ルール - AWS CloudFormation

ルール

オプションの Rules セクションでは、スタックの作成またはスタックの更新時にテンプレートに渡されるパラメータまたはパラメータの組み合わせを検証します。テンプレートルールを使用するには、テンプレートで Rules を明示的に宣言し、その後にアサーションを記述します。リソースを作成または更新する前に、ルールセクションを使用してパラメータ値を検証します。

ルールの使用

各テンプレートルールは、次の 2 つのプロパティで構成されます。

  • ルール条件 (オプション) — では、ルールがいつ有効になるかを決定します。

  • アサーション (必須) — では、特定のパラメーターにユーザーが指定できる値を示します。

ルールには RuleCondition プロパティを含めることができ、Assertions プロパティを含める必要があります。それぞれのルールごとに、定義できるルール条件は 1 つだけです。Assertions プロパティ内に 1 つまたは複数のアサーションを定義できます。ルール条件を定義しない場合、ルールのアサーションが常に有効になります。

ルール固有の組み込み関数

ルール条件とアサーションを定義するには、ルール固有の組み込み関数を使用します。これは、テンプレートの Rules セクションでのみ使用できる関数です。関数をネストすることができますが、ルール条件またはアサーションの最終結果は、true または false である必要があります。

次のルール固有の組み込み関数を使用して、ルール条件とアサーションを定義できます。

ルール固有の組み込み関数は、ルールの条件またはアサーションで使用されます。条件プロパティにより、AWS CloudFormation によってアサーションが適用されるかどうかが決まります。条件が true に評価された場合、プロビジョニング済み製品の作成または更新時に、AWS CloudFormation はアサーションを評価してパラメータ値が有効かどうか確認します。パラメーター値が無効になっている場合、AWS CloudFormation はスタックを作成または更新しません。条件が false に評価される場合、AWS CloudFormation はパラメータ値を確認せず、スタック操作に進みます。

構文

JSON

テンプレートの Rules セクションは、キーの名前 Rules とそれに続く単一のコロンで構成されます。すべてのルール宣言を囲むには、中括弧を使用する必要があります。複数のルールを宣言する場合は、カンマで区切ります。ルールごとに、引用符で囲んだ論理名、単一のコロン、およびルール条件とアサーションを囲む中括弧から成る形式で宣言します。

{ "Rules": { "Rule01": { "RuleCondition": { "rule-specific intrinsic function": "Value01" }, "Assertions": [ { "Assert": { "rule-specific intrinsic function": "Value02" }, "AssertDescription": "Information about this assert" }, { "Assert": { "rule-specific intrinsic function": "Value03" }, "AssertDescription": "Information about this assert" } ] }, "Rule02": { "Assertions": [ { "Assert": { "rule-specific intrinsic function": "Value04" }, "AssertDescription": "Information about this assert" } ] } } }

YAML

Rules: Rule01: RuleCondition: rule-specific intrinsic function: Value01 Assertions: - Assert: rule-specific intrinsic function: Value02 AssertDescription: Information about this assert - Assert: rule-specific intrinsic function: Value03 AssertDescription: Information about this assert Rule02: Assertions: - Assert: rule-specific intrinsic function: Value04 AssertDescription: Information about this assert

パラメーター値の条件付きの確認

次の例では、2 つのルールが InstanceType パラメータの値をチェックします。Environment パラメーターの値 ( または test) に応じて、ユーザーは InstanceType パラメーターに対して a1.medium または a1.large を指定する必要があります。InstanceType および Environment パラメータは、同じテンプレートの Parameters セクションで宣言する必要があります。

例: JSON

{ "Rules": { "testInstanceType": { "RuleCondition": { "Fn::Equals": [ { "Ref": "Environment" }, "test" ] }, "Assertions": [ { "Assert": { "Fn::Contains": [ [ "a1.medium" ], { "Ref": "InstanceType" } ] }, "AssertDescription": "For a test environment, the instance type must be a1.medium" } ] }, "prodInstanceType": { "RuleCondition": { "Fn::Equals": [ { "Ref": "Environment" }, "prod" ] }, "Assertions": [ { "Assert": { "Fn::Contains": [ [ "a1.large" ], { "Ref": "InstanceType" } ] }, "AssertDescription": "For a production environment, the instance type must be a1.large" } ] } } }

