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DescribeInstances

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最后更新时间： 2025-11-13 20:49:17

1. API Description

Domain name for API request: emr.intl.tencentcloudapi.com.

This API is used to query the information of instances in a cluster.

A maximum of 20 requests can be initiated per second for this API.

We recommend you to use API Explorer

Try it

API Explorer provides a range of capabilities, including online call, signature authentication, SDK code generation, and API quick search. It enables you to view the request, response, and auto-generated examples.

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name	Required	Type	Description
Action	Yes	String	Common Params. The value used for this API: DescribeInstances.
Version	Yes	String	Common Params. The value used for this API: 2019-01-03.
Region	Yes	String	Common Params. For more information, please see the list of regions supported by the product.
DisplayStrategy	Yes	String	Cluster filtering policy. Valid values: clusterList: queries the list of clusters except terminated ones. monitorManage: queries the list of clusters except those that have been terminated, are being created, or failed to be created. cloudHardwareManage/componentManage: reserved fields with the same meaning as `monitorManage`.
InstanceIds.N	No	Array of String	Queries by one or more instance IDs in the format of `emr-xxxxxxxx`. For the format of this parameter, please see the `id.N` section in API Overview. If no instance ID is entered, the list of all instances under this `APPID` will be returned.
Offset	No	Integer	Page number. Default value: 0, indicating the first page.
Limit	No	Integer	Number of returned results per page. Default value: 10. Maximum value: 100
ProjectId	No	Integer	ID of the project to which the instance belongs. This parameter can be obtained from the `projectId` field in the return value of the `DescribeProject` API. If this value is -1, the list of all instances will be returned.
OrderField	No	String	Sorting field. Valid values: clusterId: sorts by cluster ID. addTime: sorts by instance creation time. status: sorts by instance status code.
Asc	No	Integer	Sorts according to `OrderField` in ascending or descending order. Valid values: 0: descending order. 1: ascending order. Default value: 0.

3. Output Parameters

Parameter Name	Type	Description
TotalCnt	Integer	Number of eligible instances.
ClusterList	Array of ClusterInstancesInfo	List of EMR instance details. Note: this field may return null, indicating that no valid values can be obtained.
TagKeys	Array of String	List of tag keys associated to an instance. Note: this field may return null, indicating that no valid values can be obtained.
RequestId	String	The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Querying Instance Details

This example shows you how to query instance details.

Input Example

POST / HTTP/1.1
Host: emr.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: DescribeInstances
<Common request parameters>

{
    "DisplayStrategy": "clusterList",
    "ProjectId": "0",
    "Asc": "0",
    "Limit": "10",
    "OrderField": "clusterid",
    "Offset": "0",
    "InstanceIds": [
        "emr-p9f700x8"
    ]
}

