ALIYUN::SLB::VServerGroup is used to create a VServer group and attach backend servers to an SLB instance.

Syntax

{
  "Type": "ALIYUN::SLB::VServerGroup",
  "Properties": {
    "VServerGroupName": String,
    "BackendServers": List,
    "LoadBalancerId": String
  }
}

Properties

Property Type Required Editable Description Constraint
VServerGroupName String Yes No The name of the VServer group. None.
BackendServers List No Yes The list of ECS instances to be attached. You can attach a maximum of 20 ECS instances.

For more information, see BackendServers properties.

LoadBalancerId String Yes No The ID of the SLB instance. None.

BackendServers syntax

"BackendServers": [
  {
    "ServerId": String,
    "Port": Integer,
    "Weight": Integer
  }
]

BackendServers properties

Property Type Required Editable Description Constraint
ServerId String Yes Yes The ID of the ECS instance. None.
Port Integer Yes Yes The backend port number used by the SLB instance. Valid values: 1 to 65535.
Weight Integer No Yes The weight of the ECS instance to be attached to the SLB instance. Valid values: 0 to 100.

Response parameters

Fn::GetAtt

  • VServerGroupId: the ID of the VServer group.
  • BackendServers: the list of backend servers attached to the SLB instance.

Examples

JSON format 

{
  "ROSTemplateFormatVersion": "2015-09-01",
  "Parameters": {
    "VServerGroupName": {
      "Type": "String",
      "Description": "Display name of the VServerGroup."
    },
    "LoadBalancerId": {
      "Type": "String",
      "Description": "The id of load balancer."
    },
    "BackendServers": {
      "Type": "Json",
      "Description": "The list of a combination of ECS Instance-Port-Weight.Same ecs instance with different port is allowed, but same ecs instance with same port isn't."
    }
  },
  "Resources": {
    "VServerGroup": {
      "Type": "ALIYUN::SLB::VServerGroup",
      "Properties": {
        "VServerGroupName": {
          "Ref": "VServerGroupName"
        },
        "LoadBalancerId": {
          "Ref": "LoadBalancerId"
        },
        "BackendServers": {
          "Ref": "BackendServers"
        }
      }
    }
  },
  "Outputs": {
    "VServerGroupId": {
      "Description": "The id of VServerGroup created.",
      "Value": {
        "Fn::GetAtt": [
          "VServerGroup",
          "VServerGroupId"
        ]
      }
    },
    "BackendServers": {
      "Description": "Backend server list in this VServerGroup.",
      "Value": {
        "Fn::GetAtt": [
          "VServerGroup",
          "BackendServers"
        ]
      }
    }
  }
}

YAML format 

ROSTemplateFormatVersion: '2015-09-01'
Parameters:
  VServerGroupName:
    Type: String
    Description: Display name of the VServerGroup.
  LoadBalancerId:
    Type: String
    Description: The id of load balancer.
  BackendServers:
    Type: Json
    Description: >-
      The list of a combination of ECS Instance-Port-Weight.Same ecs instance
      with different port is allowed, but same ecs instance with same port
      isn't.
Resources:
  VServerGroup:
    Type: 'ALIYUN::SLB::VServerGroup'
    Properties:
      VServerGroupName:
        Ref: VServerGroupName
      LoadBalancerId:
        Ref: LoadBalancerId
      BackendServers:
        Ref: BackendServers
Outputs:
  VServerGroupId:
    Description: The id of VServerGroup created.
    Value:
      'Fn::GetAtt':
        - VServerGroup
        - VServerGroupId
  BackendServers:
    Description: Backend server list in this VServerGroup.
    Value:
      'Fn::GetAtt':
        - VServerGroup
        - BackendServers