例: YAML

Rules: testInstanceType: RuleCondition: !Equals - !Ref Environment - test Assertions: - Assert: 'Fn::Contains': - - a1.medium - !Ref InstanceType AssertDescription: 'For a test environment, the instance type must be a1.medium' prodInstanceType: RuleCondition: !Equals - !Ref Environment - prod Assertions: - Assert: 'Fn::Contains': - - a1.large - !Ref InstanceType AssertDescription: 'For a production environment, the instance type must be a1.large'

パラメータ間の検証

以下のサンプルテンプレートは、Amazon EC2 Auto Scaling と Elastic Load Balancing を使用したサンプルウェブサイトを作成します。このウェブサイトは、複数のアベイラビリティーゾーンを使用するように設定されます。さらに、このテンプレートには、Auto Scaling ポリシーを実行する CloudWatch アラームが含まれており、しきい値の定義を超えた場合に Auto Scaling グループのインスタンスが追加または削除されます。このテンプレートでは、1 つ以上の Amazon EC2 インスタンスを作成します。

注記

このテンプレートからスタックを作成した場合、AWS リソースに対する料金が発生します。

例: JSON

{ "AWSTemplateFormatVersion": "2010-09-09", "Description": "AWS CloudFormation Sample Template for using Assertions: Create a load balanced, Auto Scaled sample website where the instances are locked down to only accept traffic from the load balancer. This example creates an Auto Scaling group behind a load balancer with a health check. The web site is available on port 80 or 443 based on the input." "Parameters": { "VpcId": { "Type": "AWS::EC2::VPC::Id", "Description": "VpcId of your existing Virtual Private Cloud (VPC)", "ConstraintDescription": "must be the VPC Id of an existing Virtual Private Cloud." }, "Subnets": { "Type": "List<AWS::EC2::Subnet::Id>", "Description": "The list of SubnetIds in your Virtual Private Cloud (VPC)", "ConstraintDescription": "must be a list of at least two existing subnets associated with at least two different availability zones. They should be residing in the selected Virtual Private Cloud." }, "InstanceType": { "Description": "WebServer EC2 instance type", "Type": "String", "Default": "t2.small", "AllowedValues": [ "t2.nano", "t2.micro", "t2.small", "t2.medium", "t2.large", "m4.large", "m4.xlarge", "m4.2xlarge", "m4.4xlarge", "m4.10xlarge", "m3.medium", "m3.large", "m3.xlarge", "m3.2xlarge", "c4.large", "c4.xlarge", "c4.2xlarge", "c4.4xlarge", "c4.8xlarge", "c3.large", "c3.xlarge", "c3.2xlarge", "c3.4xlarge", "c3.8xlarge", "r3.large", "r3.xlarge" ], "ConstraintDescription": "must be a valid EC2 instance type." }, "KeyName": { "Description": "Name of an existing EC2 KeyPair to enable SSH access to the instances", "Type": "AWS::EC2::KeyPair::KeyName", "ConstraintDescription": "must be the name of an existing EC2 KeyPair." }, "SSHLocation": { "Description": "The IP address range that can be used to SSH to the EC2 instances", "Type": "String", "MinLength": "9", "MaxLength": "18", "Default": "0.0.0.0/0", "AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})", "ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x." }, "UseSSL": { "AllowedValues": [ "Yes", "No" ], "ConstraintDescription": "Select Yes to create a HTTPS Listener", "Default": "No", "Description": "Select \"Yes\" to implement SSL, \"No\" to skip (default).", "Type": "String" }, "ALBSSLCertificateARN": { "Default": "", "Description": "[Optional] The ARN of the SSL certificate to be used for the Application Load Balancer", "Type": "String" }, "HostedZoneName": { "AllowedPattern": "^$|(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\-]*[a-zA-Z0-9])\\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\\-]*[A-Za-z0-9])$", "Default": "", "Description": "[Optional] The domain name of a valid Hosted Zone on