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    ENS:CreateLoadBalancerUDPListener

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    ENS:CreateLoadBalancerUDPListener

    Last Updated:Dec 25, 2024

    Creates a User Datagram Protocol (UDP) listener.

    Operation description

    • You can call this operation up to 100 times per second per account.
    • You can call this operation up to 10 times per second per user.

    Debugging

    You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

    Authorization information

    The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

    • Operation: the value that you can use in the Action element to specify the operation on a resource.
    • Access level: the access level of each operation. The levels are read, write, and list.
    • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
      • The required resource types are displayed in bold characters.
      • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
    • Condition Key: the condition key that is defined by the cloud service.
    • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
    OperationAccess levelResource typeCondition keyAssociated operation
    ens:CreateLoadBalancerUDPListenercreate
    *All Resources
    *
      none
    		none

    Request parameters

    ParameterTypeRequiredDescriptionExample
    LoadBalancerIdstringYes

    The ID of the Edge Load Balancer (ELB) instance.

    		lb-5q73cv04zeyh43lh74lp4****
    ListenerPortintegerYes

    The listener port that is used by Edge Load Balancer (ELB) to receive requests and forward the requests to backend servers. Valid values: 1 to 65535.

    Note You cannot specify ports 250, 4789, or 4790 for UDP listeners. They are system reserved ports.
    		80
    DescriptionstringNo

    The name of the listener. The value must be 1 to 80 characters in length.

    Note The value cannot start with http:// or https://.
    		example
    SchedulerstringNo

    The scheduling algorithm. Valid values:

    • wrr: Backend servers with higher weights receive more requests than backend servers with lower weights. This is the default value.
    • wlc: Requests are distributed based on the weight and load of each backend server. The load refers to the number of connections on a backend server. If two backend servers have the same weight, the backend server that has fewer connections receives more requests.
    • rr: Requests are distributed to backend servers in sequence.
    • sch: Consistent hashing that is based on source IP addresses. Requests from the same source IP address are distributed to the same backend server.
    • qch: Consistent hashing based on Quick UDP Internet Connection (QUIC) IDs. Requests that contain the same QUIC ID are scheduled to the same backend server.
    • iqch: Consistent hashing based on three specific bytes of iQUIC CID. Requests with the same second, third, and forth bytes are scheduled to the same backend server.
    		wrr
    HealthyThresholdintegerNo

    The number of consecutive successful health checks that must occur before an unhealthy and inaccessible backend server is declared healthy and accessible. Valid values: 2 to 10. Default value: 3.

    		4
    UnhealthyThresholdintegerNo

    The number of consecutive failed health checks that must occur before a healthy and accessible backend server is declared unhealthy and inaccessible. Valid values: 2 to 10. Default value: 3.

    		4
    HealthCheckConnectTimeoutintegerNo

    The timeout period for a health check response. If a backend server does not respond within the specified timeout period, the server fails the health check.

    • Default value: 5.
    • Valid values: 1 to 300.
    • Unit: seconds.
    Note If the value of the HealthCheckConnectTimeout parameter is smaller than that of the HealthCheckInterval parameter, the timeout period specified by the HealthCheckConnectTimeout parameter becomes invalid and the value of the HealthCheckInterval parameter is used as the timeout period.
    		100
    HealthCheckIntervalintegerNo

    The interval at which health checks are performed. Valid values: 1 to 50. Default value: 2. Unit: seconds.

    		3
    BackendServerPortintegerNo

    The port used by the backend ELB server of the ELB instance. Valid values: 1 to 65535.

    		8080
    HealthCheckConnectPortintegerNo

    The port that is used for health checks. Valid values: 1 to 65535. If you leave this parameter empty, the port specified by BackendServerPort is used for health checks.

    		8080
    HealthCheckReqstringNo

    The request string for UDP listener health checks. The string can be up to 64 characters in length and can contain only letters and digits.

    		hello
    HealthCheckExpstringNo

    The response string for UDP listener health checks. The string can be up to 64 characters in length and can contain only letters and digits.

    		ok
    EipTransmitstringNo

    Specifies whether to enable Elastic IP address (EIP) pass-through. Valid values:

    • on
    • off (default)
    		on

    Response parameters

    ParameterTypeDescriptionExample
    object

    Schema of Response

    RequestIdstring

    The ID of the request.

    		06F00FBB-3D9E-4CCE-9D43-1A6946A75456

    Examples

    Sample success responses

    JSONformat

    {
  "RequestId": "06F00FBB-3D9E-4CCE-9D43-1A6946A75456"
}

    Error codes

    HTTP status codeError codeError messageDescription
    400Invalid%sThe specified parameter %s is invalid.-
    400Missing%sYou must specify the parameter %s.-
    400IncorrectInstanceStatusThe current status of the resource does not support this operation.The current operation is not supported. The disk is being reset.
    400ens.interface.errorFailed to call API.-
    400LoadBalancerNotFoundThe input parameter LoadBalancerId that is not found.The load balancing instance does not exist.
    400ListenerAlreadyExistsThe listenerPort already exists.Listener already exists
    400NoPermissionPermission denied.-
    400InvalidParameter.%sThe specified field %s invalid. Please check it again.-

    For a list of error codes, visit the Service error codes.

    Change history

    Change timeSummary of changesOperation
    2024-08-20The Error code has changed. The request parameters of the API has changedView Change Details