ULB.Pool

Updated on 2023-08-11 GMT+08:00

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Element Description

For ECS groups under a shared load balancer, one listener corresponds to multiple ECS groups. You can add or delete ECS groups as required. An ECS group consists of multiple ECSs.

Element Properties

**Table 1** Property Description
Property	Required	Descripiton
sessionPersistence	No	Session persistence setting Type: ULB.StickySession Value Description: If this option is selected, the session persistence function is enabled by default. Default: {u'type': u'SOURCE_IP'} Suggestion: Set the value based on specifications and requirements.
protocol	Yes	ECS group protocol Type: string Value Description: Supports HTTP and TCP. Value Constraint: The value can be HTTP or TCP. The value must be consistent with the listener protocol. Suggestion: Set the value based on specifications and requirements.
name	No	ECS group name Type: string Value Description: Supports customization. Value Constraint: The value supports a maximum of 64 characters and can only contain digits, letters, underscores (_), and hyphens (-). Suggestion: Customize the value.
lbAlgorithm	Yes	Allocation policy type Type: string Value Description: ROUND_ROBIN: indicates the weighted round robin algorithm. LEAST_CONNECTIONS: indicates the weighted least connection. SOURCE_IP: indicates the source IP algorithm. Default: ROUND_ROBIN Value Constraint: Supports "ROUND_ROBIN","LEAST_CONNECTIONS","SOURCE_IP" Suggestion: Set the value based on specifications and requirements.
listenerId	Yes	ID of the belonged listener Type: string Value Description: Indicates the ID generated after a ULB instance is created, for example, 8abbd7a9-c1f8-440d-96ff-376ee7382082. Value Constraint: The ID must be the listener ID of an existing ULB instance. Suggestion: You are advised to drag the object to the ULB.Listener and use the get_reference function to automatically generate the value. Alternatively, query the ULB listener ID on the ULB page and enter it accordingly.

Relationships Between Elements

**Table 2** Relationship description
Description	Target
ContainedIn	ULB.Listener

Return Value

Property	Type	Description
refID	string	ECS group instance ID

Blueprint Example

tosca_definitions_version: huaweicloud_tosca_version_1_0 
 inputs: 
   pool_protocol: 
     description: ECS group protocol, which must be consistent with the listener protocol 
   pool_listenerId: 
     description: Belonged listener ID 
   pool_lbAlgorithm: 
     description: Allocation policy type 
 node_templates: 
   pool: 
     type: HuaweiCloud.ULB.Pool 
     properties: 
       protocol: 
         get_input: pool_protocol 
       listenerId: 
         get_input: pool_listenerId 
       lbAlgorithm: 
         get_input: pool_lbAlgorithm

Parent topic: List of Elements

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