AWS.", "Type": "String" } }, "Conditions": { "UseALBSSL": { "Fn::Not": [ { "Fn::Equals": [ { "Ref": "UseSSL" }, "Yes" ] } ] } }, "Rules": { "SubnetsInVPC": { "Assertions": [ { "Assert": { "Fn::EachMemberIn": [ { "Fn::ValueOfAll": [ "AWS::EC2::Subnet::Id", "VpcId" ] }, { "Fn::RefAll": "AWS::EC2::VPC::Id" } ] }, "AssertDescription": "All subnets must in the VPC" } ] }, "ValidateHostedZone": { "RuleCondition": { "Fn::Equals": [ { "Ref": "UseSSL" }, "Yes" ] }, "Assertions": [ { "Assert": { "Fn::Not": [ { "Fn::Equals": [ { "Ref": "ALBSSLCertificateARN" }, "" ] } ] }, "AssertDescription": "ACM Certificate value cannot be empty if SSL is required" }, { "Assert": { "Fn::Not": [ { "Fn::Equals": [ { "Ref": "HostedZoneName" }, "" ] } ] }, "AssertDescription": "Route53 Hosted Zone Name is mandatory when SSL is required" } ] } }, "Mappings": { "AWSAMIRegionMap": { "AMI": { "AMZNLINUXHVM": "amzn-ami-hvm-2017.09.1.20171120-x86_64-gp2" }, "ap-northeast-1": { "AMZNLINUXHVM": "ami-da9e2cbc" }, "ap-northeast-2": { "AMZNLINUXHVM": "ami-1196317f" }, "ap-south-1": { "AMZNLINUXHVM": "ami-d5c18eba" }, "ap-southeast-1": { "AMZNLINUXHVM": "ami-c63d6aa5" }, "ap-southeast-2": { "AMZNLINUXHVM": "ami-ff4ea59d" }, "ca-central-1": { "AMZNLINUXHVM": "ami-d29e25b6" }, "eu-central-1": { "AMZNLINUXHVM": "ami-bf2ba8d0" }, "eu-west-1": { "AMZNLINUXHVM": "ami-1a962263" }, "eu-west-2": { "AMZNLINUXHVM": "ami-e7d6c983" }, "sa-east-1": { "AMZNLINUXHVM": "ami-286f2a44" }, "us-east-1": { "AMZNLINUXHVM": "ami-55ef662f" }, "us-east-2": { "AMZNLINUXHVM": "ami-15e9c770" }, "us-west-1": { "AMZNLINUXHVM": "ami-a51f27c5" }, "us-west-2": { "AMZNLINUXHVM": "ami-bf4193c7" } } }, "Resources": { "WebServerGroup": { "Type": "AWS::AutoScaling::AutoScalingGroup", "Properties": { "VPCZoneIdentifier": { "Ref": "Subnets" }, "LaunchConfigurationName": { "Ref": "LaunchConfig" }, "MinSize": "2", "MaxSize": "2", "TargetGroupARNs": [ { "Ref": "ALBTargetGroup" } ] }, "CreationPolicy": { "ResourceSignal": { "Timeout": "PT15M" } }, "UpdatePolicy": { "AutoScalingRollingUpdate": { "MinInstancesInService": "1", "MaxBatchSize": "1", "PauseTime": "PT15M", "WaitOnResourceSignals": "true" } } }, "LaunchConfig": { "Type": "AWS::AutoScaling::LaunchConfiguration", "Metadata": { "Comment": "Install a simple application", "AWS::CloudFormation::Init": { "config": { "packages": { "yum": { "httpd": [] } }, "files": { "/var/www/html/index.html": { "content": { "Fn::Join": [ "\n", [ "<h1>Congratulations, you have successfully launched the AWS CloudFormation sample.<h1>" ] ] }, "mode": "000644", "owner": "root", "group": "root" }, "/etc/cfn/cfn-hup.conf": { "content": { "Fn::Join": [ "", [ "[main]\n", "stack=", { "Ref": "AWS::StackId" }, "\n", "region=", { "Ref": "AWS::Region" }, "\n" ] ] }, "mode": "000400", "owner": "root", "group": "root" }, "/etc/cfn/hooks.d/cfn-auto-reloader.conf": { "content": { "Fn::Join": [ "", [ "[cfn-auto-reloader-hook]\n", "triggers=post.update\n", "path=Resources.LaunchConfig.Metadata.AWS::CloudFormation::Init\n", "action=/opt/aws/bin/cfn-init -v ", " --stack ", { "Ref": "AWS::StackName" }, " --resource LaunchConfig ", " --region ", { "Ref": "AWS::Region" }, "\n", "runas=root\n" ] ] }, "mode": "000400", "owner": "root", "group": "root" } }, "services": { "sysvinit": { "httpd": { "enabled": "true", "ensureRunning": "true" }, "cfn-hup": { "enabled": "true", "ensureRunning": "true", "files": [ "/etc/cfn/cfn-hup.conf", "/etc/cfn/hooks.d/cfn-auto-reloader.conf" ] } } } } } }, "Properties": { "ImageId": { "Fn::FindInMap": [ "AWSAMIRegionMap", { "Ref": "AWS::Region" }, "AMZNLINUXHVM" ] }, "SecurityGroups": [ { "Ref": "InstanceSecurityGroup" } ], "InstanceType": { "Ref": "InstanceType" }, "KeyName": { "Ref": "KeyName" }, "UserData": { "Fn::Base64": { "Fn::Join": [ "", [ "#!