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社内勉強会のAWSハンズオンから1年が経ってしまったのでここでCloudformationのテンプレートを供養する

に公開
AWS
WordPress
CloudFormation
tech

なぜ今更この記事を書いたか

  • 1年もたつと忘れてしまう
  • せっかく作ったので記録として残しておきたい
  • （最近のAIに聞けば何でも教えてくれるからあまり必要はないけど・・）
  • 社内勉強会であまり使われなかったからさ・・（これが真の理由）

Cloudformationとは

  • AWSが提供するインフラストラクチャ自動化ツール
  • YAMLまたはJSONで記述したテンプレートを使用して、AWSリソースを作成できる
  • コード化でインフラの構築、管理、更新が効率化できる
  • 環境の一貫性を保ちながら手動操作によるミスを減らすことができる

このテンプレートでできること

※注意：作った当時から1年たっているので内容は異なる可能性があります

「スケーラブルウェブサイト構築 ハンズオン」の「wordpress の初期設定」までを実施

  • VPC作成
  • EC2作成
  • RDS作成
  • ELB作成
    => ここまでをCloudformationで作成

そのあとの以下はGUIからなので手動で実施

  • wordpress の初期設定
    => これで冗長構成のうちの片側の構成ができます

https://catalog.us-east-1.prod.workshops.aws/workshops/47782ec0-8e8c-41e8-b873-9da91e822b36/ja-JP

構成図だと以下のところまでをこのCloudformationテンプレートで作成します

テンプレート

  • パラメータの HandsonName はリソース識別用です
  • デフォルトでは「handson-」としており handson-xxxx みたいに任意の文字列をそのあとに入力することを想定しました
  • もともと勉強会で複数人でが同時実行できるようにしたかったためです
    • 例えば、以下のように複数人が同時に作成してもリソースが識別できます（逆にこれしないとかぶって作成できなかった）
      • handson-a.tanaka
      • handson-b.sato
      • handson-c.suzuki
AWSTemplateFormatVersion: "2010-09-09"
Description: VPC, EC2, ELB, RDS for handson 
# handson: https://catalog.us-east-1.prod.workshops.aws/workshops/47782ec0-8e8c-41e8-b873-9da91e822b36/ja-JP

# ------------------------------------------------------------#
#  Metadata
# ------------------------------------------------------------#
Metadata:
  AWS::CloudFormation::Interface:
    ParameterGroups:
      -
        Label:
          default: handson Configuration
        Parameters:
          - HandsonName
      -
        Label:
          default: VPC Configuration
        Parameters:
          - VpcCidrBlock
          - PublicSubnet1CidrBlock
          - PublicSubnet2CidrBlock
          - PrivateSubnet1CidrBlock
          - PrivateSubnet2CidrBlock
          - AvailabilityZone1
          - AvailabilityZone2
      -
        Label:
          default: EC2 Configuration
        Parameters:
          - MyIP
          - EC2AMIId
      -
        Label:
          default: RDS Configuration
        Parameters:
          - DatabaseName
          - DatabaseMasterName
          - DatabaseMasterPassword

# ------------------------------------------------------------#
#  Parameters
# ------------------------------------------------------------#
Parameters:
  HandsonName:
    Type: String
    Default: handson-
  VpcCidrBlock:
    Type: String
    Default: 10.0.0.0/16
  PublicSubnet1CidrBlock:
    Type: String
    Default: 10.0.0.0/24
  PublicSubnet2CidrBlock:
    Type: String
    Default: 10.0.1.0/24
  PrivateSubnet1CidrBlock:
    Type: String
    Default: 10.0.2.0/24
  PrivateSubnet2CidrBlock:
    Type: String
    Default: 10.0.3.0/24
  AvailabilityZone1:
    Type: AWS::EC2::AvailabilityZone::Name
  AvailabilityZone2:
    Type: AWS::EC2::AvailabilityZone::Name
  MyIP:
    Type: String
    Description: my global ip address with /32 ex) aaa.bbb.ccc.ddd/32
  EC2AMIId:
    Description: AMI ID
    Type : AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>
    # Default: /aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2
    Default: /aws/service/ami-amazon-linux-latest/al2023-ami-minimal-kernel-default-x86_64
  DatabaseName:
    Description: Database Name
    Type : String
    Default: wordpress
  DatabaseMasterName:
    Description: Database Master User Namee
    Type : String
    Default: admin
  DatabaseMasterPassword:
    Description: Database Master User Password
    Type : String
    NoEcho: true

Resources:
  # ------------------------------------------------------------#
  #  VPC
  # ------------------------------------------------------------#
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !Ref VpcCidrBlock
      EnableDnsSupport: true
      EnableDnsHostnames: true
      InstanceTenancy: default
      Tags:
        - Key: Name
          Value: !Ref HandsonName

