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Serverless App Engine:DescribeApplicationSlbs

Last Updated:Jan 14, 2026

Queries the configurations of Server Load Balancer (SLB) instances for an application.

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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

sae:DescribeApplicationSlbs

get

*All Resource

*

None None

Request syntax

GET /pop/v1/sam/app/slb HTTP/1.1

Request parameters

Parameter

Type

Required

Description

Example

AppId

string

Yes

The ID of the application.

017f39b8-dfa4-4e16-a84b-1dcee4b1****

Response elements

Element

Type

Description

Example

object

The data returned.

RequestId

string

The ID of the request.

91F93257-7A4A-4BD3-9A7E-2F6EAE6D****

Message

string

The returned message. Valid values:

  • success: The request was successful.

  • An error code: The request failed.

success

TraceId

string

The trace ID of the request. You can use the ID to query the details of a request.

0a98a02315955564772843261e****

Data

object

The data returned.

Intranet

array<object>

The configurations of the internal-facing SLB instance.

object

The details of the internal-facing SLB instance configuration.

HttpsCertId

string

The ID of the Alibaba Cloud certificate that is used for the HTTPS protocol.

1513561019707729_16f37aae5f3_-375882821_-169099****

Protocol

string

The supported protocol.

TCP

TargetPort

integer

The container port.

8080

Port

integer

The listening port of the SLB instance.

80

HttpsCaCertId

string

The ID of the Alibaba Cloud CA certificate that is used for the HTTPS protocol.

1513561019707729_16f37aae5f3_-375882821_-169099****

StickySession

boolean

Indicates whether session persistence is enabled.

false

StickySessionType

string

The method that is used to handle cookies. Valid values:

  • insert: Inserts a cookie. The load balancer inserts a cookie into the first response from a client. The next request from the client contains this cookie, and the load balancer forwards the request to the same backend server.

  • server: Rewrites a cookie. When the load balancer detects a custom cookie, it rewrites the cookie. The next request from the client contains the new cookie, and the load balancer forwards the request to the same backend server.

Note

This parameter is required and takes effect only when StickySession is set to true.

insert

CookieTimeout

integer

The timeout period of a cookie. Unit: seconds. Valid values: 1 to 86400.

Note

This parameter is required and takes effect only when StickySession is set to true and StickySessionType is set to insert.

56

Cookie

string

The cookie that is configured on the server.

The cookie must be 1 to 200 characters in length and can contain only ASCII letters and digits. It cannot contain commas (,), semicolons (;), or spaces. It cannot start with a dollar sign ($).

Note

This parameter is required and takes effect only when StickySession is set to true and StickySessionType is set to server.

wwe

CreateTime

integer

The timestamp when the rule was created.

1741247308294

InternetIp

string

The public IP address of the SLB instance.

59.74.**.**

InternetSlbId

string

The ID of the Internet-facing SLB instance.

lb-uf6xc7wybefehnv45****

Internet

array<object>

The configurations of the Internet-facing SLB instance.

object

The details of the Internet-facing SLB instance configuration.

HttpsCertId

string

The ID of the Alibaba Cloud certificate that is used for the HTTPS protocol.

1513561019707729_16f37aae5f3_-375882821_-169099****

Protocol

string

The supported protocol.

TCP

TargetPort

integer

The container port.

8080

Port

integer

The listening port of the SLB instance.

80

HttpsCaCertId

string

The ID of the Alibaba Cloud CA certificate that is used for the HTTPS protocol.

1513561019707729_16f37aae5f3_-375882821_-169099****

StickySession

boolean

Indicates whether session persistence is enabled.

false

StickySessionType

string

The method that is used to handle cookies. Valid values:

  • insert: Inserts a cookie. The load balancer inserts a cookie into the first response from a client. The next request from the client contains this cookie, and the load balancer forwards the request to the same backend server.

  • server: Rewrites a cookie. When the load balancer detects a custom cookie, it rewrites the cookie. The next request from the client contains the new cookie, and the load balancer forwards the request to the same backend server.