/bin/bash -xe\n", "yum update -y aws-cfn-bootstrap\n", "/opt/aws/bin/cfn-init -v ", " --stack ", { "Ref": "AWS::StackName" }, " --resource LaunchConfig ", " --region ", { "Ref": "AWS::Region" }, "\n", "/opt/aws/bin/cfn-signal -e $? ", " --stack ", { "Ref": "AWS::StackName" }, " --resource WebServerGroup ", " --region ", { "Ref": "AWS::Region" }, "\n" ] ] } } } }, "ELBSecurityGroup": { "Type": "AWS::EC2::SecurityGroup", "Properties": { "GroupDescription": "Allow access to the ELB", "VpcId": { "Ref": "VpcId" }, "SecurityGroupIngress": [ { "Fn::If": [ "UseALBSSL", { "IpProtocol": "tcp", "FromPort": 443, "ToPort": 443, "CidrIp": "0.0.0.0/0" }, { "IpProtocol": "tcp", "FromPort": 80, "ToPort": 80, "CidrIp": "0.0.0.0/0" } ] } ] } }, "ApplicationLoadBalancer": { "Type": "AWS::ElasticLoadBalancingV2::LoadBalancer", "Properties": { "Subnets": { "Ref": "Subnets" }, "SecurityGroups": [ { "Ref": "ELBSecurityGroup" } ] } }, "ALBListener": { "Type": "AWS::ElasticLoadBalancingV2::Listener", "Properties": { "DefaultActions": [ { "Type": "forward", "TargetGroupArn": { "Ref": "ALBTargetGroup" } } ], "LoadBalancerArn": { "Ref": "ApplicationLoadBalancer" }, "Port": { "Fn::If": [ "UseALBSSL", 443, 80 ] }, "Protocol": { "Fn::If": [ "UseALBSSL", "HTTPS", "HTTP" ] }, "Certificates": [ { "Fn::If": [ "UseALBSSL", { "CertificateArn": { "Ref": "ALBSSLCertificateARN" } }, { "Ref": "AWS::NoValue" } ] } ] } }, "ALBTargetGroup": { "Type": "AWS::ElasticLoadBalancingV2::TargetGroup", "Properties": { "HealthCheckIntervalSeconds": 30, "HealthCheckTimeoutSeconds": 5, "HealthyThresholdCount": 3, "Port": 80, "Protocol": "HTTP", "UnhealthyThresholdCount": 5, "VpcId": { "Ref": "VpcId" } } }, "InstanceSecurityGroup": { "Type": "AWS::EC2::SecurityGroup", "Properties": { "GroupDescription": "Enable SSH access and HTTP access on the inbound port", "SecurityGroupIngress": [ { "IpProtocol": "tcp", "FromPort": 80, "ToPort": 80, "SourceSecurityGroupId": { "Fn::Select": [ 0, { "Fn::GetAtt": [ "ApplicationLoadBalancer", "SecurityGroups" ] } ] } }, { "IpProtocol": "tcp", "FromPort": 22, "ToPort": 22, "CidrIp": { "Ref": "SSHLocation" } } ], "VpcId": { "Ref": "VpcId" } } }, "RecordSet": { "Type": "AWS::Route53::RecordSetGroup", "Condition": "UseALBSSL", "Properties": { "HostedZoneName": { "Fn::Join": [ "", [ { "Ref": "HostedZoneName" }, "." ] ] }, "RecordSets": [ { "Name": { "Fn::Join": [ "", [ { "Fn::Select": [ "0", { "Fn::Split": [ ".", { "Fn::GetAtt": [ "ApplicationLoadBalancer", "DNSName" ] } ] } ] }, ".", { "Ref": "HostedZoneName" }, "." ] ] }, "Type": "A", "AliasTarget": { "DNSName": { "Fn::GetAtt": [ "ApplicationLoadBalancer", "DNSName" ] }, "EvaluateTargetHealth": true, "HostedZoneId": { "Fn::GetAtt": [ "ApplicationLoadBalancer", "CanonicalHostedZoneID" ] } } } ] } } }, "Outputs": { "URL": { "Description": "URL of the website", "Value": { "Fn::Join": [ "", [ { "Fn::If": [ "UseALBSSL", { "Fn::Join": [ "", [ "https://", { "Fn::Join": [ "", [ { "Fn::Select": [ "0", { "Fn::Split": [ ".", { "Fn::GetAtt": [ "ApplicationLoadBalancer", "DNSName" ] } ] } ] }, ".", { "Ref": "HostedZoneName" }, "." ] ] } ] ] }, { "Fn::Join": [ "", [ "http://", { "Fn::GetAtt": [ "ApplicationLoadBalancer", "DNSName" ] } ] ] } ] } ] ] } } } }

