Amazon CloudWatch SyntheticsでVPC内のエンドポイントを監視してみた

AWSTemplateFormatVersion: "2010-09-09"

Description: Test Stack

Parameters:
# ------------------------------------------------------------#
# Parameters
# ------------------------------------------------------------# 
  VPCCIDR:
    Default: 192.168.0.0/16
    Type: String

  PrivateSubnet01CIDR:
    Default: 192.168.0.0/24
    Type: String

  EC2VolumeSize:
    Default: 32
    Type: Number

  EC2VolumeIOPS:
    Default: 3000
    Type: Number

  EC2AMI:
    Default: ami-06fdbb60c8e83aa5e
    Type: AWS::EC2::Image::Id

  EC2InstanceType:
    Default: t3.micro
    Type: String

Resources:
# ------------------------------------------------------------#
# VPC
# ------------------------------------------------------------# 
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !Ref VPCCIDR
      EnableDnsSupport: true
      EnableDnsHostnames: true
      Tags: 
        - Key: Name
          Value: test-vpc

# ------------------------------------------------------------#
# Subnet
# ------------------------------------------------------------# 
  PrivateSubnet01:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: ap-northeast-1a
      CidrBlock: !Ref PrivateSubnet01CIDR
      Tags: 
        - Key: Name
          Value: test-subnet-private-1a
      VpcId: !Ref VPC

# ------------------------------------------------------------#
# RouteTable
# ------------------------------------------------------------# 
  PrivateRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: test-private-rtb

  PrivateRtAssociation1:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref PrivateRouteTable
      SubnetId: !Ref PrivateSubnet01

# ------------------------------------------------------------#
# Security Group
# ------------------------------------------------------------# 
  EC2SG:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: for EC2
      GroupName: test-sg-ec2
      SecurityGroupEgress: 
        - CidrIp: 0.0.0.0/0
          FromPort: -1
          IpProtocol: -1
          ToPort: -1
      SecurityGroupIngress: 
        - CidrIp: 192.168.0.0/16
          FromPort: 80
          IpProtocol: tcp
          ToPort: 80
      Tags: 
        - Key: Name
          Value: test-sg-ec2
      VpcId: !Ref VPC

  VPCEndpointSG:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: for VPC Endpoint
      GroupName: test-sg-vpc-endpoint
      SecurityGroupEgress: 
        - CidrIp: 0.0.0.0/0
          FromPort: -1
          IpProtocol: -1
          ToPort: -1
      SecurityGroupIngress: 
        - CidrIp: 192.168.0.0/16
          FromPort: 443
          IpProtocol: tcp
          ToPort: 443
      Tags: 
        - Key: Name
          Value: test-sg-vpc-endpoint
      VpcId: !Ref VPC

  CloudWatchSyntheticsSG:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: for CloudWatch Synthetics
      GroupName: test-sg-cloudWatch-synthetics
      SecurityGroupEgress: 
        - CidrIp: 0.0.0.0/0
          FromPort: -1
          IpProtocol: -1
          ToPort: -1
      Tags: 
        - Key: Name
          Value: test-sg-cloudWatch-synthetics
      VpcId: !Ref VPC

# ------------------------------------------------------------#
# IAM
# ------------------------------------------------------------# 
  EC2IAMPolicy:
    Type: AWS::IAM::ManagedPolicy
    Properties: 
      PolicyDocument:
        Version: "2012-10-17"
        Statement: 
          - Effect: Allow
            Action:
              - "s3:GetObject"
            Resource: 
              - !Join 
                - ''
                - - 'arn:aws:s3:::amazonlinux.'
                  - !Sub ${AWS::Region}
                  - '.amazonaws.com/*'
              - !Join 
                - ''
                - - 'arn:aws:s3:::amazonlinux-2-repos-'
                  - !Sub ${AWS::Region}
                  - '/*'
      ManagedPolicyName: test-iam-policy-ec2

  EC2IAMRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument: 
        Version: "2012-10-17"
        Statement: 
          - Effect: Allow
            Principal: 
              Service: 
                - ec2.amazonaws.com
            Action: 
              - 'sts:AssumeRole'
      ManagedPolicyArns: 
        - arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore
        - !Ref EC2IAMPolicy
      RoleName: test-iam-role-ec2
      Tags:
        - Key: Name
          Value: test-iam-role-ec2

  EC2IAMInstanceProfile:
    Type: AWS::IAM::InstanceProfile
    Properties:
      InstanceProfileName: test-iam-instanceprofile-ec2
      Roles: 
        - !Ref EC2IAMRole

# ------------------------------------------------------------#
# EC2
# ------------------------------------------------------------# 
  EC2:
    Type: AWS::EC2::Instance
    Properties:
      BlockDeviceMappings: 
        - DeviceName: /dev/xvda
          Ebs:
            DeleteOnTermination: true
            Encrypted: true
            Iops: !Ref EC2VolumeIOPS
            VolumeSize: !Ref EC2VolumeSize
            VolumeType: gp3
      DisableApiTermination: false
      IamInstanceProfile: !Ref EC2IAMInstanceProfile
      ImageId: !Ref EC2AMI
      InstanceType: !Ref EC2InstanceType
      NetworkInterfaces: 
        - DeleteOnTermination: true
          DeviceIndex: 0
          GroupSet: 
            - !Ref EC2SG
          SubnetId: !Ref PrivateSubnet01
      Tags:
        - Key: Name
          Value: test-ec2
      UserData: !Base64 |
        #!/bin/bash
        yum update -y
        yum install httpd -y
        systemctl start httpd
        systemctl enable httpd
        echo "CloudWatch Synthetics Test" > /var/www/html/index.html

# ------------------------------------------------------------#
# VPC Endpoint
# ------------------------------------------------------------# 
  S3Endpoint:
    Type: AWS::EC2::VPCEndpoint
    Properties: 
      RouteTableIds: 
        - !Ref PrivateRouteTable
      ServiceName: !Sub com.amazonaws.${AWS::Region}.s3
      VpcEndpointType: Gateway
      VpcId: !Ref VPC

  SystemsManagerEndpoint:
    Type: AWS::EC2::VPCEndpoint
    Properties:
      VpcEndpointType: Interface
      PrivateDnsEnabled: true
      ServiceName: !Sub com.amazonaws.${AWS::Region}.ssm
      VpcId: !Ref VPC
      SubnetIds:
        - !Ref PrivateSubnet01
      SecurityGroupIds:
        - !Ref VPCEndpointSG

  SystemsManagerMessageEndpoint:
    Type: AWS::EC2::VPCEndpoint
    Properties:
      VpcEndpointType: Interface
      PrivateDnsEnabled: true
      ServiceName: !Sub com.amazonaws.${AWS::Region}.ssmmessages
      VpcId: !Ref VPC
      SubnetIds:
        - !Ref PrivateSubnet01
      SecurityGroupIds:
        - !Ref VPCEndpointSG

  CloudWatchEndpoint:
    Type: AWS::EC2::VPCEndpoint
    Properties:
      VpcEndpointType: Interface
      PrivateDnsEnabled: true
      ServiceName: !Sub com.amazonaws.${AWS::Region}.monitoring
      VpcId: !Ref VPC
      SubnetIds:
        - !Ref PrivateSubnet01
      SecurityGroupIds:
        - !Ref VPCEndpointSG