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Microservices Engine:ListEurekaInstances

Last Updated:Sep 09, 2026

Queries Eureka instances.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

mse:ListEurekaInstances

get

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

RequestPars

string

No

The extended request parameters in the JSON format.

{}

PageNum

integer

Yes

The number of the page to return.

1

PageSize

integer

Yes

The number of entries to return on each page.

10

ClusterId

string

No

The ID of the instance.

mse-09k1q11****

ServiceName

string

Yes

The name of the service.

name

AcceptLanguage

string

No

The language of the response. Valid values:

  • zh: Chinese

  • en: English

zh

Response elements

Element

Type

Description

Example

object

The data structure.

HttpCode

string

The HTTP status code returned.

202

TotalCount

integer

The total number of returned instances.

7

RequestId

string

The ID of the request.

316F5F64-F73D-42DC-8632-01E308B6****

Message

string

The message returned.

The request is successfully processed.

PageSize

integer

The number of entries returned per page.

10

PageNumber

integer

The page number of the returned page.

1

Data

array<object>

The details of the data.

array<object>

The data structure.

Status

string

The number of service providers. The value is in the following format: Number of healthy instances/Total number of instances.

1/1

LastDirtyTimestamp

integer

The time when the instance was last modified.

20201009115543

IpAddr

string

The IP address.

30.5.XX.XX

HomePageUrl

string

The URL of the homepage.

http://30.5.XX.XX:8091/

HostName

string

The hostname.

30.5.XX.XX

InstanceId

string

The ID of the instance.

L-PC1A6A28-****.hz.ali.com:contactinfo:8091

Port

integer

The service port number.

8091

SecurePort

integer

The security port.

443

App

string

The name of the application.

CONTACTINFO

DurationInSecs

integer

The timeout period of the instance.
After the specified timeout period expires, the service is unavailable by default and is deleted.

90

LastUpdatedTimestamp

integer

The time when the instance heartbeat was last checked.

20201010071203

RenewalIntervalInSecs

integer

The maximum interval between two heartbeat checks after a heartbeat check times out.
Default value: 10.

10

VipAddress

string

The virtual IP address (VIP).

contactinfo

Metadata

object

The metadata.

[string]

ErrorCode

string

The error code returned if the request failed.

mse-100-000

Success

boolean

Indicates whether the request was successful. Valid values:

  • true: The request was successful.

  • false: The request failed.

true

Examples

Success response

JSON format

{
  "HttpCode": "202",
  "TotalCount": 7,
  "RequestId": "316F5F64-F73D-42DC-8632-01E308B6****",
  "Message": "The request is successfully processed.\n",
  "PageSize": 10,
  "PageNumber": 1,
  "Data": [
    {
      "Status": "1/1",
      "LastDirtyTimestamp": 20201009115543,
      "IpAddr": "30.5.XX.XX",
      "HomePageUrl": "http://30.5.XX.XX:8091/",
      "HostName": "30.5.XX.XX",
      "InstanceId": "L-PC1A6A28-****.hz.ali.com:contactinfo:8091",
      "Port": 8091,
      "SecurePort": 443,
      "App": "CONTACTINFO",
      "DurationInSecs": 90,
      "LastUpdatedTimestamp": 20201010071203,
      "RenewalIntervalInSecs": 10,
      "VipAddress": "contactinfo",
      "Metadata": {
        "test": "test",
        "test2": 1
      }
    }
  ],
  "ErrorCode": "mse-100-000",
  "Success": true
}

Error codes

HTTP status code

Error code

Error message

Description

400 IllegalRequest Invalid request:%s Invalid request: %s
400 InvalidParameter Parameter error:%s Request parameter error: %s
500 InternalError Console error. Try again later:%s Console error. Try again later: %s
403 NoPermission You are not authorized to perform this operation:%s You do not have the permission to use this interface:%s
404 NotFound Not found:%s The resource does not exist:%s

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.