Note

This parameter is required and takes effect only when StickySession is set to true.

insert

CookieTimeout

integer

The timeout period of a cookie. Unit: seconds. Valid values: 1 to 86400.

Note

This parameter is required and takes effect only when StickySession is set to true and StickySessionType is set to insert.

56

Cookie

string

The cookie that is configured on the server.

The cookie must be 1 to 200 characters in length and can contain only ASCII letters and digits. It cannot contain commas (,), semicolons (;), or spaces. It cannot start with a dollar sign ($).

Note

This parameter is required and takes effect only when StickySession is set to true and StickySessionType is set to server.

wwe

CreateTime

integer

The timestamp when the rule was created.

1741247308294

IntranetSlbId

string

The ID of the internal-facing SLB instance.

lb-uf6xc7wybefehnv45****

IntranetIp

string

The private IP address of the SLB instance.

192.168.XX.XX

InternetSlbExpired

boolean

Indicates whether the Internet-facing SLB instance has expired.

false

IntranetSlbExpired

boolean

Indicates whether the private SLB instance has expired.

false

InternetSlbChargeType

string

The billing method of the Internet-facing SLB instance.

PayBySpec

IntranetSlbChargeType

string

The billing method of the internal-facing SLB instance.

PayBySpec

AppId

string

AppName

string

ClusterId

string

ErrorCode

string

The error code.

  • If the request is successful, this parameter is not returned.

  • If the request fails, this parameter is returned. For more information, see the Error codes section in this topic.

Code

string

The HTTP status code or a POP error code. Valid values:

  • 2xx: The request was successful.

  • 3xx: The request was redirected.

  • 4xx: The request was invalid.

  • 5xx: A server error occurred.

200

Success

boolean

Indicates whether the SLB configurations of the application were queried. Valid values:

  • true: The configurations were queried.

  • false: The query failed.

true

Examples

Success response

JSON format

{
  "RequestId": "91F93257-7A4A-4BD3-9A7E-2F6EAE6D****",
  "Message": "success",
  "TraceId": "0a98a02315955564772843261e****",
  "Data": {
    "Intranet": [
      {
        "HttpsCertId": "1513561019707729_16f37aae5f3_-375882821_-169099****",
        "Protocol": "TCP",
        "TargetPort": 8080,
        "Port": 80,
        "HttpsCaCertId": "1513561019707729_16f37aae5f3_-375882821_-169099****",
        "StickySession": false,
        "StickySessionType": "insert",
        "CookieTimeout": 56,
        "Cookie": "wwe",
        "CreateTime": 1741247308294
      }
    ],
    "InternetIp": "59.74.**.**",
    "InternetSlbId": "lb-uf6xc7wybefehnv45****",
    "Internet": [
      {
        "HttpsCertId": "1513561019707729_16f37aae5f3_-375882821_-169099****",
        "Protocol": "TCP",
        "TargetPort": 8080,
        "Port": 80,
        "HttpsCaCertId": "1513561019707729_16f37aae5f3_-375882821_-169099****",
        "StickySession": false,
        "StickySessionType": "insert",
        "CookieTimeout": 56,
        "Cookie": "wwe",
        "CreateTime": 1741247308294
      }
    ],
    "IntranetSlbId": "lb-uf6xc7wybefehnv45****",
    "IntranetIp": "192.168.XX.XX",
    "InternetSlbExpired": false,
    "IntranetSlbExpired": false,
    "InternetSlbChargeType": "PayBySpec",
    "IntranetSlbChargeType": "PayBySpec",
    "AppId": "",
    "AppName": "",
    "ClusterId": ""
  },
  "ErrorCode": "空",
  "Code": "200",
  "Success": true
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidApplication.NotFound The current application does not exist.
400 InvalidParameter.NotEmpty You must specify the parameter %s.
400 InvalidParameter.Obviously The specified parameter is invalid {%s}.
400 InvalidParameter.WithMessage The parameter is invalid {%s}: %s

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.