毎回，AWS CLIとCloudFormationの組合せで悩む。
CloudFormation一発で作ってしまえればいいのだが，それだとtemplateが大きくなりすぎてメンテナンスできない。
私の場合は講師としてDemonstrationを作る都合もあるので，あまりにも自動化されすぎてしまうと解説ができなくなってしまう。
ということで，基本はCFnのstackをAWS CLIで作るようにしつつ，要所ではAWS CLIをあえて使ってリソースを作る，というのがいいのかもしれない。
PROFILE=default REGION=ap-northeast-1 # create CloudFormation template cat <<EOF >template.yml Description: This template deploys a VPC, with a pair of public and private subnets spread across two Availability Zones. It deploys an internet gateway, with a default route on the public subnets. It deploys a pair of NAT gateways (one in each AZ), and default routes for them in the private subnets. Parameters: EnvironmentName: Description: An environment name that is prefixed to resource names Type: String VpcCIDR: Description: Please enter the IP range (CIDR notation) for this VPC Type: String Default: 10.192.0.0/16 PublicSubnet1CIDR: Description: Please enter the IP range (CIDR notation) for the public subnet in the first Availability Zone Type: String Default: 10.192.10.0/24 PublicSubnet2CIDR: Description: Please enter the IP range (CIDR notation) for the public subnet in the second Availability Zone Type: String Default: 10.192.11.0/24 PrivateSubnet1CIDR: Description: Please enter the IP range (CIDR notation) for the private subnet in the first Availability Zone Type: String Default: 10.192.20.0/24 PrivateSubnet2CIDR: Description: Please enter the IP range (CIDR notation) for the private subnet in the second Availability Zone Type: String Default: 10.192.21.0/24 Resources: VPC: Type: AWS::EC2::VPC Properties: CidrBlock: !Ref VpcCIDR EnableDnsSupport: true EnableDnsHostnames: true Tags: - Key: Name Value: !Ref EnvironmentName InternetGateway: Type: AWS::EC2::InternetGateway Properties: Tags: - Key: Name Value: !Ref EnvironmentName InternetGatewayAttachment: Type: AWS::EC2::VPCGatewayAttachment Properties: InternetGatewayId: !Ref InternetGateway VpcId: !Ref VPC PublicSubnet1: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC AvailabilityZone: !Select [ 0, !GetAZs '' ] CidrBlock: !Ref PublicSubnet1CIDR MapPublicIpOnLaunch: true Tags: - Key: Name Value: !Sub ${EnvironmentName} Public Subnet (AZ1) PublicSubnet2: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC AvailabilityZone: !Select [ 1, !GetAZs '' ] CidrBlock: !Ref PublicSubnet2CIDR MapPublicIpOnLaunch: true Tags: - Key: Name Value: !Sub ${EnvironmentName} Public Subnet (AZ2) PrivateSubnet1: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC AvailabilityZone: !Select [ 0, !GetAZs '' ] CidrBlock: !Ref PrivateSubnet1CIDR MapPublicIpOnLaunch: false Tags: - Key: Name Value: !Sub ${EnvironmentName} Private Subnet (AZ1) PrivateSubnet2: Type: AWS::EC2::Subnet Properties: VpcId: !Ref VPC AvailabilityZone: !Select [ 1, !GetAZs '' ] CidrBlock: !Ref PrivateSubnet2CIDR MapPublicIpOnLaunch: false Tags: - Key: Name Value: !Sub ${EnvironmentName} Private Subnet (AZ2) NatGateway1EIP: Type: AWS::EC2::EIP DependsOn: InternetGatewayAttachment Properties: Domain: vpc NatGateway2EIP: Type: AWS::EC2::EIP DependsOn: InternetGatewayAttachment Properties: Domain: vpc NatGateway1: Type: AWS::EC2::NatGateway Properties: AllocationId: !GetAtt NatGateway1EIP.AllocationId SubnetId: !Ref PublicSubnet1 NatGateway2: Type: AWS::EC2::NatGateway Properties: AllocationId: !GetAtt NatGateway2EIP.AllocationId SubnetId: !Ref PublicSubnet2 PublicRouteTable: Type: AWS::EC2::RouteTable Properties: VpcId: !Ref VPC Tags: - Key: Name Value: !Sub ${EnvironmentName} Public Routes DefaultPublicRoute: Type: AWS::EC2::Route DependsOn: InternetGatewayAttachment Properties: RouteTableId: !Ref PublicRouteTable DestinationCidrBlock: 0.0.0.0/0 GatewayId: !Ref InternetGateway PublicSubnet1RouteTableAssociation: Type: AWS::EC2::SubnetRouteTableAssociation Properties: RouteTableId: !Ref PublicRouteTable SubnetId: !Ref PublicSubnet1 PublicSubnet2RouteTableAssociation: