DatadogをインストールしたECSのCFnテンプレート

DatadogをインストールしたECSのCFnテンプレート

ECSの監視をDatadogでしたいんです。
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#Datadog
#Amazon ECS
#AWS
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Clock Icon2021.01.18

この記事は公開されてから1年以上経過しています。情報が古い可能性がありますので、ご注意ください。

DatadogでECSを監視した検証環境がほしく、AWS環境構築とDatadogの設定をCFnで実施しましたのでそのアウトプットです。ECSのデータプレーンはEC2、Fargateでそれぞれ実施しています。

前提

  • Datadogアカウントが作成済みであること（フリートライアル有り）
  • AWSインテグレーションが実施済みであること
  • ECRにApachのイメージ（mod_statusモジュールを使用したExtendedStatusが有効化されていること）が保存されていること

ECS on EC2

ECS on EC2では、コンテナインスタンス上でDatadog Agent（Datadog Docker Agent）のタスクを常駐させる構成となります。これにより、クラスター内すべてのコンテナを監視することが可能になります。以下のような構成です。

sa20210113-11

公式ドキュメントを参考に、上記構成を構築するCFnテンプレートを作成しました。テンプレートを利用する際は、パラメータにDatadogのAPI キーと、ECRに保存した監視対象となるコンテナイメージを指定してください。

sample-ecs-ec2-datadog.yml 
AWSTemplateFormatVersion: 2010-09-09
Metadata:
  AWS::CloudFormation::Interface:
    ParameterGroups:
      - Label:
          default: Common Configuration
        Parameters:
          - SysName
          - Env
      - Label:
          default: ECS App Container Setting
        Parameters:
          - AppContainerImageName
      - Label:
          default: ECS Container Instanse Setting
        Parameters:
          - ContainerInstanseAMI
          - ContainerInstanceType
      - Label:
          default:  ECS Datadog Container Setting
        Parameters:
          - DatadogApiKey
          - DatadogSite

Parameters:
  SysName:
    Type: String
    Default: test

  Env:
    Type: String
    Default: prd
    AllowedValues:
      - prd
      - dev

  AppContainerImageName:
    Type: String
    Default: xxxxxxxxxxxx.dkr.ecr.ap-northeast-1.amazonaws.com/xxxxx:latest

  ContainerInstanseAMI:
    Description: AMI ID
    Type: AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>
    Default: /aws/service/ecs/optimized-ami/amazon-linux-2/recommended/image_id

  ContainerInstanceType:
    Description: ECS Container Instanse EC2 instance type
    Type: String
    Default: t3.small

  DatadogApiKey:
    Type: String
    NoEcho: true

  DatadogSite:
    Type: String
    Default: datadoghq.com

Resources:
# ------------------------------------------------------------#
# VPC
# ------------------------------------------------------------#
  Vpc:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 10.0.0.0/16
      EnableDnsSupport: true
      EnableDnsHostnames: true
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-vpc

  Igw:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-igw

  IgwAttach:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref Vpc
      InternetGatewayId: !Ref Igw

  SubnetPublicA:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: 10.0.1.0/24
      AvailabilityZone: ap-northeast-1a
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-subnet-pub-1a

  SubnetPublicC:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: 10.0.2.0/24
      AvailabilityZone: ap-northeast-1c
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-subnet-pub-1c

  SubnetProtectA:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: 10.0.3.0/24
      AvailabilityZone: ap-northeast-1a
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-subnet-pro-1a

  SubnetProtectC:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: 10.0.4.0/24
      AvailabilityZone: ap-northeast-1c
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-subnet-pro-1c

  RouteTablePublic:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-rtb-pub

  RouteTableProtectA:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-rtb-pro-1a

  RouteTableProtectC:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-rtb-pro-1c

  RouteIgw:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref RouteTablePublic
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref Igw

  AssocationPublicA:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref SubnetPublicA
      RouteTableId: !Ref RouteTablePublic

  AssocationPublicC:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref SubnetPublicC
      RouteTableId: !Ref RouteTablePublic

  NatGatewayEipA:
    Type: AWS::EC2::EIP
    Properties:
      Domain: vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-eip-ngw-1a

