本文以ALIYUN::ECS::InstanceGroup資源為例，向您介紹如何對資源的輸出資料行表進行遍曆拼接。
ALIYUN::ECS::InstanceGroup資源用於建立多個ECS執行個體，建立成功後返回的參數都是以列表的形式展開。更多資訊，請參見ALIYUN::ECS::InstanceGroup。
例如，ALIYUN::ECS::InstanceGroup資源的返回參數HostNames為['name1', 'name2']，PrivateIps為['192.168.1.1', 192.168.1.2']，經過遍曆拼接後的結果為['name1:192.168.1.1', 'name2:192.168.1.2']。
您可以在模板的Output部分先使用內建函式Fn::GetAtt擷取對應資源的屬性值，再使用內建函式Fn::MergeMapToList將多個Map合并為一個以Map為元素的列表，最後再使用內建函式Fn::Jq迴圈拼接成需要的格式。
ROSTemplateFormatVersion: '2015-09-01'
Outputs:
testMapping:
Value:
Fn::Jq:
- All
- .[] | "\(.a):\(.b)"
- Fn::MergeMapToList:
- a:
Fn::GetAtt:
- InstanceGroup # 模板中建立的資源部分已省略，下同。
- HostNames
- b:
Fn::GetAtt:
- InstanceGroup
- PrivateIps完整模板樣本
ROSTemplateFormatVersion: '2015-09-01'
Parameters:
VpcId:
Description:
en: The VPC id to create ecs instance.
Default: Null
Required: false
Label:
zh-cn: 專用網路ID
en: VpcId
AssociationProperty: ALIYUN::ECS::VPC::VPCId
Type: String
ImageId:
AssociationPropertyMetadata:
DefaultFilter:
OSType: linux
ImageName: aliyun_3_**
ImageOwnerAlias: system
InstanceType: ${InstanceType}
SupportedImageOwnerAlias:
- system
- self
- others
Description:
zh-cn: 用於啟動ECS執行個體的鏡像ID。包括公用鏡像、自訂鏡像和雲市場鏡像。
en: Image ID to create ecs instance.
Default: Null
Required: false
Label:
zh-cn: 用於啟動ECS執行個體的鏡像ID
en: ImageId
AssociationProperty: ALIYUN::ECS::Image::ImageId
Type: String
VSwitchId:
AssociationPropertyMetadata:
VpcId: ${VpcId}
ZoneId: ${ZoneId}
Description:
en: The vSwitch Id to create ecs instance.
Default: Null
Required: false
Label:
zh-cn: 交換器ID
en: VSwitchId
AssociationProperty: ALIYUN::VPC::VSwitch::VSwitchId
Type: String
Password:
Description:
en: Password of created ecs instance. Must contain at least 3 types of special character, lower character, upper character, number.
Default: Null
Required: false
Label:
zh-cn: ECS執行個體登入密碼
en: Password
AssociationProperty: ALIYUN::ECS::Instance::Password
Type: String
InstanceType:
AssociationPropertyMetadata:
ZoneId: ${ZoneId}
Description:
en: Ecs instance supported instance type, make sure it should be correct.
Default: ecs.g7.xlarge
Required: true
Label:
zh-cn: ECS執行個體規格
en: InstanceType
AssociationProperty: ALIYUN::ECS::Instance::InstanceType
Type: String
MaxAmount:
Description:
en: Max number of instances to create, should be bigger than 'MinAmount' and smaller than 1000.
Default: 2
Required: true
MaxValue: 1000
Label:
zh-cn: 執行個體數量
MinValue: 0
Type: Number
SystemDiskCategory:
AssociationPropertyMetadata:
InstanceType: ${InstanceType}
ZoneId: ${ZoneId}
Description:
en: Category of system disk. Default is cloud_efficiency. support cloud|cloud_efficiency|cloud_ssd|cloud_essd|ephemeral_ssd|cloud_auto|cloud_essd_entry.Old instances will not be changed.
Default: cloud_essd
Required: false
Label:
zh-cn: 系統硬碟類型
en: SystemDiskCategory
AssociationProperty: ALIYUN::ECS::Disk::SystemDiskCategory
AllowedValues:
- cloud_essd
- cloud_efficiency
- cloud_ssd
- cloud
- cloud_auto
- cloud_essd_entry
Type: String
ZoneId:
Description:
en: |-
The ID of the zone to which the instance belongs. For more information,
call the DescribeZones operation to query the most recent zone list.
Default value is empty, which means random selection.
Default: Null
Required: false
Label:
zh-cn: 可用性區域ID
en: ZoneId
AssociationProperty: ZoneId
Type: String
SystemDiskSize:
Description:
en: 'Disk size of the system disk, range from 20 to 500 GB. If you specify with your own image, make sure the system disk size bigger than image size. '
Default: 40
Required: false
Label:
zh-cn: 系統硬碟大小
en: SystemDiskSize
MinValue: 20
Type: Number
SystemDiskPerformanceLevel:
AssociationPropertyMetadata:
Visible:
Condition:
Fn::Equals:
- ${SystemDiskCategory}
- cloud_essd
Description:
zh-cn: 建立ESSD雲端硬碟作為系統硬碟使用時，設定雲端硬碟的效能等級。
en: 'The performance level of the enhanced SSD used as the system disk.Default value: PL1. Valid values:PL0: A single enhanced SSD delivers up to 10,000 random read/write IOPS.PL1: A single enhanced SSD delivers up to 50,000 random read/write IOPS.PL2: A single enhanced SSD delivers up to 100,000 random read/write IOPS.PL3: A single enhanced SSD delivers up to 1,000,000 random read/write IOPS.'
Default: PL0
Required: false
AllowedValues:
- PL0
- PL1
- PL2
- PL3
Label:
zh-cn: ESSD系統硬碟效能等級
Type: String
SecurityGroupId:
Type: String
AssociationProperty: ALIYUN::ECS::SecurityGroup::SecurityGroupId
AssociationPropertyMetadata:
VpcId: ${VpcId}
Resources:
InstanceGroup:
Type: ALIYUN::ECS::InstanceGroup
Properties:
VpcId:
Ref: VpcId
ImageId:
Ref: ImageId
VSwitchId:
Ref: VSwitchId
Password:
Ref: Password
InstanceType:
Ref: InstanceType
MaxAmount:
Ref: MaxAmount
SecurityGroupId:
Ref: SecurityGroupId
SystemDiskCategory:
Ref: SystemDiskCategory
ZoneId:
Ref: ZoneId
SystemDiskSize:
Ref: SystemDiskSize
SystemDiskPerformanceLevel:
Ref: SystemDiskPerformanceLevel
Metadata:
ALIYUN::ROS::Interface:
ParameterGroups:
- Parameters:
- ZoneId
- VpcId
- VSwitchId
- SecurityGroupId
Label:
default:
zh-cn: 網路設定
en: Network Configuration
- Parameters:
- InstanceType
- ImageId
- MaxAmount
Label:
default:
zh-cn: 執行個體與鏡像
en: Instance and Image
- Parameters:
- SystemDiskCategory
- SystemDiskPerformanceLevel
- SystemDiskSize
Label:
default:
zh-cn: 系統硬碟設定
en: System Disk Configuration
- Parameters:
- Password
DefaultExpand: false
Label:
default:
zh-cn: 管理設定
en: Manage Configuration
Outputs:
testMapping:
Value:
Fn::Jq:
- All
- .[] | "\(.a):\(.b)"
- Fn::MergeMapToList:
- a:
Fn::GetAtt:
- InstanceGroup
- HostNames
- b:
Fn::GetAtt:
- InstanceGroup
- PrivateIps