Questa è la nuova guida AWS CloudFormation di riferimento per i modelli. Aggiorna i segnalibri e i link. Per informazioni su come iniziare CloudFormation, consulta la Guida per l'AWS CloudFormation utente.
Le traduzioni sono generate tramite traduzione automatica. In caso di conflitto tra il contenuto di una traduzione e la versione originale in Inglese, quest'ultima prevarrà.
Esempi di Fn::ForEach
nella sezione Resources
Questi esempi dimostrano l'utilizzo della funzione intrinseca Fn::ForEach
nella sezione Resources
. Per ulteriori informazioni su questa sezione, vedere Risorse nella Guida AWS CloudFormation per l'utente.
Argomenti
Replica di una risorsa Amazon SNS
Questo frammento di esempio restituisce un elenco di quattro argomenti di Amazon SNS, con l'ID logico corrispondente agli elementi della raccolta (Success
, Failure
, Timeout
, Unknown
), con un TopicName
e FifoTopic
corrispondenti impostati su true
.
Nota
Per i modelli che devono funzionare sia con argomenti FIFO che con argomenti standard, puoi utilizzare la DisplayName
proprietà invece diTopicName
. Ciò consente di CloudFormation generare automaticamente i nomi degli argomenti con il .fifo
suffisso appropriato quando FifoTopic
è. true
Basta sostituirlo TopicName
con DisplayName: !Ref TopicName
nella Properties
sezione.
JSON
{ "AWSTemplateFormatVersion": "2010-09-09", "Transform": "AWS::LanguageExtensions", "Resources": { "Fn::ForEach::Topics": [ "TopicName", ["Success", "Failure", "Timeout", "Unknown"], { "SnsTopic${TopicName}": { "Type": "AWS::SNS::Topic", "Properties": { "TopicName": {"Fn::Sub": "${TopicName}.fifo"}, "FifoTopic": true } } } ] } }
YAML
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Resources: 'Fn::ForEach::Topics': - TopicName - [Success, Failure, Timeout, Unknown] - 'SnsTopic${TopicName}': Type: 'AWS::SNS::Topic' Properties: TopicName: !Sub '${TopicName}.fifo' FifoTopic: true
Il modello trasformato sarà equivalente al modello seguente:
AWSTemplateFormatVersion: 2010-09-09 Resources: SnsTopicSuccess: Type: AWS::SNS::Topic Properties: TopicName: Success.fifo FifoTopic: true SnsTopicFailure: Type: AWS::SNS::Topic Properties: TopicName: Failure.fifo FifoTopic: true SnsTopicTimeout: Type: AWS::SNS::Topic Properties: TopicName: Timeout.fifo FifoTopic: true SnsTopicUnknown: Type: AWS::SNS::Topic Properties: TopicName: Unknown.fifo FifoTopic: true
Replica di una risorsa Amazon DynamoDB
Questo frammento di esempio crea quattro risorse AWS::DynamoDB::Table con nomi come Points
, Score
e così via.
