Table 3 Parameters in the request body

Parameter	Mandatory	Type	Description
duration	Yes	Integer	Period during which a cluster certificate is valid, in days. Validity period of the cluster certificate, in days. A cluster certificate can be valid for 1 to 1,825 days. If this parameter is set to -1, the validity period is 1,825 days (about 5 years). Minimum: 1 Maximum: 1825

Example request:

Applying for a cluster access certificate valid for 30 days

{ 
  "duration": 30
}

Response

Response parameters:

Table 4 describes the response parameters.

Table 4 Response parameters

Parameter	Type	Description
kind	String	API type. The value is fixed at Config and cannot be changed.
apiVersion	String	API version. The value is fixed at v1 and cannot be changed.
preferences	Object	This field is not used currently and is left unspecified by default.
clusters	Array of clusters objects	Cluster list.
users	Array of users objects	Certificate information and client key information of a specified user.
contexts	Array of contexts objects	Context list.
current-context	String	Current context. If publicIp (VM EIP) exists, the value is external. If publicIp does not exist, the value is internal.

Table 5 Data structure of the clusters field

Parameter	Type	Description
name	String	Cluster name. If the publicIp parameter does not exist (that is, no EIP exists), there is only one cluster in the cluster list, and the value of this parameter is internalCluster. If the publicIp parameter exists (that is, the EIP exists), there is more than one cluster in the cluster list, and the value of this parameter is externalCluster.
cluster	cluster object	Cluster information.

Table 6 Data structure of the cluster field

Parameter	Type	Description
server	String	Node IP address.
certificate-authority-data	String	Certificate authorization data.
insecure-skip-tls-verify	Boolean	Whether to skip the server certificate verification. If the cluster type is externalCluster, the value is true.

Table 7 Data structure of the users field

Parameter	Type	Description
name	String	The value is fixed to user.
user	user object	Stores the certificate information and ClientKey information of a specified user.

Table 8 Data structure of the user field

Parameter	Type	Description
client-certificate-data	String	Client certificate.
client-key-data	String	Contains PEM encoding data from the TLS client key file.

Table 9 Data structure of the contexts field

Parameter	Type	Description
name	String	Context name. If the publicIp parameter does not exist (that is, no EIP exists), there is only one cluster in the cluster list, and the value of this parameter is internal. If the publicIp parameter exists (that is, the EIP exists), there is more than one cluster in the cluster list, and the value of this parameter is external.
context	context object	Context information.

Table 10 Data structure of the context field

Parameter	Type	Description
cluster	String	Cluster context.
user	String	User context.

Response example:

{
    "kind": "Config",
    "apiVersion": "v1",
    "preferences": {},
    "clusters": [
        {
            "name": "internalCluster",
            "cluster": {
                "server": "https://192.168.1.7:5443",
                "certificate-authority-data": ""
            }
        }
    ],
    "users": [
        {
            "name": "user",
            "user": {
                "client-certificate-data": "",
                "client-key-data": ""
            }
        }
    ],
    "contexts": [
        {
            "name": "internal",
            "context": {
                "cluster": "internalCluster",
                "user": "user"
            }
        }
    ],
    "current-context": "internal"
}

Status Code

Table 11 describes the status code of this API.

Table 11 Status code

Status Code	Description
200	Certificates of the specified cluster are successfully obtained.

For details about error status codes, see Status Code.

Parent topic: Cluster Management