例: YAML

AWSTemplateFormatVersion: 2010-09-09 Description: >- AWS CloudFormation Sample Template for using Assertions: Create a load balanced, Auto Scaled sample website where the instances are locked down to only accept traffic from the load balancer. This example creates an Auto Scaling group behind a load balancer with a health check. The web site is available on port 80 or 443 based on the input. Parameters: VpcId: Type: 'AWS::EC2::VPC::Id' Description: VpcId of your existing Virtual Private Cloud (VPC) ConstraintDescription: must be the VPC Id of an existing Virtual Private Cloud. Subnets: Type: 'List <AWS::EC2::Subnet::Id>' Description: The list of SubnetIds in your Virtual Private Cloud (VPC) ConstraintDescription: >- must be a list of at least two existing subnets associated with at least two different availability zones. They should be residing in the selected Virtual Private Cloud. InstanceType: Description: WebServer EC2 instance type Type: String Default: t2.small AllowedValues: - t2.nano - t2.micro - t2.small - t2.medium - t2.large - m4.large - m4.xlarge - m4.2xlarge - m4.4xlarge - m4.10xlarge - m3.medium - m3.large - m3.xlarge - m3.2xlarge - c4.large - c4.xlarge - c4.2xlarge - c4.4xlarge - c4.8xlarge - c3.large - c3.xlarge - c3.2xlarge - c3.4xlarge - c3.8xlarge - r3.large - r3.xlarge ConstraintDescription: must be a valid EC2 instance type. KeyName: Description: Name of an existing EC2 KeyPair to enable SSH access to the instances Type: 'AWS::EC2::KeyPair::KeyName' ConstraintDescription: must be the name of an existing EC2 KeyPair. SSHLocation: Description: The IP address range that can be used to SSH to the EC2 instances Type: String MinLength: '9' MaxLength: '18' Default: 0.0.0.0/0 AllowedPattern: '(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/(\d{1,2})' ConstraintDescription: must be a valid IP CIDR range of the form x.x.x.x/x. UseSSL: AllowedValues: - 'Yes' - 'No' ConstraintDescription: Select Yes to create a HTTPS Listener Default: 'No' Description: 'Select "Yes" to implement SSL, "No" to skip (default).' Type: String ALBSSLCertificateARN: Default: '' Description: >- [Optional] The ARN of the SSL certificate to be used for the Application Load Balancer Type: String HostedZoneName: AllowedPattern: >- ^$|(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$ Default: '' Description: '[Optional] The domain name of a valid Hosted Zone on AWS.' Type: String Conditions: UseALBSSL: !Not - !Equals - !Ref UseSSL - 'Yes' Rules: SubnetsInVPC: Assertions: - Assert: 'Fn::EachMemberIn': - 'Fn::ValueOfAll': - 'AWS::EC2::Subnet::Id' - VpcId - 'Fn::RefAll': 