  NatGatewayEipC:
    Type: AWS::EC2::EIP
    Properties:
      Domain: vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-eip-ngw-1c

  AssocationProtectA:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref SubnetProtectA
      RouteTableId: !Ref RouteTableProtectA

  AssocationProtectC:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref SubnetProtectC
      RouteTableId: !Ref RouteTableProtectC

  NatGatewayA:
    Type: AWS::EC2::NatGateway
    Properties:
      SubnetId: !Ref SubnetPublicA
      AllocationId: !GetAtt NatGatewayEipA.AllocationId
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-ngw-1a

  NatGatewayC:
    Type: AWS::EC2::NatGateway
    Properties:
      SubnetId: !Ref SubnetPublicC
      AllocationId: !GetAtt NatGatewayEipC.AllocationId
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-ngw-1c

  NatGatewayRouteA:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref RouteTableProtectA
      DestinationCidrBlock: 0.0.0.0/0
      NatGatewayId: !Ref NatGatewayA

  NatGatewayRouteC:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref RouteTableProtectC
      DestinationCidrBlock: 0.0.0.0/0
      NatGatewayId: !Ref NatGatewayC

  NetworkAclPublic:
    Type: AWS::EC2::NetworkAcl
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-nacl-pub

  NetworkAclEntryPublicIngress:
    Type: AWS::EC2::NetworkAclEntry
    Properties:
      CidrBlock: 0.0.0.0/0
      Egress: false
      NetworkAclId: !Ref NetworkAclPublic
      Protocol: -1
      RuleAction : allow
      RuleNumber : 100

  NetworkAclEntryPublicEgress:
    Type: AWS::EC2::NetworkAclEntry
    Properties:
      CidrBlock: 0.0.0.0/0
      Egress: true
      NetworkAclId: !Ref NetworkAclPublic
      Protocol: -1
      RuleAction : allow
      RuleNumber : 100

  NetworkAclProtect:
    Type: AWS::EC2::NetworkAcl
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-nacl-pro

  NetworkAclEntryProtectIngress:
    Type: AWS::EC2::NetworkAclEntry
    Properties:
      CidrBlock: 0.0.0.0/0
      Egress: false
      NetworkAclId: !Ref NetworkAclProtect
      Protocol: -1
      RuleAction : allow
      RuleNumber : 100

  NetworkAclEntryProtectEgress:
    Type: AWS::EC2::NetworkAclEntry
    Properties:
      CidrBlock: 0.0.0.0/0
      Egress: true
      NetworkAclId: !Ref NetworkAclProtect
      Protocol: -1
      RuleAction : allow
      RuleNumber : 100

  NetworkAclAssocationPublicA:
    Type: AWS::EC2::SubnetNetworkAclAssociation
    Properties:
      SubnetId: !Ref SubnetPublicA
      NetworkAclId: !Ref NetworkAclPublic

  NetworkAclAssocationPublicC:
    Type: AWS::EC2::SubnetNetworkAclAssociation
    Properties:
      SubnetId: !Ref SubnetPublicC
      NetworkAclId: !Ref NetworkAclPublic

  NetworkAclAssocationProtectA:
    Type: AWS::EC2::SubnetNetworkAclAssociation
    Properties:
      SubnetId: !Ref SubnetProtectA
      NetworkAclId: !Ref NetworkAclProtect

  NetworkAclAssocationProtectC:
    Type: AWS::EC2::SubnetNetworkAclAssociation
    Properties:
      SubnetId: !Ref SubnetProtectC
      NetworkAclId: !Ref NetworkAclProtect

# ------------------------------------------------------------#
# SecurityGroup
# ------------------------------------------------------------#
  AlbSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      VpcId: !Ref Vpc
      GroupName: !Sub ${SysName}-${Env}-alb-sg
      GroupDescription: SecurityGroup for ALB
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
          Description: from Internet
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-alb-sg

  EcsSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      VpcId: !Ref Vpc
      GroupName: !Sub ${SysName}-${Env}-ecs-container-sg
      GroupDescription: SecurityGroup for ECS Task
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          SourceSecurityGroupId: !Ref AlbSecurityGroup
          Description: from ALB
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          SourceSecurityGroupId: !Ref EcsContainerInstanceSecurityGroup
          Description: from ECS Container Instance
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-ecs-container-sg

  EcsContainerInstanceSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      VpcId: !Ref Vpc
      GroupName: !Sub ${SysName}-${Env}-ecs-container-instance-sg
      GroupDescription: SecurityGroup for ECS Container Instance
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-ecs-container-instance-sg

# ------------------------------------------------------------#
# ALB
# ------------------------------------------------------------#
  Alb:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Name: !Sub ${SysName}-${Env}-alb
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-alb
      Scheme: internet-facing
      SecurityGroups:
        - !Ref AlbSecurityGroup
      Subnets:
        - !Ref SubnetPublicA
        - !Ref SubnetPublicC

  TargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      VpcId: !Ref Vpc
      Name: !Sub ${SysName}-${Env}-tg
      Protocol: HTTP
      Port: 80
      TargetType: ip

  Listener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      DefaultActions:
        - TargetGroupArn: !Ref TargetGroup
          Type: forward
      LoadBalancerArn: !Ref Alb
      Port: 80
      Protocol: HTTP

# ------------------------------------------------------------#
# IAM
# ------------------------------------------------------------#
  EcsTaskExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      RoleName: !Sub ${SysName}-${Env}-ecs-task-execution-role
      Path: /
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy

  EcsTaskExecutionRoleDatadogAgentPolicy:
    Type: AWS::IAM::ManagedPolicy
    Properties:
      ManagedPolicyName:  !Sub ${SysName}-${Env}-dd-agent-policy
      Path: /
      PolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Action:
              - ecs:ListClusters
              - ecs:ListContainerInstances
              - ecs:ListServices
              - ecs:DescribeContainerInstances
            Resource:
              - "*"
      Roles:
        - !Ref EcsTaskExecutionRole

  EcsContainerInstanceRole:
    Type: AWS::IAM::Role
    Properties:
      RoleName: !Sub ${SysName}-${Env}-ecs-ec2-role
      Path: "/"
      AssumeRolePolicyDocument:
        Version: "2012-10-17"
        Statement:
          -
            Effect: "Allow"
            Principal:
              Service:
                - "ec2.amazonaws.com"
            Action:
              - "sts:AssumeRole"
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AmazonEC2ContainerServiceforEC2Role
        - arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore

  EcsContainerInstanceProfile:
    Type: AWS::IAM::InstanceProfile
    Properties:
      Path: /
      Roles:
        - !Ref EcsContainerInstanceRole
      InstanceProfileName: !Sub ${SysName}-${Env}-ecs-ec2-role

# ------------------------------------------------------------#
# Cloudwatch
# ------------------------------------------------------------#
  EcsLogGroupAPP:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub /ecs/logs/${SysName}-${Env}-app-task

  EcsLogGroupDatadog:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub /ecs/logs/${SysName}-${Env}-datadog-agent-task

# ------------------------------------------------------------#
# ECS
# ------------------------------------------------------------#
  EcsCluster:
    Type: AWS::ECS::Cluster
    Properties:
      ClusterName: !Sub ${SysName}-${Env}-ecs-cluster

  EcsTaskDefinitionApp:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: !Sub ${SysName}-${Env}-app-task
      Cpu: 256
      Memory: 512
      ExecutionRoleArn: !Ref EcsTaskExecutionRole
      NetworkMode: awsvpc
      RequiresCompatibilities:
        - EC2
      ContainerDefinitions:
        - Name: app
          Image: !Ref AppContainerImageName
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-group: !Ref EcsLogGroupAPP
              awslogs-region: !Ref AWS::Region
          PortMappings:
            - HostPort: 80
              Protocol: tcp
              ContainerPort: 80
          # Auto discovery setting
          DockerLabels:
              com.datadoghq.ad.check_names: "[\"apache\"]"
              com.datadoghq.ad.instances: "[{\"apache_status_url\":\"http://%%host%%/server-status?auto\"}]"
              com.datadoghq.ad.init_configs: "[{}]"
  EcsTaskDefinitionDatadog:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: !Sub ${SysName}-${Env}-datadog-agent-task
      Volumes:
        - Name: docker_sock
          Host:
            SourcePath: /var/run/docker.sock
        - Name: cgroup
          Host:
            SourcePath: /sys/fs/cgroup/
        - Name: proc
          Host:
            SourcePath: /proc/
      ContainerDefinitions:
        - Name: datadog-agent
          Image: datadog/agent:latest
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-group: !Ref EcsLogGroupDatadog
              awslogs-region: !Ref AWS::Region
          Cpu: 100
          Memory: 512
          Essential: true
          MountPoints:
            - ContainerPath: /var/run/docker.sock
              SourceVolume: docker_sock
            - ContainerPath: /host/sys/fs/cgroup
              SourceVolume: cgroup
            - ContainerPath: /host/proc
              SourceVolume: proc
          Environment:
            - Name: DD_API_KEY
              Value: !Ref DatadogApiKey
            - Name: DD_SITE
              Value: !Ref DatadogSite

