ULB.Listener

Element Description

The ULB.Listener element indicates the listener under a shared load balancer. One shared load balancer corresponds to multiple listeners. You can add or delete listeners as required.

Element Properties

**Table 1** Property Description
Property	Mandatory	Descripiton
protocol	Yes	Listening protocol Type: string Value Description: This value can be TCP or HTTP. Value Constraint: This value can be TCP or HTTP. Suggestion: Set the value based on the live environment.
description	No	Description Type: string Value Description: Customize the value. Value Constraint: The value supports a maximum of 255 characters. Suggestion: Customize the value.
connectionLimit	No	Maximum number of connections of the listener Type: integer Value Description: If the number of connections is -1, there is no constraints. Value Constraint: The value ranges from -1 to 2147483647. Suggestion: Set the value based on the live environment.
loadBalancerId	Yes	ID of the belonged ULB Type: string Value Description: ID generated after a ULB instance is created, for example, 8abbd7a9-c1f8-440d-96ff-376ee7382082. Value Constraint: The ID must be the ID of an existing ULB instance. Suggestion: You are advised to drag the object to the ULB.LoadBalancer and use the get_reference function to automatically generate the value. Alternatively, obtain the ULB instance ID on the ULB console and enter it accordingly.
port	Yes	Listening port Type: integer Value Description: The value ranges from 1 to 65535. Value Constraint: The value ranges from 1 to 65535. Suggestion: Set the value based on the live environment.
name	No	Listener name Type: string Value Description: Customize the value. Value Constraint: The value supports a maximum of 64 characters and can only contain digits, letters, underscores (_), and hyphens (-). Suggestion: Customize the value.

Relationships Between Elements

**Table 2** Relationship description
Description	Target
Inclusion	ULB.LoadBalancer

Return Value

Property	Type	Description
refName	string	Listener instance name
refID	string	Listener instance ID

Blueprint Example

tosca_definitions_version: cloud_tosca_version_1_0
inputs:
  listener_protocol:
     description: Listening protocol 
    label: ''
  listener_port:
     description: Listening port 
    label: ''
  listener_loadBalancerId:
     description: ID of the belonged ULB 
    label: ''
node_templates:
  listener:
    type: Cloud.ULB.Listener
    properties:
      protocol:
        get_input: listener_protocol
      port:
        get_input: listener_port
      loadBalancerId:
        get_input: listener_loadBalancerId

Parent topic: List of Elements

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