  # ------------------------------------------------------------#
  #  Internet Gateway
  # ------------------------------------------------------------#         
  InternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Sub ${HandsonName}-igw
  AttachGatewayToVPC:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      InternetGatewayId: !Ref InternetGateway
      VpcId: !Ref VPC

  # ------------------------------------------------------------#
  #  Route Table to internet gateway
  # ------------------------------------------------------------#
  RouteTablePublicSubnet:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${HandsonName}-rtb-public
  RoutePublic:
    Type: AWS::EC2::Route
    DependsOn: AttachGatewayToVPC
    Properties:
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway
      RouteTableId: !Ref RouteTablePublicSubnet

  # ------------------------------------------------------------#
  #  Public Sunbet 1
  # ------------------------------------------------------------#
  PublicSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: !Ref PublicSubnet1CidrBlock
      AvailabilityZone: !Ref AvailabilityZone1
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${HandsonName}-subnet-public-1a
  RouteTableAssociationPublic1:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet1
      RouteTableId: !Ref RouteTablePublicSubnet

  # ------------------------------------------------------------#
  #  Public Sunbet 2
  # ------------------------------------------------------------#
  PublicSubnet2:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: !Ref PublicSubnet2CidrBlock
      AvailabilityZone: !Ref AvailabilityZone2
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${HandsonName}-subnet-public-1c
  RouteTableAssociationPublic2:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet2
      RouteTableId: !Ref RouteTablePublicSubnet 

  # ------------------------------------------------------------#
  #  Private Sunbet 1
  # ------------------------------------------------------------#
  PrivateSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: !Ref PrivateSubnet1CidrBlock
      AvailabilityZone: !Ref AvailabilityZone1
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${HandsonName}-subnet-private-1a

  # ------------------------------------------------------------#
  #  Private Sunbet 2
  # ------------------------------------------------------------#
  PrivateSubnet2:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: !Ref PrivateSubnet2CidrBlock
      AvailabilityZone: !Ref AvailabilityZone2
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${HandsonName}-subnet-private-1c
  # ------------------------------------------------------------#
  #  Route Table private
  # ------------------------------------------------------------#
  RouteTablePrivate1:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${HandsonName}-rtb-private1-1a
  RouteTablePrivate2:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${HandsonName}-rtb-private1-1c
  PrivateSubnet1RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PrivateSubnet1
      RouteTableId: !Ref RouteTablePrivate1
  PrivateSubnet2RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PrivateSubnet2
      RouteTableId: !Ref RouteTablePrivate2

  # ------------------------------------------------------------#
  #  ALB Security Group
  # ------------------------------------------------------------#
  SecurityGroupALB:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupName: !Sub ${HandsonName}-alb-sg
      GroupDescription: !Sub ${HandsonName}-alb-sg
      VpcId: !Ref VPC
      SecurityGroupIngress:
        # http
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: !Ref MyIP
      Tags: 
        - Key: HandsonName
          Value: !Ref HandsonName
        - Key: Name
          Value: !Sub ${HandsonName}-alb-sg
  # ------------------------------------------------------------#
  #  ALB
  # ------------------------------------------------------------#
  ApplicationLoadBalancer:
    Type : AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Name: !Sub ${HandsonName}-elb
      Scheme: "internet-facing"
      SecurityGroups:
        - !Ref SecurityGroupALB
      # At least two subnet is needed
      Subnets:
        - !Ref PublicSubnet1
        - !Ref PublicSubnet2
      Tags: 
        - Key: Name
          Value: !Sub ${HandsonName}-elb
  # ------------------------------------------------------------#
  #  EC2 Security Group
  # ------------------------------------------------------------#
  SecurityGroupEC2:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupName: !Sub ${HandsonName}-web-sg
      GroupDescription: !Sub ${HandsonName}-web-sg
      VpcId: !Ref VPC
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: !Ref MyIP
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          SourceSecurityGroupId: !Ref SecurityGroupALB
      Tags: 
        - Key: Name
          Value: !Sub ${HandsonName}-web-sg