JSON
{ "AWSTemplateFormatVersion": "2010-09-09", "Transform": "AWS::LanguageExtensions", "Resources": { "Fn::ForEach::Tables": [ "TableName", ["Points", "Score", "Name", "Leaderboard"], { "DynamoDB${TableName}": { "Type": "AWS::DynamoDB::Table", "Properties": { "TableName": { "Ref": "TableName" }, "AttributeDefinitions": [ { "AttributeName": "id", "AttributeType": "S" } ], "KeySchema": [ { "AttributeName": "id", "KeyType": "HASH" } ], "ProvisionedThroughput": { "ReadCapacityUnits": "5", "WriteCapacityUnits": "5" } } } } ] } }
YAML
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Resources: 'Fn::ForEach::Tables': - TableName - [Points, Score, Name, Leaderboard] - 'DynamoDB${TableName}': Type: 'AWS::DynamoDB::Table' Properties: TableName: !Ref TableName AttributeDefinitions: - AttributeName: id AttributeType: S KeySchema: - AttributeName: id KeyType: HASH ProvisionedThroughput: ReadCapacityUnits: '5' WriteCapacityUnits: '5'
Il modello trasformato sarà equivalente al modello seguente:
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Resources: DynamoDBPoints: Type: AWS::DynamoDB::Table Properties: TableName: Points AttributeDefinitions: - AttributeName: id AttributeType: S KeySchema: - AttributeName: id KeyType: HASH ProvisionedThroughput: ReadCapacityUnits: '5' WriteCapacityUnits: '5' DynamoDBScore: Type: AWS::DynamoDB::Table Properties: TableName: Score AttributeDefinitions: - AttributeName: id AttributeType: S KeySchema: - AttributeName: id KeyType: HASH ProvisionedThroughput: ReadCapacityUnits: '5' WriteCapacityUnits: '5' DynamoDBName: Type: AWS::DynamoDB::Table Properties: TableName: Name AttributeDefinitions: - AttributeName: id AttributeType: S KeySchema: - AttributeName: id KeyType: HASH ProvisionedThroughput: ReadCapacityUnits: '5' WriteCapacityUnits: '5' DynamoDBLeaderboard: Type: AWS::DynamoDB::Table Properties: TableName: Leaderboard AttributeDefinitions: - AttributeName: id AttributeType: S KeySchema: - AttributeName: id KeyType: HASH ProvisionedThroughput: ReadCapacityUnits: '5' WriteCapacityUnits: '5'
Replica di risorse multiple
Questo esempio crea più istanze di AWS::EC2::NatGatewaye AWS:EC2: :EIP utilizzando una convenzione di denominazione di. "{ResourceType}${Identifier}"
È possibile dichiarare più tipi di risorse in un unico loop Fn::ForEach
in modo da sfruttare un singolo identificatore.
I valori univoci per ogni elemento della raccolta sono definiti all'interno della Mappings
sezione, in cui la funzione Fn::FindInMap intrinseca viene utilizzata per fare riferimento al valore corrispondente. Se non Fn::FindInMap
è possibile trovare l'identificatore corrispondente, la Condition
proprietà non verrà impostata come risoluzione su. !Ref AWS:::NoValue
JSON
{ "AWSTemplateFormatVersion": "2010-09-09", "Transform": "AWS::LanguageExtensions", "Conditions": { "TwoNatGateways": {"Fn::Equals": [{"Ref": "AWS::Region"}, "us-east-1"]}, "ThreeNatGateways": {"Fn::Equals": [{"Ref": "AWS::Region"}, "us-west-2"]} }, "Mappings": { "NatGateway": { "Condition": { "B": "TwoNatGateways", "C": "ThreeNatGateways" } } }, "Resources": { "VPC": { "Type": "AWS::EC2::VPC", "Properties": {"CidrBlock": "10.0.0.0/16"} }, "PublicSubnetA": { "Type": "AWS::EC2::Subnet", "Properties": { "VpcId": {"Ref": "VPC"}, "CidrBlock": "10.0.1.0/24", "AvailabilityZone": {"Fn::Select": [0, {"Fn::GetAZs": ""}]} } }, "PublicSubnetB": { "Type": "AWS::EC2::Subnet", "Properties": { "VpcId": {"Ref": "VPC"}, "CidrBlock": "10.0.2.0/24", "AvailabilityZone": {"Fn::Select": [1, {"Fn::GetAZs": ""}]} } }, "PublicSubnetC": { "Type": "AWS::EC2::Subnet", "Properties": { "VpcId": {"Ref": "VPC"}, "CidrBlock": "10.0.3.0/24", "AvailabilityZone": {"Fn::Select": [2, {"Fn::GetAZs": ""}]} } }, "Fn::ForEach::NatGatewayAndEIP": [ "Identifier", [ "A", "B", "C" ], { "NatGateway${Identifier}": { "Type": "AWS::EC2::NatGateway", "Properties": { "AllocationId": {"Fn::GetAtt": [{"Fn::Sub": "NatGatewayAttachment${Identifier}"}, "AllocationId"]}, "SubnetId": {"Ref": {"Fn::Sub": "PublicSubnet${Identifier}"}} }, "Condition": {"Fn::FindInMap": ["NatGateway", "Condition", {"Ref": "Identifier"}, {"DefaultValue": {"Ref": "AWS::NoValue"}}]} }, "NatGatewayAttachment${Identifier}": { "Type": "AWS::EC2::EIP", "Properties": { "Domain": "vpc" }, "Condition": {"Fn::FindInMap": ["NatGateway", "Condition", {"Ref": "Identifier"}, {"DefaultValue": {"Ref": "AWS::NoValue"}}]} } } ] } }
YAML
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Conditions: TwoNatGateways: !Equals [!Ref "AWS::Region", "us-east-1"] ThreeNatGateways: !Equals [!Ref "AWS::Region", "us-west-2"] Mappings: NatGateway: Condition: B: TwoNatGateways C: ThreeNatGateways Resources: VPC: Type: AWS::EC2::VPC Properties: CidrBlock: 10.0.0.0/16 PublicSubnetA: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.1.0/24 AvailabilityZone: !Select [0, !GetAZs ""] PublicSubnetB: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.2.0/24 AvailabilityZone: !Select [1, !GetAZs ""] PublicSubnetC: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.3.0/24 AvailabilityZone: !Select [2, !GetAZs ""] Fn::ForEach::NatGatewayAndEIP: - Identifier - - A - B - C - NatGateway${Identifier}: Type: AWS::EC2::NatGateway Properties: AllocationId: !GetAtt - !Sub NatGatewayAttachment${Identifier} - AllocationId SubnetId: !Ref Fn::Sub: PublicSubnet${Identifier} Condition: !FindInMap - NatGateway - Condition - !Ref Identifier - DefaultValue: !Ref AWS::NoValue NatGatewayAttachment${Identifier}: Type: AWS::EC2::EIP Properties: Domain: vpc Condition: !FindInMap - NatGateway - Condition - !Ref Identifier - DefaultValue: !Ref AWS::NoValue
Il modello trasformato sarà equivalente al modello seguente:
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Conditions: TwoNatGateways: !Equals [!Ref "AWS::Region", "us-east-1"] ThreeNatGateways: !Equals [!Ref "AWS::Region", "us-west-2"] Resources: VPC: Type: AWS::EC2::VPC Properties: CidrBlock: 10.0.0.0/16 PublicSubnetA: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.1.0/24 AvailabilityZone: !Select [0, !GetAZs ""] PublicSubnetB: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.2.0/24 AvailabilityZone: !Select [1, !GetAZs ""] PublicSubnetC: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.3.0/24 AvailabilityZone: !Select [2, !GetAZs ""] NatGatewayA: Type: AWS::EC2::NatGateway Properties: AllocationId: !GetAtt - NatGatewayAttachmentA - AllocationId SubnetId: !Ref PublicSubnetA NatGatewayB: Type: AWS::EC2::NatGateway Properties: AllocationId: !GetAtt - NatGatewayAttachmentB - AllocationId SubnetId: !Ref PublicSubnetB Condition: TwoNatGateways NatGatewayC: Type: AWS::EC2::NatGateway Properties: AllocationId: !GetAtt - NatGatewayAttachmentC - AllocationId SubnetId: !Ref PublicSubnetC Condition: ThreeNatGateways NatGatewayAttachmentA: Type: AWS::EC2::EIP Properties: Domain: vpc NatGatewayAttachmentB: Type: AWS::EC2::EIP Properties: Domain: vpc Condition: TwoNatGateways NatGatewayAttachmentC: Type: AWS::EC2::EIP Properties: Domain: vpc Condition: ThreeNatGateways
Replica di più risorse utilizzando loop Fn::ForEach
nidificati
Questo esempio utilizza i loop Fn::ForEach
nidificati per mappare tre risorse (AWS::EC2::NetworkAcl, AWS::EC2::Subnet e AWS::EC2::SubnetNetworkAclAssociation) l'una con l'altra.