Output Example

{
    "Response": {
        "ClusterList": [
            {
                "AddTime": "2024-11-05 20:39:44",
                "AlarmInfo": "",
                "AliasInfo": "eyJjb21tb24iOiJjb21tb24iLCJjb3JlIjoiY29yZSIsIm1hc3RlciI6Im1hc3RlciIsInRhc2siOiJ0YXNrIn0=",
                "AppId": 1334143,
                "ChargeType": 0,
                "ClusterExternalServiceInfo": null,
                "ClusterId": "emr-hvijzo6n",
                "ClusterName": "odinlli_test_1105",
                "ClusterTitle": "Cluster Is Running",
                "Config": {
                    "ApplicationRole": "",
                    "CbsEncrypt": 0,
                    "ChargeType": 0,
                    "ComNodeSize": 0,
                    "ComResource": {
                        "Cpu": 0,
                        "DiskSize": 0,
                        "DiskType": "",
                        "InstanceType": "",
                        "MemSize": 0,
                        "RootSize": 0,
                        "Spec": "",
                        "SpecName": "",
                        "StorageType": 0
                    },
                    "CoreNodeSize": 2,
                    "CoreResource": {
                        "Cpu": 4,
                        "DiskSize": 200,
                        "DiskType": "CLOUD_SSD",
                        "InstanceType": "",
                        "MemSize": 8192,
                        "RootSize": 70,
                        "Spec": "CVM.S5",
                        "SpecName": "EMR Standard S5",
                        "StorageType": 4
                    },
                    "MasterNodeSize": 1,
                    "MasterResource": {
                        "Cpu": 8,
                        "DiskSize": 200,
                        "DiskType": "CLOUD_SSD",
                        "InstanceType": "",
                        "MemSize": 16384,
                        "RootSize": 70,
                        "Spec": "CVM.S5",
                        "SpecName": "EMR Standard S5",
                        "StorageType": 4
                    },
                    "OnCos": false,
                    "PublicKeyId": "",
                    "RouterNodeSize": 0,
                    "SecurityGroup": "sg-jfluz1nt",
                    "SecurityGroups": [
                        "sg-jfluz1nt"
                    ],
                    "SecurityOn": false,
                    "SoftInfo": [
                        "hdfs-3.2.2",
                        "yarn-3.2.2",
                        "zookeeper-3.6.3",
                        "openldap-2.4.44",
                        "knox-1.6.1"
                    ],
                    "SupportHA": false,
                    "TaskNodeSize": 0,
                    "TaskResource": {
                        "Cpu": 0,
                        "DiskSize": 0,
                        "DiskType": "",
                        "InstanceType": "",
                        "MemSize": 0,
                        "RootSize": 0,
                        "Spec": "",
                        "SpecName": "",
                        "StorageType": 0
                    }
                },
                "ConfigDetail": {
                    "ApplicationRole": "",
                    "CbsEncrypt": 0,
                    "ChargeType": 0,
                    "ComNodeSize": 0,
                    "ComResource": {
                        "Cpu": 0,
                        "DiskSize": 0,
                        "DiskType": "",
                        "InstanceType": "",
                        "MemSize": 0,
                        "RootSize": 0,
                        "Spec": "",
                        "SpecName": "",
                        "StorageType": 0
                    },
                    "CoreNodeSize": 2,
                    "CoreResource": {
                        "Cpu": 4,
                        "DiskSize": 200,
                        "DiskType": "CLOUD_SSD",
                        "InstanceType": "",
                        "MemSize": 8192,
                        "RootSize": 70,
                        "Spec": "CVM.S5",
                        "SpecName": "EMR Standard S5",
                        "StorageType": 4
                    },
                    "MasterNodeSize": 1,
                    "MasterResource": {
                        "Cpu": 8,
                        "DiskSize": 200,
                        "DiskType": "CLOUD_SSD",
                        "InstanceType": "",
                        "MemSize": 16384,
                        "RootSize": 70,
                        "Spec": "CVM.S5",
                        "SpecName": "EMR Standard S5",
                        "StorageType": 4
                    },
                    "OnCos": false,
                    "PublicKeyId": "",
                    "RouterNodeSize": 0,
                    "SecurityGroup": "sg-jfluz1nt",
                    "SecurityGroups": [
                        "sg-jfluz1nt"
                    ],
                    "SecurityOn": false,
                    "SoftInfo": [
                        "hdfs-3.2.2",
                        "yarn-3.2.2",
                        "zookeeper-3.6.3",
                        "openldap-2.4.44",
                        "knox-1.6.1"
                    ],
                    "SupportHA": false,
                    "TaskNodeSize": 0,
                    "TaskResource": {
                        "Cpu": 0,
                        "DiskSize": 0,
                        "DiskType": "",
                        "InstanceType": "",
                        "MemSize": 0,
                        "RootSize": 0,
                        "Spec": "",
                        "SpecName": "",
                        "StorageType": 0
                    }
                },
                "DisplayName": "Default Scenario",
                "EmrVersion": "EMR-V3.5.0",
                "Ftitle": "Cluster Is Running",
                "HiveMetaDb": "",
                "Id": 1113,
                "IsCvmReplace": false,
                "IsMultiZoneCluster": false,
                "IsTradeCluster": 0,
                "IsWoodpeckerCluster": 1,
                "MasterIp": "0.0.0.0",
                "MetaDb": "",
                "ProductId": 44,
                "ProjectId": 0,
                "RegionId": 1,
                "ResourceOrderId": 0,
                "RunTime": "0 day 0 hour 32 minutes and 20 seconds",
                "SceneEmrVersion": "EMR-V3.5.0",
                "SceneName": "Hadoop-Default",
                "SceneServiceClass": "Hadoop",
                "ServiceClass": "HADOOP",
                "Status": 2,
                "SubnetId": 6131299,
                "SubnetName": "vigo-subnet",
                "Tags": [],
                "TopologyInfoList": [
                    {
                        "NodeInfoList": [
                            {
                                "NodeSize": 2,
                                "NodeType": "Core"
                            },
                            {
                                "NodeSize": 0,
                                "NodeType": "Task"
                            },
                            {
                                "NodeSize": 0,
                                "NodeType": "Router"
                            },
                            {
                                "NodeSize": 0,
                                "NodeType": "Common"
                            },
                            {
                                "NodeSize": 1,
                                "NodeType": "Master"
                            }
                        ],
                        "SubnetInfoList": [
                            {
                                "SubnetId": "subnet-ax8z9f1u",
                                "SubnetName": "vigo-subnet"
                            }
                        ],
                        "Zone": "ap-guangzhou-3",
                        "ZoneId": 100003
                    }
                ],
                "TradeVersion": 1,
                "Uin": "0000000",
                "UniqSubnetId": "subnet-ax8z9f1u",
                "UniqVpcId": "vpc-r2g15ki3",
                "VpcId": 10421586,
                "VpcName": "vigo-vpc",
                "Zone": "ap-guangzhou-3",
                "ZoneId": 100003
            }
        ],
        "RequestId": "7fd5fb20-1b1f-4425-ad13-1763f0f7f8dc",
        "TagKeys": [],
        "TotalCnt": 1
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