  EcsService:
    Type: AWS::ECS::Service
    DependsOn: Listener
    Properties:
      Cluster: !Ref EcsCluster
      LaunchType: EC2
      LoadBalancers:
        - TargetGroupArn: !Ref TargetGroup
          ContainerPort: 80
          ContainerName: app
      SchedulingStrategy: REPLICA
      DesiredCount: 1
      NetworkConfiguration:
       AwsvpcConfiguration:
           SecurityGroups:
             - !Ref EcsSecurityGroup
           Subnets:
             - !Ref SubnetProtectA
             - !Ref SubnetProtectC
      ServiceName: !Sub ${SysName}-${Env}-app
      TaskDefinition: !Ref EcsTaskDefinitionApp

  EcsServiceDatadog:
    Type: AWS::ECS::Service
    Properties:
      ServiceName: !Sub ${SysName}-${Env}-datadog
      Cluster: !Ref EcsCluster
      LaunchType: EC2
      SchedulingStrategy: DAEMON
      TaskDefinition: !Ref EcsTaskDefinitionDatadog

  EcsInstanceLaunchConfiguration:
    Type: AWS::AutoScaling::LaunchConfiguration
    Properties:
      LaunchConfigurationName: !Sub ${SysName}-${Env}-lc
      ImageId: !Ref ContainerInstanseAMI
      InstanceType: !Ref ContainerInstanceType
      IamInstanceProfile: !Ref EcsContainerInstanceProfile
      EbsOptimized: true
      AssociatePublicIpAddress: false
      SecurityGroups:
        -  !Ref EcsContainerInstanceSecurityGroup
      UserData:
        Fn::Base64: !Sub |
          #!/bin/bash -xe
          echo ECS_CLUSTER=${EcsCluster} >> /etc/ecs/ecs.config

  EcsInstanceAsg:
    Type: AWS::AutoScaling::AutoScalingGroup
    Properties:
      VPCZoneIdentifier:
        - !Ref SubnetProtectA
        - !Ref SubnetProtectC
      LaunchConfigurationName: !Ref EcsInstanceLaunchConfiguration
      MinSize: 1
      MaxSize: 1
      DesiredCapacity: 1
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-ecs-container-instanse
          PropagateAtLaunch: true
    UpdatePolicy:
      AutoScalingReplacingUpdate:
        WillReplace: true

上記テンプレートではAWS環境の構築の他、Datadog Agentの設定、オートディスカバリー設定（該当タスクにDockerラベルの付与）を行っています。オートディスカバリーにより、特定のコンテナ上で実行されているアプリケーションを自動で識別しデータを収集することが可能になります。

今回はApacheを利用しているので、こちらに記載のラベルを付与しています。設定値は利用アプリケーションにより異なりますので、設定値については各ページを確認ください。

上記CFnテンプレートで環境を構築することで、インテグレーションにDockerおよびApacheが追加されます。 *1

▲ インテグレーション

Datadog Agentのインストールにより、AWSインテグレーション（ECS）だけでは取得できないDockerのメトリクス（docker.*）が取得されます。 Dockerがインテグレーションされることにより、ダッシュボードも作成されています。

