Criar recursos do Amazon ECS usando comandos da AWS CLI para o AWS CloudFormation

Usando um editor de texto qualquer, crie um arquivo chamado ecs-tutorial-template.yaml.

No arquivo ecs-tutorial-template.yaml, cole o modelo a seguir e salve as alterações.

AWSTemplateFormatVersion: 2010-09-09
Description: A template that deploys an application that is built on an Apache web server Docker image by creating an Amazon ECS cluster, task definition, and service. The template also creates networking and logging resources, and an Amazon ECS task execution role.
Parameters:
  ClusterName:
    Type: String
    Default: CFNCluster
    Description: Name of the ECS Cluster
  TaskFamily:
    Type: String
    Default: task-definition-cfn
    Description: Family name for the Task Definition
  ServiceName:
    Type: String
    Default: cfn-service
    Description: Name of the ECS Service
  ContainerImage:
    Type: String
    Default: public.ecr.aws/docker/library/httpd:2.4
    Description: Container image to use for the task
  TaskCpu:
    Type: Number
    Default: 256
    AllowedValues: [256, 512, 1024, 2048, 4096]
    Description: CPU units for the task
  TaskMemory:
    Type: Number
    Default: 512
    AllowedValues: [512, 1024, 2048, 4096, 8192, 16384]
    Description: Memory (in MiB) for the task
  DesiredCount:
    Type: Number
    Default: 1
    Description: Desired number of tasks to run
  LogGroupName:
    Type: String
    Default: /ecs/fargate-task-definition
    Description: CloudWatch Log Group name
  VpcCidr:
    Type: String
    Default: 10.0.0.0/16
    Description: CIDR block for the VPC
  PublicSubnet1Cidr:
    Type: String
    Default: 10.0.0.0/24
    Description: CIDR block for public subnet 1
  PublicSubnet2Cidr:
    Type: String
    Default: 10.0.1.0/24
    Description: CIDR block for public subnet 2
Resources:
  # VPC and Networking Resources
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: !Ref VpcCidr
      EnableDnsSupport: true
      EnableDnsHostnames: true
      Tags:
        - Key: Name
          Value: !Sub ${AWS::StackName}-VPC
  InternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Sub ${AWS::StackName}-IGW
  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 ${AWS::StackName}-PublicSubnet1
  PublicSubnet2:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref VPC
      AvailabilityZone: !Select [1, !GetAZs '']
      CidrBlock: !Ref PublicSubnet2Cidr
      MapPublicIpOnLaunch: true
      Tags:
        - Key: Name
          Value: !Sub ${AWS::StackName}-PublicSubnet2
  PublicRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
        - Key: Name
          Value: !Sub ${AWS::StackName}-PublicRouteTable
  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
  # Security Group
  ECSSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Security group for ECS tasks
      VpcId: !Ref VPC
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
        - IpProtocol: tcp
          FromPort: 443
          ToPort: 443
          CidrIp: 0.0.0.0/0
  # IAM Roles
  ECSTaskExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      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 Logs
  TaskLogGroup:
    Type: AWS::Logs::LogGroup
    DeletionPolicy: Retain
    UpdateReplacePolicy: Retain
    Properties:
      LogGroupName: !Ref LogGroupName
      RetentionInDays: 30
  # ECS Resources
  ECSCluster:
    Type: AWS::ECS::Cluster
    Properties:
      ClusterName: !Ref ClusterName
  ECSTaskDefinition:
    Type: AWS::ECS::TaskDefinition
    Properties:
      ContainerDefinitions:
        - Command:
            - >-
              /bin/sh -c "echo '<html> <head> <title>Amazon ECS Sample
              App</title> <style>body {margin-top: 40px; background-color:
              #333;} </style> </head><body> <div
              style=color:white;text-align:center> <h1>Amazon ECS Sample
              App</h1> <h2>Congratulations!</h2> <p>Your application is now
              running on a container in Amazon ECS.</p> </div></body></html>' > 
              /usr/local/apache2/htdocs/index.html && httpd-foreground"s
          EntryPoint:
            - sh
            - '-c'
          Essential: true
          Image: !Ref ContainerImage
          LogConfiguration:
            LogDriver: awslogs
            Options:
              mode: non-blocking
              max-buffer-size: 25m
              awslogs-create-group: 'true'
              awslogs-group: !Ref LogGroupName
              awslogs-region: !Ref 'AWS::Region'
              awslogs-stream-prefix: ecs
          Name: sample-fargate-app
          PortMappings:
            - ContainerPort: 80
              HostPort: 80
              Protocol: tcp
      Cpu: !Ref TaskCpu
      ExecutionRoleArn: !GetAtt ECSTaskExecutionRole.Arn
      Family: !Ref TaskFamily
      Memory: !Ref TaskMemory
      NetworkMode: awsvpc
      RequiresCompatibilities:
        - FARGATE
      RuntimePlatform:
        OperatingSystemFamily: LINUX
  ECSService:
    Type: AWS::ECS::Service
    DependsOn: 
      - PublicSubnet1RouteTableAssociation
      - PublicSubnet2RouteTableAssociation
    Properties:
      ServiceName: !Ref ServiceName
      Cluster: !Ref ECSCluster
      DesiredCount: !Ref DesiredCount
      LaunchType: FARGATE
      NetworkConfiguration:
        AwsvpcConfiguration:
          AssignPublicIp: ENABLED
          SecurityGroups:
            - !Ref ECSSecurityGroup
          Subnets:
            - !Ref PublicSubnet1
            - !Ref PublicSubnet2
      TaskDefinition: !Ref ECSTaskDefinition
Outputs:
  ClusterName:
    Description: The name of the ECS cluster
    Value: !Ref ECSCluster    
  TaskDefinitionArn:
    Description: The ARN of the task definition
    Value: !Ref ECSTaskDefinition  
  ServiceName:
    Description: The name of the ECS service
    Value: !Ref ECSService  
  VpcId:
    Description: The ID of the VPC
    Value: !Ref VPC
  PublicSubnet1:
    Description: The ID of public subnet 1
    Value: !Ref PublicSubnet1 
  PublicSubnet2:
    Description: The ID of public subnet 2
    Value: !Ref PublicSubnet2
  SecurityGroup:
    Description: The ID of the security group
    Value: !Ref ECSSecurityGroup
  ExecutionRoleArn:
    Description: The ARN of the task execution role
    Value: !GetAtt ECSTaskExecutionRole.Arn