  # ------------------------------------------------------------#
  #  EC2
  # ------------------------------------------------------------#
  WebServer: 
    Type: AWS::EC2::Instance
    Properties: 
      AvailabilityZone: !Ref AvailabilityZone1
      BlockDeviceMappings: 
        - DeviceName: /dev/xvda
          Ebs:
            VolumeSize: 8
            VolumeType: gp3
      ImageId: !Ref EC2AMIId
      InstanceInitiatedShutdownBehavior: 'stop'
      InstanceType: t2.micro
      NetworkInterfaces:
        - AssociatePublicIpAddress: true
          DeviceIndex: '0'
          SubnetId: !Ref PublicSubnet1
          GroupSet:
            - !Ref SecurityGroupEC2
      Tenancy: default
      Tags: 
        - Key: Name
          Value: !Sub ${HandsonName}-webserver#1
      UserData:
        Fn::Base64: |
          #!/bin/bash
          yum update -y
          yum install -y httpd wget php-fpm php-mysqli php-json php php-devel mariadb105
          wget http://ja.wordpress.org/latest-ja.tar.gz -P /tmp/
          tar zxvf /tmp/latest-ja.tar.gz -C /tmp
          cp -r /tmp/wordpress/* /var/www/html/
          chown apache:apache -R /var/www/html
          systemctl enable httpd.service
          systemctl start httpd.service
          yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm
          systemctl restart amazon-ssm-agent

  # ------------------------------------------------------------#
  #  Target Group 
  # ------------------------------------------------------------#
  ALBTargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      HealthCheckPath: /wp-includes/images/blank.gif
      HealthCheckEnabled: True
      Name: !Sub ${HandsonName}-target
      Port: 80
      Protocol: HTTP
      Targets:
        - Id: !Ref WebServer
          Port: 80
      VpcId: !Ref VPC
  
  # ------------------------------------------------------------#
  #  ALB Listner
  # ------------------------------------------------------------#
  ALBListener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      DefaultActions:
        - TargetGroupArn: !Ref ALBTargetGroup
          Type: forward
      LoadBalancerArn: !Ref ApplicationLoadBalancer
      Port: 80
      Protocol: HTTP

  # ------------------------------------------------------------#
  #  Database Subnet Group
  # ------------------------------------------------------------#
  DBSubnetGroup:
    Type: AWS::RDS::DBSubnetGroup
    Properties: 
      DBSubnetGroupDescription: !Sub ${HandsonName}-db-subnet
      DBSubnetGroupName: !Sub ${HandsonName}-db-subnet
      SubnetIds: 
        - !Ref PrivateSubnet1
        - !Ref PrivateSubnet2
      Tags: 
        - Key: Name
          Value: !Sub ${HandsonName}-db-subnet

  # ------------------------------------------------------------#
  #  RDS Security Group
  # ------------------------------------------------------------#
  SecurityGroupRDS:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupName: !Sub ${HandsonName}-rds-sg
      GroupDescription: Allow Request from WebServer
      VpcId: !Ref VPC
      SecurityGroupIngress:
        # http
        - IpProtocol: tcp
          FromPort: 3306
          ToPort: 3306
          SourceSecurityGroupId: !Ref SecurityGroupEC2
      Tags: 
        - Key: Name
          Value: !Sub ${HandsonName}-rds-sg

  # ------------------------------------------------------------#
  #  RDS 
  # ------------------------------------------------------------#
  Database:
    Type: AWS::RDS::DBInstance
    Properties: 
      AllocatedStorage: 20
      AutoMinorVersionUpgrade: true
      AvailabilityZone: !Ref AvailabilityZone1
      BackupRetentionPeriod: 0
      DBInstanceClass: db.t3.micro
      DBInstanceIdentifier: !Sub ${HandsonName}-rds
      DBName: !Ref DatabaseName
      DBSubnetGroupName: !Ref DBSubnetGroup
      DeletionProtection: false
      Engine: mysql
      EngineVersion: 8.0.35
      MasterUsername: !Ref DatabaseMasterName
      MasterUserPassword: !Ref DatabaseMasterPassword
      MaxAllocatedStorage: 1000
      MultiAZ: false
      PubliclyAccessible: false
      StorageEncrypted: false
      StorageType: gp2
      VPCSecurityGroups: 
        - !Ref SecurityGroupRDS

# ------------------------------------------------------------#
#  Outputs
# ------------------------------------------------------------#
Outputs:
  # ------------------------------------------------------------#
  #  ALB 
  # ------------------------------------------------------------#
  ALBDNSName:
    Description: ALB DNS Name
    Value: !GetAtt ApplicationLoadBalancer.DNSName
  # ------------------------------------------------------------#
  #  RDS 
  # ------------------------------------------------------------#
  RDSDBInstanceEndpoint:
    Description: RDS Endpoint
    Value: !GetAtt Database.Endpoint.Address

github

ここにも置いた
https://github.com/forestysk/aws_handson/blob/main/itoq-handson-wordpress-1.yaml

参考サイト

https://zenn.dev/soshimiyamoto/articles/2d835cf2c3fb5a

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