JSON
{ "AWSTemplateFormatVersion": "2010-09-09", "Transform": "AWS::LanguageExtensions", "Resources": { "VPC": { "Type": "AWS::EC2::VPC", "Properties": { "CidrBlock": "10.0.0.0/16", "EnableDnsSupport": "true", "EnableDnsHostnames": "true" } }, "Fn::ForEach::SubnetResources": [ "Prefix", [ "Transit", "Public" ], { "Nacl${Prefix}Subnet": { "Type": "AWS::EC2::NetworkAcl", "Properties": { "VpcId": { "Ref": "VPC" } } }, "Fn::ForEach::LoopInner": [ "Suffix", [ "A", "B", "C" ], { "${Prefix}Subnet${Suffix}": { "Type": "AWS::EC2::Subnet", "Properties": { "VpcId": { "Ref": "VPC" } } }, "Nacl${Prefix}Subnet${Suffix}Association": { "Type": "AWS::EC2::SubnetNetworkAclAssociation", "Properties": { "SubnetId": { "Ref": { "Fn::Sub": "${Prefix}Subnet${Suffix}" } }, "NetworkAclId": { "Ref": { "Fn::Sub": "Nacl${Prefix}Subnet" } } } } } ] } ] } }
YAML
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Resources: VPC: Type: AWS::EC2::VPC Properties: CidrBlock: 10.0.0.0/16 EnableDnsSupport: 'true' EnableDnsHostnames: 'true' 'Fn::ForEach::SubnetResources': - Prefix - [Transit, Public] - 'Nacl${Prefix}Subnet': Type: 'AWS::EC2::NetworkAcl' Properties: VpcId: !Ref 'VPC' 'Fn::ForEach::LoopInner': - Suffix - [A, B, C] - '${Prefix}Subnet${Suffix}': Type: 'AWS::EC2::Subnet' Properties: VpcId: !Ref 'VPC' 'Nacl${Prefix}Subnet${Suffix}Association': Type: 'AWS::EC2::SubnetNetworkAclAssociation' Properties: SubnetId: !Ref 'Fn::Sub': '${Prefix}Subnet${Suffix}' NetworkAclId: !Ref 'Fn::Sub': 'Nacl${Prefix}Subnet'
Il modello trasformato sarà equivalente al modello seguente:
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Resources: VPC: Type: AWS::EC2::VPC Properties: CidrBlock: 10.0.0.0/16 EnableDnsSupport: 'true' EnableDnsHostnames: 'true' NaclTransitSubnet: Type: AWS::EC2::NetworkAcl Properties: VpcId: !Ref VPC TransitSubnetA: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC NaclTransitSubnetAAssociation: Type: AWS::EC2::SubnetNetworkAclAssociation Properties: SubnetId: !Ref TransitSubnetA NetworkAclId: !Ref NaclTransitSubnet TransitSubnetB: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC NaclTransitSubnetBAssociation: Type: AWS::EC2::SubnetNetworkAclAssociation Properties: SubnetId: !Ref TransitSubnetB NetworkAclId: !Ref NaclTransitSubnet TransitSubnetC: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC NaclTransitSubnetCAssociation: Type: AWS::EC2::SubnetNetworkAclAssociation Properties: SubnetId: !Ref TransitSubnetC NetworkAclId: !Ref NaclTransitSubnet NaclPublicSubnet: Type: AWS::EC2::NetworkAcl Properties: VpcId: !Ref VPC PublicSubnetA: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC NaclPublicSubnetAAssociation: Type: AWS::EC2::SubnetNetworkAclAssociation Properties: SubnetId: !Ref PublicSubnetA NetworkAclId: !Ref NaclPublicSubnet PublicSubnetB: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC NaclPublicSubnetBAssociation: Type: AWS::EC2::SubnetNetworkAclAssociation Properties: SubnetId: !Ref PublicSubnetB NetworkAclId: !Ref NaclPublicSubnet PublicSubnetC: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC NaclPublicSubnetCAssociation: Type: AWS::EC2::SubnetNetworkAclAssociation Properties: SubnetId: !Ref PublicSubnetC NetworkAclId: !Ref NaclPublicSubnet
Proprietà replicate di riferimento per una risorsa Amazon EC2
Questo esempio utilizza la funzione intrinseca Fn::ForEach
per fare riferimento alle risorse AWS::EC2::Instance replicate.