▲ Docker ダッシュボード

Datadog Agentのインストールにより、リアルタイムモニタリングであるライブコンテナ等も確認することが可能になります。

sa20210113-02

▲ ライブコンテナ

CFnテンプレート内で、オートディスカバリーの設定を行っていますので、特定のコンテナ上で稼働しているアプリケーション（今回はApache）が自動で識別され、メトリクス（apache.*）が取得されます。

▲ Apache ダッシュボード

今回は実施しませんでしたが、Datagog Agentの追加設定によりログ収集等も可能になります。

ちなみに、Datadog Agentのインストールおよび、オートディスカバリの設定をせず、ECSインテグレーションのみの場合は、Docker、Apcheのメトリクスやライブコンテナは確認することができません。（ECSインテグレーションのみの場合は、aws.ecs*のようなCloudWatchが出力するメトリクスのみ参照可能。）

▲ ECS ダッシュボード

ECS on Fargate

ECS on Fargateでは、サイドカーコンテナ（監視対象コンテナのタスク定義内にDatadog Agentのコンテナを追加）で監視する構成となります。

sa20210113-10

公式ドキュメントを参考に、上記構成を構築するCFnテンプレートを作成しました。

sample-ecs-fargate-datadog.yml 
AWSTemplateFormatVersion: 2010-09-09
Metadata:
  AWS::CloudFormation::Interface:
    ParameterGroups:
      - Label:
          default: Common Configuration
        Parameters:
          - SysName
          - Env
      - Label:
          default: ECS App Container Setting
        Parameters:
          - AppContainerImageName
      - Label:
          default:  ECS Datadog Container Setting
        Parameters:
          - DatadogApiKey
          - DatadogSite

Parameters:
  SysName:
    Type: String
    Default: test

  Env:
    Type: String
    Default: prd
    AllowedValues:
      - prd
      - dev

  AppContainerImageName:
    Type: String
    Default: xxxxxxxxxxxx.dkr.ecr.ap-northeast-1.amazonaws.com/xxxxx:latest

  DatadogApiKey:
    Type: String
    NoEcho: true

  DatadogSite:
    Type: String
    Default: datadoghq.com

Resources:
# ------------------------------------------------------------#
# VPC
# ------------------------------------------------------------#
  Vpc:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 10.0.0.0/16
      EnableDnsSupport: true
      EnableDnsHostnames: true
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-vpc

  Igw:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-igw

  IgwAttach:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref Vpc
      InternetGatewayId: !Ref Igw

  SubnetPublicA:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: 10.0.1.0/24
      AvailabilityZone: ap-northeast-1a
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-subnet-pub-1a

  SubnetPublicC:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: 10.0.2.0/24
      AvailabilityZone: ap-northeast-1c
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-subnet-pub-1c

  SubnetProtectA:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: 10.0.3.0/24
      AvailabilityZone: ap-northeast-1a
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-subnet-pro-1a

  SubnetProtectC:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref Vpc
      CidrBlock: 10.0.4.0/24
      AvailabilityZone: ap-northeast-1c
      MapPublicIpOnLaunch: false
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-subnet-pro-1c

  RouteTablePublic:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-rtb-pub

  RouteTableProtectA:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-rtb-pro-1a

  RouteTableProtectC:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-rtb-pro-1c

  RouteIgw:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref RouteTablePublic
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref Igw

  AssocationPublicA:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref SubnetPublicA
      RouteTableId: !Ref RouteTablePublic

  AssocationPublicC:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref SubnetPublicC
      RouteTableId: !Ref RouteTablePublic

  NatGatewayEipA:
    Type: AWS::EC2::EIP
    Properties:
      Domain: vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-eip-ngw-1a

  NatGatewayEipC:
    Type: AWS::EC2::EIP
    Properties:
      Domain: vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-eip-ngw-1c

  AssocationProtectA:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref SubnetProtectA
      RouteTableId: !Ref RouteTableProtectA

  AssocationProtectC:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref SubnetProtectC
      RouteTableId: !Ref RouteTableProtectC

  NatGatewayA:
    Type: AWS::EC2::NatGateway
    Properties:
      SubnetId: !Ref SubnetPublicA
      AllocationId: !GetAtt NatGatewayEipA.AllocationId
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-ngw-1a

