AWS FargateでFireLens（Fluent Bit）を最小構成で起動し、ECS ExecでFireLensコンテナに入ってみる

AWSTemplateFormatVersion: "2010-09-09"
Description: Create Fargate*1, Firelens*1

Metadata:
  AWS::CloudFormation::Interface:
    ParameterGroups:
      - Label:
          default: Common Settings
        Parameters:
          - ProjectName
          - Environment
      - Label:
          default: ECS VPC Settings
        Parameters:
          - VPCID
          - PublicSubnet1
          - PublicSubnet2

Parameters:
  ProjectName:
    Description: Project Name
    Type: String
    Default: unnamed
  Environment:
    Description: Environment
    Type: String
    Default: dev
    AllowedValues:
      - prod
      - dev
      - stg
      - test
  VPCID:
    Type: AWS::EC2::VPC::Id
  PublicSubnet1:
    Description: "Web App Subnet 1st"
    Type: AWS::EC2::Subnet::Id
  PublicSubnet2:
    Description: "Web App Subnet 2nd"
    Type: AWS::EC2::Subnet::Id
  DesiredCount:
    Type: Number
    Default: 1
  ClusterName:
    Type: String
    Default: cluster
  AppName:
    Type: String
    Default: webapp
  ServiceName:
    Type: String
    Default: service
  TaskDefinitionName:
    Type: String
    Default: taskdef
  ImageNameWebApp:
    Description: "Web Application Repository Name also Need to TagName"
    Type: String
    Default: "public.ecr.aws/nginx/nginx:latest"
  ImageNameFirelens:
    Description: "Firelens Repository Name also Need to TagName"
    Type: String
    Default: "public.ecr.aws/aws-observability/aws-for-fluent-bit:latest"

Resources:
  # --------------------------------------------
  # ECS Fargate
  # --------------------------------------------
  # Cluster
  ECSCluster:
    Type: "AWS::ECS::Cluster"
    Properties:
      ClusterName: !Sub "${ProjectName}-${Environment}-${ClusterName}"
      CapacityProviders:
        - "FARGATE_SPOT"
        - "FARGATE"

  ECSLogGroup:
    Type: "AWS::Logs::LogGroup"
    Properties:
      LogGroupName: !Sub "/ecs/logs/${ProjectName}-${Environment}-${TaskDefinitionName}"
  # Service
  ECSService:
    Type: "AWS::ECS::Service"
    Properties:
      ServiceName: !Sub ${ProjectName}-${Environment}-${ServiceName}
      Cluster: !Ref ECSCluster
      LaunchType: "FARGATE"
      PlatformVersion: "1.4.0"
      DesiredCount: !Ref DesiredCount
      DeploymentConfiguration:
        MaximumPercent: 200
        MinimumHealthyPercent: 100
        DeploymentCircuitBreaker:
          Enable: false
          Rollback: false
      NetworkConfiguration:
        AwsvpcConfiguration:
          AssignPublicIp: "ENABLED"
          SecurityGroups:
            - !Ref SecurityGroup1
          Subnets:
            - !Ref PublicSubnet1
            - !Ref PublicSubnet2
      TaskDefinition: !Ref ECSTaskDefinition
  # ECS TaskDefinition
  ECSTaskDefinition:
    Type: "AWS::ECS::TaskDefinition"
    Properties:
      Family: !Sub "${ProjectName}-${Environment}-${AppName}-${TaskDefinitionName}"
      TaskRoleArn: !GetAtt ECSTaskRole1.Arn
      ExecutionRoleArn: !GetAtt ECSTaskExecutionRole1.Arn
      NetworkMode: "awsvpc"
      RequiresCompatibilities:
        - "FARGATE"
      Cpu: "256"
      Memory: "512"
      ContainerDefinitions:
        - Essential: true
          Image: !Ref ImageNameWebApp
          LogConfiguration:
            LogDriver: "awsfirelens"
            Options:
              Name: "stdout"
          Name: !Ref AppName
          PortMappings:
            - ContainerPort: 80
              HostPort: 80
              Protocol: "tcp"
        - Essential: true
          FirelensConfiguration:
            Type: "fluentbit"
          Image: !Ref ImageNameFirelens
          LogConfiguration:
            LogDriver: "awslogs"
            Options:
              awslogs-group: !Ref ECSLogGroup
              awslogs-region: !Ref AWS::Region
              awslogs-stream-prefix: "firelens"
          Name: "log_router"
          User: "0"

  # --------------------------------------------
  # Security Group
  # --------------------------------------------
  # Security Group for WebApp
  SecurityGroup1:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupName: !Sub ${ProjectName}-${Environment}-${AppName}-sg
      GroupDescription: Web App Security Group
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: "0.0.0.0/0"
          Description: "Access from Public"
      VpcId: !Ref VPCID
      Tags:
        - Key: Name
          Value: !Sub ${ProjectName}-${Environment}-${AppName}-sg

  # --------------------------------------------
  # IAM Role
  # --------------------------------------------
  # ECS Task Execution Role
  ECSTaskExecutionRole1:
    Type: "AWS::IAM::Role"
    Properties:
      RoleName: !Sub ${ProjectName}-${Environment}-${AppName}-ECSTaskExecutionRole
      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
  # ECS Task Role
  ECSTaskRole1:
    Type: "AWS::IAM::Role"
    Properties:
      Path: "/"
      RoleName: !Sub ${ProjectName}-${Environment}-${AppName}-ECSTaskRole
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - !Ref ECSExecPolicy