JSON
{ "AWSTemplateFormatVersion": "2010-09-09", "Transform": "AWS::LanguageExtensions", "Mappings": { "Instances": { "InstanceType": { "B": "m5.4xlarge", "C": "c5.2xlarge" }, "ImageId": {"A": "
ami-id1
"} } }, "Resources": { "Fn::ForEach::Instances": [ "Identifier", [ "A", "B", "C" ], { "Instance${Identifier}": { "Type": "AWS::EC2::Instance", "Properties": { "InstanceType": {"Fn::FindInMap": ["Instances", "InstanceType", {"Ref": "Identifier"}, {"DefaultValue": "m5.xlarge"}]}, "ImageId": {"Fn::FindInMap": ["Instances", "ImageId", {"Ref": "Identifier"}, {"DefaultValue": "ami-id-default
"}]} } } } ] }, "Outputs": { "SecondInstanceId": { "Description": "Instance Id for InstanceB", "Value": {"Ref": "InstanceB"} }, "SecondPrivateIp": { "Description": "Private IP for InstanceB", "Value": { "Fn::GetAtt": [ "InstanceB", "PrivateIp" ] } } } }
YAML
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Mappings: Instances: InstanceType: B: m5.4xlarge C: c5.2xlarge ImageId: A:
ami-id1
Resources: 'Fn::ForEach::Instances': - Identifier - [A, B, C] - 'Instance${Identifier}': Type: 'AWS::EC2::Instance' Properties: InstanceType: !FindInMap [Instances, InstanceType, !Ref 'Identifier', {DefaultValue: m5.xlarge}] ImageId: !FindInMap [Instances, ImageId, !Ref 'Identifier', {DefaultValue:ami-id-default
}] Outputs: SecondInstanceId: Description: Instance Id for InstanceB Value: !Ref 'InstanceB' SecondPrivateIp: Description: Private IP for InstanceB Value: !GetAtt [InstanceB, PrivateIp]
Il modello trasformato sarà equivalente al modello seguente:
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Resources: InstanceA: Type: AWS::EC2::Instance Properties: InstanceType: m5.xlarge ImageId:
ami-id1
InstanceB: Type: AWS::EC2::Instance Properties: InstanceType: m5.4xlarge ImageId:ami-id-default
InstanceC: Type: AWS::EC2::Instance Properties: InstanceType: c5.2xlarge ImageId:ami-id-default
Outputs: SecondInstanceId: Description: Instance Id for InstanceB Value: !Ref InstanceB SecondPrivateIp: Description: Private IP for InstanceB Value: !GetAtt [InstanceB, PrivateIp]
Replica delle proprietà per una risorsa Amazon EC2
Questo esempio utilizza la funzione intrinseca Fn::ForEach
per ripetere alcune proprietà come ImageId
, InstanceType
e AvailabilityZone
su una risorsa AWS::EC2::Instance.
JSON
{ "AWSTemplateFormatVersion": "2010-09-09", "Transform": "AWS::LanguageExtensions", "Mappings": { "InstanceA": { "Properties": { "ImageId": "
ami-id1
", "InstanceType": "m5.xlarge" } }, "InstanceB": { "Properties": { "ImageId": "ami-id2
" } }, "InstanceC": { "Properties": { "ImageId": "ami-id3
", "InstanceType": "m5.2xlarge", "AvailabilityZone": "us-east-1a" } } }, "Resources": { "Fn::ForEach::Instances": [ "InstanceLogicalId", [ "InstanceA", "InstanceB", "InstanceC" ], { "${InstanceLogicalId}": { "Type": "AWS::EC2::Instance", "Properties": { "DisableApiTermination": true, "UserData": { "Fn::Base64": { "Fn::Join": [ "", [ "#!/bin/bash\n", "yum update -y\n", "yum install -y httpd.x86_64\n", "systemctl start httpd.service\n", "systemctl enable httpd.service\n", "echo \"Hello World from $(hostname -f)\" > /var/www/html/index.html\n" ] ] } }, "Fn::ForEach::Properties": [ "PropertyName", [ "ImageId", "InstanceType", "AvailabilityZone" ], { "${PropertyName}": { "Fn::FindInMap": [ { "Ref": "InstanceLogicalId" }, "Properties", { "Ref": "PropertyName"}, { "DefaultValue": { "Ref": "AWS::NoValue" } } ] } } ] } } } ] } }
YAML
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Mappings: InstanceA: Properties: ImageId:
ami-id1
InstanceType: m5.xlarge InstanceB: Properties: ImageId:ami-id2