'AWS::EC2::VPC::Id' AssertDescription: All subnets must in the VPC ValidateHostedZone: RuleCondition: !Equals - !Ref UseSSL - 'Yes' Assertions: - Assert: !Not - !Equals - !Ref ALBSSLCertificateARN - '' AssertDescription: ACM Certificate value cannot be empty if SSL is required - Assert: !Not - !Equals - !Ref HostedZoneName - '' AssertDescription: Route53 Hosted Zone Name is mandatory when SSL is required Mappings: AWSAMIRegionMap: AMI: AMZNLINUXHVM: amzn-ami-hvm-2017.09.1.20171120-x86_64-gp2 ap-northeast-1: AMZNLINUXHVM: ami-da9e2cbc ap-northeast-2: AMZNLINUXHVM: ami-1196317f ap-south-1: AMZNLINUXHVM: ami-d5c18eba ap-southeast-1: AMZNLINUXHVM: ami-c63d6aa5 ap-southeast-2: AMZNLINUXHVM: ami-ff4ea59d ca-central-1: AMZNLINUXHVM: ami-d29e25b6 eu-central-1: AMZNLINUXHVM: ami-bf2ba8d0 eu-west-1: AMZNLINUXHVM: ami-1a962263 eu-west-2: AMZNLINUXHVM: ami-e7d6c983 sa-east-1: AMZNLINUXHVM: ami-286f2a44 us-east-1: AMZNLINUXHVM: ami-55ef662f us-east-2: AMZNLINUXHVM: ami-15e9c770 us-west-1: AMZNLINUXHVM: ami-a51f27c5 us-west-2: AMZNLINUXHVM: ami-bf4193c7 Resources: WebServerGroup: Type: 'AWS::AutoScaling::AutoScalingGroup' Properties: VPCZoneIdentifier: !Ref Subnets LaunchConfigurationName: !Ref LaunchConfig MinSize: '2' MaxSize: '2' TargetGroupARNs: - !Ref ALBTargetGroup CreationPolicy: ResourceSignal: Timeout: PT15M UpdatePolicy: AutoScalingRollingUpdate: MinInstancesInService: '1' MaxBatchSize: '1' PauseTime: PT15M WaitOnResourceSignals: 'true' LaunchConfig: Type: 'AWS::AutoScaling::LaunchConfiguration' Metadata: Comment: Install a simple application 'AWS::CloudFormation::Init': config: packages: yum: httpd: [] files: /var/www/html/index.html: content: !Join - |+ - - >- <h1>Congratulations, you have successfully launched the AWS CloudFormation sample.<h1> mode: '000644' owner: root group: root /etc/cfn/cfn-hup.conf: content: !Join - '' - - | [main] - stack= - !Ref 'AWS::StackId' - |+ - region= - !Ref 'AWS::Region' - |+ mode: '000400' owner: root group: root /etc/cfn/hooks.d/cfn-auto-reloader.conf: content: !Join - '' - - | [cfn-auto-reloader-hook] - | triggers=post.update - > path=Resources.LaunchConfig.Metadata.AWS::CloudFormation::Init - 'action=/opt/aws/bin/cfn-init -v ' - ' --stack ' - !Ref 'AWS::StackName' - ' --resource LaunchConfig ' - ' --region ' - !Ref 'AWS::Region' - |+ - | runas=root mode: '000400' owner: root group: root services: sysvinit: httpd: enabled: 'true' ensureRunning: 'true' cfn-hup: enabled: 'true' ensureRunning: 'true' files: - /etc/cfn/cfn-hup.conf - /etc/cfn/hooks.d/cfn-auto-reloader.conf Properties: ImageId: !FindInMap - AWSAMIRegionMap - !Ref 'AWS::Region' - AMZNLINUXHVM SecurityGroups: - !Ref InstanceSecurityGroup InstanceType: !Ref InstanceType KeyName: !Ref KeyName UserData: !Base64 'Fn::Join': - '' - - | #!