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ENS:DescribeLoadBalancers

Last Updated:Jul 24, 2026

Queries the list of created load balancing instances.

Operation description

  • API call rate: 100 calls per second.

  • Per-user call rate: 10 calls per second.

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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

ens:DescribeLoadBalancers

list

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

EnsRegionId

string

No

The ENS node ID.

cn-guangzhou-10

ServerId

string

No

The instance ID of the backend server.

i-5f67ffjc004wwz0t****

LoadBalancerStatus

string

No

The listener status of the load balancing instance. Valid values:

  • Active: The listeners of the instance can forward received traffic based on rules.

  • InActive: The listeners of the instance no longer forward received traffic.

InActive

LoadBalancerId

string

No

The ID of the load balancing instance.

lb-5q73cv04zeyh43lh74lp4****

LoadBalancerName

string

No

The name of the load balancing instance.

example

NetworkId

string

No

The network ID.

n-5s9ayrxsd9hszrlt5fgv2****

VSwitchId

string

No

The vSwitch ID.

vsw-5sy773iy25rulsmgskmba****

Address

string

No

The service address of the load balancing instance.

10.0.XX.XX

EnsRegionIds

array

No

The list of ENS node IDs.

string

No

The ENS node ID.

cn-chengdu-telecom-4

PageNumber

integer

No

The page number of the list. Default value: 1.

1

PageSize

integer

No

The number of entries per page for a paged query. Default value: 10. Valid values: 10 to 100.

100

LoadBalancerType

string

No

The type of the load balancing instance.

Response elements

Element

Type

Description

Example

object

Schema of Response

RequestId

string

The request ID.

473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

PageNumber

integer

The page number of the list.

1

PageSize

integer

The number of entries per page for a paged query. Default value: 10. Valid values: 10 to 100.

100

TotalCount

integer

The total number of entries in the list.

1

LoadBalancers

object

LoadBalancer

array<object>

The list of load balancing instances returned in array format.

object

The list of load balancing instances returned in array format.

LoadBalancerId

string

The ID of the ELB instance.

lb-5snthcyu1x10g7tywj7iu****

LoadBalancerName

string

The name of the ELB instance.

example

LoadBalancerStatus

string

The status of the ELB instance. Valid values:

  • Active: The listeners of the instance can forward received traffic based on the rules.

  • Inactive: The listeners of the instance no longer forward received traffic.

InActive

Address

string

The service address of the ELB instance.

10.10.XX.XX

EnsRegionId

string

The ID of the ENS node.

cn-wuhan-telecom

NetworkId

string

The ID of the network.

n-5rz0rj1caexauilpsjx0w****

VSwitchId

string

The ID of the vSwitch.

vsw-5rllcjb3ol6duzjdnbm1om****

CreateTime

string

The time when the ELB instance was created. The time is displayed in UTC.

2021-05-06T11:13:41Z

AddressIPVersion

string

The IP version. Valid values: ipv4 and ipv6.

ipv4

PayType

string

The billing method of the instance. Valid values:

  • PrePaid: subscription

  • PostPaid: pay-as-you-go. This is currently the only supported billing method.

PostPaid

LoadBalancerType

string

The type of the ELB instance.

AddressType

string

The address type.

Examples

Success response

JSON format

{
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "PageNumber": 1,
  "PageSize": 100,
  "TotalCount": 1,
  "LoadBalancers": {
    "LoadBalancer": [
      {
        "LoadBalancerId": "lb-5snthcyu1x10g7tywj7iu****",
        "LoadBalancerName": "example",
        "LoadBalancerStatus": "InActive",
        "Address": "10.10.XX.XX",
        "EnsRegionId": "cn-wuhan-telecom",
        "NetworkId": "n-5rz0rj1caexauilpsjx0w****",
        "VSwitchId": "vsw-5rllcjb3ol6duzjdnbm1om****",
        "CreateTime": "2021-05-06T11:13:41Z",
        "AddressIPVersion": "ipv4",
        "PayType": "PostPaid",
        "LoadBalancerType": "",
        "AddressType": ""
      }
    ]
  }
}

Error codes

HTTP status code

Error code

Error message

Description

400 ens.interface.error Failed to call API.
400 NoPermission Permission denied.
400 Invalid%s The specified parameter %s is invalid.
400 Missing%s You must specify the parameter %s.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.