Depois de criar um arquivo de modelo, use o comando a seguir para criar uma pilha. O sinalizador --capabilities é necessário para criar um perfil de execução de tarefa do Amazon ECS, conforme especificado no modelo. Você também pode especificar o sinalizador --parameters para personalizar os parâmetros do modelo.

aws cloudformation create-stack \
      --stack-name ecs-stack \
      --template-body file://ecs-tutorial-template.yaml \
      --capabilities CAPABILITY_IAM

Execute o comando a seguir para listar todas as definições de tarefa em uma Região da AWS.

aws ecs list-task-definitions

O comando retorna uma lista de nomes do recurso da Amazon (ARN) de definições de tarefas. O ARN da definição de tarefa que você criou usando o modelo será exibido no formato a seguir.

{
    "taskDefinitionArns": [
     .....
        "arn:aws:ecs:aws-region:111122223333:task-definition/task-definition-cfn:1",
     .....   
    ]
}

Execute o comando a seguir para listar todos os clusters em uma Região da AWS.

aws ecs list-clusters

O comando retorna uma lista de ARNs de cluster. O ARN do cluster que você criou usando o modelo será exibido no formato a seguir.

{
    "clusterArns": [
        .....
        "arn:aws:ecs:aws-region:111122223333:cluster/CFNCluster",
        .....
    ]
}

Execute o comando a seguir para listar todos os serviços em execução no cluster CFNCluster.

aws ecs list-services \
      --cluster CFNCluster

O comando retorna uma lista de ARNs de serviço. O ARN do serviço que você criou usando o modelo será exibido no formato a seguir.

{
    "serviceArns": [
        "arn:aws:ecs:aws-region:111122223333:service/CFNCluster/cfn-service"
    ]
}