  NatGatewayC:
    Type: AWS::EC2::NatGateway
    Properties:
      SubnetId: !Ref SubnetPublicC
      AllocationId: !GetAtt NatGatewayEipC.AllocationId
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-ngw-1c

  NatGatewayRouteA:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref RouteTableProtectA
      DestinationCidrBlock: 0.0.0.0/0
      NatGatewayId: !Ref NatGatewayA

  NatGatewayRouteC:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref RouteTableProtectC
      DestinationCidrBlock: 0.0.0.0/0
      NatGatewayId: !Ref NatGatewayC

  NetworkAclPublic:
    Type: AWS::EC2::NetworkAcl
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-nacl-pub

  NetworkAclEntryPublicIngress:
    Type: AWS::EC2::NetworkAclEntry
    Properties:
      CidrBlock: 0.0.0.0/0
      Egress: false
      NetworkAclId: !Ref NetworkAclPublic
      Protocol: -1
      RuleAction : allow
      RuleNumber : 100

  NetworkAclEntryPublicEgress:
    Type: AWS::EC2::NetworkAclEntry
    Properties:
      CidrBlock: 0.0.0.0/0
      Egress: true
      NetworkAclId: !Ref NetworkAclPublic
      Protocol: -1
      RuleAction : allow
      RuleNumber : 100

  NetworkAclProtect:
    Type: AWS::EC2::NetworkAcl
    Properties:
      VpcId: !Ref Vpc
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-nacl-pro

  NetworkAclEntryProtectIngress:
    Type: AWS::EC2::NetworkAclEntry
    Properties:
      CidrBlock: 0.0.0.0/0
      Egress: false
      NetworkAclId: !Ref NetworkAclProtect
      Protocol: -1
      RuleAction : allow
      RuleNumber : 100

  NetworkAclEntryProtectEgress:
    Type: AWS::EC2::NetworkAclEntry
    Properties:
      CidrBlock: 0.0.0.0/0
      Egress: true
      NetworkAclId: !Ref NetworkAclProtect
      Protocol: -1
      RuleAction : allow
      RuleNumber : 100

  NetworkAclAssocationPublicA:
    Type: AWS::EC2::SubnetNetworkAclAssociation
    Properties:
      SubnetId: !Ref SubnetPublicA
      NetworkAclId: !Ref NetworkAclPublic

  NetworkAclAssocationPublicC:
    Type: AWS::EC2::SubnetNetworkAclAssociation
    Properties:
      SubnetId: !Ref SubnetPublicC
      NetworkAclId: !Ref NetworkAclPublic

  NetworkAclAssocationProtectA:
    Type: AWS::EC2::SubnetNetworkAclAssociation
    Properties:
      SubnetId: !Ref SubnetProtectA
      NetworkAclId: !Ref NetworkAclProtect

  NetworkAclAssocationProtectC:
    Type: AWS::EC2::SubnetNetworkAclAssociation
    Properties:
      SubnetId: !Ref SubnetProtectC
      NetworkAclId: !Ref NetworkAclProtect

# ------------------------------------------------------------#
# SecurityGroup
# ------------------------------------------------------------#
  AlbSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      VpcId: !Ref Vpc
      GroupName: !Sub ${SysName}-${Env}-alb-sg
      GroupDescription: SecurityGroup for ALB
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
          Description: from Internet
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-alb-sg

  EcsSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      VpcId: !Ref Vpc
      GroupName: !Sub ${SysName}-${Env}-ecs-container-sg
      GroupDescription: SecurityGroup for ECS
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          SourceSecurityGroupId: !Ref AlbSecurityGroup
          Description: from ALB
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-ecs-container-sg

# ------------------------------------------------------------#
# ALB
# ------------------------------------------------------------#
  Alb:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Name: !Sub ${SysName}-${Env}-alb
      Tags:
        - Key: Name
          Value: !Sub ${SysName}-${Env}-alb
      Scheme: internet-facing
      SecurityGroups:
        - !Ref AlbSecurityGroup
      Subnets:
        - !Ref SubnetPublicA
        - !Ref SubnetPublicC

  TargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      VpcId: !Ref Vpc
      Name: !Sub ${SysName}-${Env}-tg
      Protocol: HTTP
      Port: 80
      TargetType: ip