/bin/bash -xe - | yum update -y aws-cfn-bootstrap - '/opt/aws/bin/cfn-init -v ' - ' --stack ' - !Ref 'AWS::StackName' - ' --resource LaunchConfig ' - ' --region ' - !Ref 'AWS::Region' - |+ - '/opt/aws/bin/cfn-signal -e $? ' - ' --stack ' - !Ref 'AWS::StackName' - ' --resource WebServerGroup ' - ' --region ' - !Ref 'AWS::Region' - |+ ELBSecurityGroup: Type: 'AWS::EC2::SecurityGroup' Properties: GroupDescription: Allow access to the ELB VpcId: !Ref VpcId SecurityGroupIngress: - !If - UseALBSSL - IpProtocol: tcp FromPort: 443 ToPort: 443 CidrIp: 0.0.0.0/0 - IpProtocol: tcp FromPort: 80 ToPort: 80 CidrIp: 0.0.0.0/0 ApplicationLoadBalancer: Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer' Properties: Subnets: !Ref Subnets SecurityGroups: - !Ref ELBSecurityGroup ALBListener: Type: 'AWS::ElasticLoadBalancingV2::Listener' Properties: DefaultActions: - Type: forward TargetGroupArn: !Ref ALBTargetGroup LoadBalancerArn: !Ref ApplicationLoadBalancer Port: !If - UseALBSSL - 443 - 80 Protocol: !If - UseALBSSL - HTTPS - HTTP Certificates: - !If - UseALBSSL - CertificateArn: !Ref ALBSSLCertificateARN - !Ref 'AWS::NoValue' ALBTargetGroup: Type: 'AWS::ElasticLoadBalancingV2::TargetGroup' Properties: HealthCheckIntervalSeconds: 30 HealthCheckTimeoutSeconds: 5 HealthyThresholdCount: 3 Port: 80 Protocol: HTTP UnhealthyThresholdCount: 5 VpcId: !Ref VpcId InstanceSecurityGroup: Type: 'AWS::EC2::SecurityGroup' Properties: GroupDescription: Enable SSH access and HTTP access on the inbound port SecurityGroupIngress: - IpProtocol: tcp FromPort: 80 ToPort: 80 SourceSecurityGroupId: !Select - 0 - !GetAtt - ApplicationLoadBalancer - SecurityGroups - IpProtocol: tcp FromPort: 22 ToPort: 22 CidrIp: !Ref SSHLocation VpcId: !Ref VpcId RecordSet: Type: 'AWS::Route53::RecordSetGroup' Condition: UseALBSSL Properties: HostedZoneName: !Join - '' - - !Ref HostedZoneName - . RecordSets: - Name: !Join - '' - - !Select - '0' - !Split - . - !GetAtt - ApplicationLoadBalancer - DNSName - . - !Ref HostedZoneName - . Type: A AliasTarget: DNSName: !GetAtt - ApplicationLoadBalancer - DNSName EvaluateTargetHealth: true HostedZoneId: !GetAtt - ApplicationLoadBalancer - CanonicalHostedZoneID Outputs: URL: Description: URL of the website Value: !Join - '' - - !If - UseALBSSL - !Join - '' - - 'https://' - !Join - '' - - !Select - '0' - !Split - . - !GetAtt - ApplicationLoadBalancer - DNSName - . - !Ref HostedZoneName - . - !Join - '' - - 'http://' - !GetAtt - ApplicationLoadBalancer - DNSName