Tencent Cloud CLI 3.0

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code	Description
FailedOperation	Operation failed.
FailedOperation.DescribeResourceTagsFailed	Failed to fetch resource tag.
FailedOperation.GetCamRoleFailed	Failed to query the CAM role.
FailedOperation.GetCamServerFailed	Failed to call the CAM service.
InternalError	Internal error.
InternalError.AccountCgwError	An error occurred while calling another service API.
InternalError.CamCgwError	An error occurred while calling another service API.
InternalError.CamError	An error occurred while calling another service API.
InternalError.CbsCgwError	An error occurred while calling another service API.
InternalError.CbsError	An error occurred while calling another service API.
InternalError.CdbCgwError	An error occurred while calling another service API.
InternalError.CdbError	An error occurred while calling another service API.
InternalError.ConfigCgwError	An error occurred while calling another service API.
InternalError.CvmError	An error occurred while calling another service API.
InternalError.KmsError	An error occurred while calling another service API.
InternalError.ProjectCgwError	An error occurred while calling another service API.
InternalError.SgError	An error occurred when calling a security group API.
InternalError.TagError	An error occurred while calling another service API.
InternalError.TradeCgwError	An error occurred while calling another service API.
InternalError.VpcCgwError	An error occurred while calling another service API.
InternalError.VpcError	An error occurred while calling another service API.
InternalError.WoodServerError	An error occurred while calling another service API.
InvalidParameter	Invalid parameter.
InvalidParameter.DisplayStrategyNotMatch	Incorrect display policy.
InvalidParameter.InvalidClusterId	Invalid parameter: ClusterId.
InvalidParameter.InvalidInstanceName	Invalid cluster name.
InvalidParameter.OrderFieldNotMatch	Invalid sorting field.
ResourceNotFound.ClusterNotFound	The instance was not found.
ResourceNotFound.HardwareInfoNotFound	No hardware information found.
ResourceNotFound.InstanceNotFound	The instance was not found.
UnauthorizedOperation.CheckCamAuth	Unauthorized operation.

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