Type: AWS::EC2::SubnetRouteTableAssociation Properties: RouteTableId: !Ref PublicRouteTable SubnetId: !Ref PublicSubnet2 PrivateRouteTable1: Type: AWS::EC2::RouteTable Properties: VpcId: !Ref VPC Tags: - Key: Name Value: !Sub ${EnvironmentName} Private Routes (AZ1) DefaultPrivateRoute1: Type: AWS::EC2::Route Properties: RouteTableId: !Ref PrivateRouteTable1 DestinationCidrBlock: 0.0.0.0/0 NatGatewayId: !Ref NatGateway1 PrivateSubnet1RouteTableAssociation: Type: AWS::EC2::SubnetRouteTableAssociation Properties: RouteTableId: !Ref PrivateRouteTable1 SubnetId: !Ref PrivateSubnet1 PrivateRouteTable2: Type: AWS::EC2::RouteTable Properties: VpcId: !Ref VPC Tags: - Key: Name Value: !Sub ${EnvironmentName} Private Routes (AZ2) DefaultPrivateRoute2: Type: AWS::EC2::Route Properties: RouteTableId: !Ref PrivateRouteTable2 DestinationCidrBlock: 0.0.0.0/0 NatGatewayId: !Ref NatGateway2 PrivateSubnet2RouteTableAssociation: Type: AWS::EC2::SubnetRouteTableAssociation Properties: RouteTableId: !Ref PrivateRouteTable2 SubnetId: !Ref PrivateSubnet2 NoIngressSecurityGroup: Type: AWS::EC2::SecurityGroup Properties: GroupName: "no-ingress-sg" GroupDescription: "Security group with no ingress rule" VpcId: !Ref VPC Outputs: VPC: Description: A reference to the created VPC Value: !Ref VPC PublicSubnets: Description: A list of the public subnets Value: !Join [ ",", [ !Ref PublicSubnet1, !Ref PublicSubnet2 ]] PrivateSubnets: Description: A list of the private subnets Value: !Join [ ",", [ !Ref PrivateSubnet1, !Ref PrivateSubnet2 ]] PublicSubnet1: Description: A reference to the public subnet in the 1st Availability Zone Value: !Ref PublicSubnet1 PublicSubnet2: Description: A reference to the public subnet in the 2nd Availability Zone Value: !Ref PublicSubnet2 PrivateSubnet1: Description: A reference to the private subnet in the 1st Availability Zone Value: !Ref PrivateSubnet1 PrivateSubnet2: Description: A reference to the private subnet in the 2nd Availability Zone Value: !Ref PrivateSubnet2 NoIngressSecurityGroup: Description: Security group with no ingress rule Value: !Ref NoIngressSecurityGroup EOF cat <<EOF >stack-parameters.cfg EnvironmentName=Demo-Environment VpcCIDR=10.10.0.0/16 PublicSubnet1CIDR=10.10.10.0/24 PublicSubnet2CIDR=10.10.11.0/24 PrivateSubnet1CIDR=10.10.20.0/24 PrivateSubnet2CIDR=10.10.21.0/24 EOF STACK_NAME=demo-20240427-06 # create stack with parameters aws cloudformation deploy \ --template-file template.yml \ --stack-name ${STACK_NAME} \ --parameter-overrides $(cat stack-parameters.cfg) aws cloudformation describe-stacks --stack-name ${STACK_NAME} | jq -r '.Stacks[] | .Outputs[] | select(.OutputKey == "Vpc") | .OutputValue ' PUBLIC_SUBNET_1=$(aws cloudformation describe-stacks --stack-name ${STACK_NAME} | jq -r '.Stacks[] | .Outputs[] | select(.OutputKey == "PublicSubnet1") | .OutputValue ') SECURITY_GROUP=$(aws cloudformation describe-stacks --stack-name ${STACK_NAME} | jq -r '.Stacks[] | .Outputs[] | select(.OutputKey == "NoIngressSecurityGroup") | .OutputValue ') cat <<EOF > InstanceProfile.yml AWSTemplateFormatVersion: "2010-09-09" Resources: SSMRole: Type: 'AWS::IAM::Role' Properties: AssumeRolePolicyDocument: Version: "2012-10-17" Statement: - Effect: Allow Principal: Service: - ec2.amazonaws.com Action: - 'sts:AssumeRole' Path: / Policies: - PolicyName: aam-access PolicyDocument: Version: "2012-10-17" Statement: - Effect: Allow Action: - "ssmmessages:CreateDataChannel" - "ssm:UpdateInstanceInformation" - "ssmmessages:OpenDataChannel" - "ssmmessages:OpenControlChannel" - "ssmmessages:CreateControlChannel" Resource: '*' SSMInstanceProfile: Type: 'AWS::IAM::InstanceProfile' Properties: Path: / Roles: - !Ref SSMRole EOF STACK_NAME_PROFILE=sample-profile aws cloudformation deploy \ --template-file InstanceProfile.yml \ --capabilities CAPABILITY_NAMED_IAM \ --stack-name ${STACK_NAME_PROFILE}