InstanceC: Properties: ImageId:ami-id3
InstanceType: m5.2xlarge AvailabilityZone: us-east-1a Resources: 'Fn::ForEach::Instances': - InstanceLogicalId - [InstanceA, InstanceB, InstanceC] - '${InstanceLogicalId}': Type: 'AWS::EC2::Instance' Properties: DisableApiTermination: true UserData: Fn::Base64: !Sub | #!/bin/bash yum update -y yum install -y httpd.x86_64 systemctl start httpd.service systemctl enable httpd.service echo "Hello World from $(hostname -f)" > /var/www/html/index.html 'Fn::ForEach::Properties': - PropertyName - [ImageId, InstanceType, AvailabilityZone] - '${PropertyName}': 'Fn::FindInMap': - Ref: 'InstanceLogicalId' - Properties - Ref: 'PropertyName' - {DefaultValue: !Ref 'AWS::NoValue'}
Il modello trasformato sarà equivalente al modello seguente:
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Resources: InstanceA: Type: AWS::EC2::Instance Properties: DisableApiTermination: true UserData: Fn::Base64: !Sub | #!/bin/bash yum update -y yum install -y httpd.x86_64 systemctl start httpd.service systemctl enable httpd.service echo "Hello World from $(hostname -f)" > /var/www/html/index.html ImageId:
ami-id1
InstanceType: m5.xlarge InstanceB: Type: AWS::EC2::Instance Properties: DisableApiTermination: true UserData: Fn::Base64: !Sub | #!/bin/bash yum update -y yum install -y httpd.x86_64 systemctl start httpd.service systemctl enable httpd.service echo "Hello World from $(hostname -f)" > /var/www/html/index.html ImageId:ami-id2
InstanceC: Type: AWS::EC2::Instance Properties: DisableApiTermination: true UserData: Fn::Base64: !Sub | #!/bin/bash yum update -y yum install -y httpd.x86_64 systemctl start httpd.service systemctl enable httpd.service echo "Hello World from $(hostname -f)" > /var/www/html/index.html ImageId:ami-id3
InstanceType: m5.2xlarge AvailabilityZone: us-east-1a
Passaggio di caratteri non alfanumerici all'interno del modulo Collection
Fn::ForEach
Questo esempio utilizza la &{}
sintassi, che consente il passaggio dei caratteri non alfanumerici (.
e/
) degli indirizzi IP all'interno di. Collection
JSON
{ "AWSTemplateFormatVersion": "2010-09-09", "Transform": "AWS::LanguageExtensions", "Parameters": { "IpAddresses": { "Type": "CommaDelimitedList", "Default": "10.0.2.0/24,10.0.3.0/24,10.0.4.0/24" } }, "Resources": { "VPC": { "Type": "AWS::EC2::VPC", "Properties": { "CidrBlock": "10.0.0.0/16", "EnableDnsSupport": "true", "EnableDnsHostnames": "true" } }, "Fn::ForEach::Subnets": [ "CIDR", { "Ref": "IpAddresses" }, { "Subnet&{CIDR}": { "Type": "AWS::EC2::Subnet", "Properties": { "VpcId": { "Ref": "VPC" }, "CidrBlock": { "Ref": "CIDR" } } } } ] } }
YAML
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Parameters: IpAddresses: Type: CommaDelimitedList Default: '10.0.2.0/24,10.0.3.0/24,10.0.4.0/24' Resources: VPC: Type: AWS::EC2::VPC Properties: CidrBlock: 10.0.0.0/16 EnableDnsSupport: 'true' EnableDnsHostnames: 'true' 'Fn::ForEach::Subnets': - CIDR - !Ref IpAddresses - 'Subnet&{CIDR}': Type: 'AWS::EC2::Subnet' Properties: VpcId: !Ref VPC CidrBlock: !Ref CIDR
Il modello trasformato sarà equivalente al modello seguente:
AWSTemplateFormatVersion: 2010-09-09 Transform: AWS::LanguageExtensions Parameters: IpAddresses: Type: CommaDelimitedList Default: '10.0.2.0/24,10.0.3.0/24,10.0.4.0/24' Resources: VPC: Type: AWS::EC2::VPC Properties: CidrBlock: 10.0.0.0/16 EnableDnsSupport: 'true' EnableDnsHostnames: 'true' Subnet1002024: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.2.0/24 Subnet1003024: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.3.0/24 Subnet1004024: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC CidrBlock: 10.0.4.0/24