  # --------------------------------------------
  # IAM Policy
  # --------------------------------------------
  # Allowed ECS Exec
  ECSExecPolicy:
    Type: "AWS::IAM::ManagedPolicy"
    Properties:
      ManagedPolicyName: !Sub "${ProjectName}-${Environment}-ECSExecPolicy"
      Path: "/"
      PolicyDocument: |
        {
          "Version": "2012-10-17",
          "Statement": [
            {
              "Effect": "Allow",
              "Action": [
                "ssmmessages:CreateControlChannel",
                "ssmmessages:CreateDataChannel",
                "ssmmessages:OpenControlChannel",
                "ssmmessages:OpenDataChannel"
              ],
              "Resource": "*"
            }
          ]
        }

{
  "ipcMode": null,
  "executionRoleArn": "arn:aws:iam::123456789012:role/minimum-test-webapp-ECSTaskExecutionRole",
  "containerDefinitions": [
    {
      "dnsSearchDomains": [],
      "environmentFiles": [],
      "logConfiguration": {
        "logDriver": "awsfirelens",
        "secretOptions": [],
        "options": {
          "Name": "stdout"
        }
      },
      "entryPoint": [],
      "portMappings": [
        {
          "hostPort": 80,
          "protocol": "tcp",
          "containerPort": 80
        }
      ],
      "command": [],
      "linuxParameters": null,
      "cpu": 0,
      "environment": [],
      "resourceRequirements": null,
      "ulimits": [],
      "dnsServers": [],
      "mountPoints": [],
      "workingDirectory": null,
      "secrets": [],
      "dockerSecurityOptions": [],
      "memory": null,
      "memoryReservation": null,
      "volumesFrom": [],
      "stopTimeout": null,
      "image": "public.ecr.aws/nginx/nginx:latest",
      "startTimeout": null,
      "firelensConfiguration": null,
      "dependsOn": null,
      "disableNetworking": null,
      "interactive": null,
      "healthCheck": null,
      "essential": true,
      "links": [],
      "hostname": null,
      "extraHosts": [],
      "pseudoTerminal": null,
      "user": null,
      "readonlyRootFilesystem": null,
      "dockerLabels": {},
      "systemControls": [],
      "privileged": null,
      "name": "webapp"
    },
    {
      "dnsSearchDomains": [],
      "environmentFiles": [],
      "logConfiguration": {
        "logDriver": "awslogs",
        "secretOptions": [],
        "options": {
          "awslogs-group": "/ecs/logs/minimum-test-taskdef",
          "awslogs-region": "ap-northeast-1",
          "awslogs-stream-prefix": "firelens"
        }
      },
      "entryPoint": [],
      "portMappings": [],
      "command": [],
      "linuxParameters": null,
      "cpu": 0,
      "environment": [],
      "resourceRequirements": null,
      "ulimits": [],
      "dnsServers": [],
      "mountPoints": [],
      "workingDirectory": null,
      "secrets": [],
      "dockerSecurityOptions": [],
      "memory": null,
      "memoryReservation": null,
      "volumesFrom": [],
      "stopTimeout": null,
      "image": "public.ecr.aws/aws-observability/aws-for-fluent-bit:latest",
      "startTimeout": null,
      "firelensConfiguration": {
        "type": "fluentbit",
        "options": {}
      },
      "dependsOn": null,
      "disableNetworking": null,
      "interactive": null,
      "healthCheck": null,
      "essential": true,
      "links": [],
      "hostname": null,
      "extraHosts": [],
      "pseudoTerminal": null,
      "user": "0",
      "readonlyRootFilesystem": null,
      "dockerLabels": {},
      "systemControls": [],
      "privileged": null,
      "name": "log_router"
    }
  ],
  "placementConstraints": [],
  "memory": "512",
  "taskRoleArn": "arn:aws:iam::123456789012:role/minimum-test-webapp-ECSTaskRole",
  "compatibilities": [
    "EC2",
    "FARGATE"
  ],
  "taskDefinitionArn": "arn:aws:ecs:ap-northeast-1:123456789012:task-definition/minimum-test-webapp-taskdef:1",
  "family": "minimum-test-webapp-taskdef",
  "requiresAttributes": [
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "com.amazonaws.ecs.capability.logging-driver.awslogs"
    },
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "ecs.capability.execution-role-awslogs"
    },
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "com.amazonaws.ecs.capability.docker-remote-api.1.19"
    },
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "ecs.capability.firelens.fluentbit"
    },
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "com.amazonaws.ecs.capability.docker-remote-api.1.17"
    },
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "com.amazonaws.ecs.capability.logging-driver.awsfirelens"
    },
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "com.amazonaws.ecs.capability.task-iam-role"
    },
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "com.amazonaws.ecs.capability.docker-remote-api.1.18"
    },
    {
      "targetId": null,
      "targetType": null,
      "value": null,
      "name": "ecs.capability.task-eni"
    }
  ],
  "pidMode": null,
  "requiresCompatibilities": [
    "FARGATE"
  ],
  "networkMode": "awsvpc",
  "cpu": "256",
  "revision": 1,
  "status": "ACTIVE",
  "inferenceAccelerators": null,
  "proxyConfiguration": null,
  "volumes": []
}