  Listener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      DefaultActions:
        - TargetGroupArn: !Ref TargetGroup
          Type: forward
      LoadBalancerArn: !Ref Alb
      Port: 80
      Protocol: HTTP

# ------------------------------------------------------------#
# IAM
# ------------------------------------------------------------#
  EcsTaskExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      RoleName: !Sub ${SysName}-${Env}-ecs-task-execution-role
      Path: /
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy

# ------------------------------------------------------------#
# Cloudwatch
# ------------------------------------------------------------#
  EcsLogGroupAPP:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub /ecs/logs/${SysName}-${Env}-app-task

# ------------------------------------------------------------#
# ECS
# ------------------------------------------------------------#
  EcsCluster:
    Type: AWS::ECS::Cluster
    Properties:
      ClusterName: !Sub ${SysName}-${Env}-ecs-cluster

  EcsTaskDefinitionApp:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family: !Sub ${SysName}-${Env}-app-task
      Cpu: 256
      Memory: 512
      ExecutionRoleArn: !Ref EcsTaskExecutionRole
      NetworkMode: awsvpc
      RequiresCompatibilities:
        - FARGATE
      ContainerDefinitions:
        - Name: app
          Image: !Ref AppContainerImageName
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-group: !Ref EcsLogGroupAPP
              awslogs-region: !Ref AWS::Region
              awslogs-stream-prefix: !Sub ${SysName}
          Essential: true
          PortMappings:
            - HostPort: 80
              Protocol: tcp
              ContainerPort: 80
          # Auto discovery setting
          DockerLabels:
              com.datadoghq.ad.check_names: "[\"apache\"]"
              com.datadoghq.ad.instances: "[{\"apache_status_url\":\"http://%%host%%/server-status?auto\"}]"
              com.datadoghq.ad.init_configs: "[{}]"
        - Name: datadog-agent
          Image: datadog/agent:latest
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-group: !Ref EcsLogGroupAPP
              awslogs-region: !Ref AWS::Region
              awslogs-stream-prefix: !Sub ${SysName}
          Cpu: 10
          MemoryReservation: 256
          Essential: false
          Environment:
            - Name: DD_API_KEY
              Value: !Ref DatadogApiKey
            - Name: DD_SITE
              Value: !Ref DatadogSite
            - Name: ECS_FARGATE
              Value: true

  EcsService:
    Type: AWS::ECS::Service
    DependsOn: Listener
    Properties:
      Cluster: !Ref EcsCluster
      LaunchType: FARGATE
      LoadBalancers:
        - TargetGroupArn: !Ref TargetGroup
          ContainerPort: 80
          ContainerName: app
      SchedulingStrategy: REPLICA
      DesiredCount: 1
      NetworkConfiguration:
       AwsvpcConfiguration:
           SecurityGroups:
             - !Ref EcsSecurityGroup
           Subnets:
             - !Ref SubnetProtectA
             - !Ref SubnetProtectC
      ServiceName: !Sub ${SysName}-${Env}-app
      TaskDefinition: !Ref EcsTaskDefinitionApp

上記CFnテンプレートで環境を構築することで、インテグレーションにFargateおよびApacheが追加されます。

▲ インテグレーション

こちらのインテグレーションにより、ECSインテグレーションだけでは取得できないFargateのメトリクス（ecs.fargate.*）が取得され、ダッシュボードも作成されます。

▲ Fargate ダッシュボード

ECS on EC2時同様、オートディスカバリの設定を行っていますので、コンテナ上で稼働しているアプリケーション（今回はApache）を自動で識別し、メトリクス（apache.*）が取得されます。

▲ Apache ダッシュボード

Datadog Agentのインストールにより、ライブコンテナ等も確認することが可能になります。

▲ ライブコンテナ

さいごに

Datadog Agentをインストールすることでメトリクスの解像度の向上や、追加設定などさまざまなメリットが得られます。

今回はログ収集など追加設定を行いませんでしたので、こちらのテンプレートを利用して検証を進めたいと思います。そちらについては、また別の機会にアウトプットしたいと思います。

参考

脚注

  1. インテグレーションの反映に時間を要することがあったので、事前に手動でインテグレーションしておくとよさそうです。 ↩

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