awsms-poc-ecs-cluster.yml

AWSTemplateFormatVersion: '2010-09-09'
Description: Launches ECS cluster

Parameters:
  EnvironmentName:
    Type: String
    Description: "Environment Name"
    AllowedValues:
      - sandbox
      - development
      - staging
    Default: sandbox

Resources:
  # Create ECS Cluster
  ECSCluster:
    Type: AWS::ECS::Cluster
    Properties:
      ClusterName: !Sub ${EnvironmentName}-awsms-cluster
  ContainerSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Access to the Fargate containers
      #VpcId: !Ref 'VPC'
      VpcId:
        Fn::ImportValue: !Sub ${EnvironmentName}:VpcId
  
  # IAM Roles for ECS
  AutoscalingRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Statement:
        - Effect: Allow
          Principal:
            Service: [application-autoscaling.amazonaws.com]
          Action: ['sts:AssumeRole']
      Path: /
      Policies:
      - PolicyName: service-autoscaling
        PolicyDocument:
          Statement:
          - Effect: Allow
            Action:
              - 'application-autoscaling:*'
              - 'cloudwatch:DescribeAlarms'
              - 'cloudwatch:PutMetricAlarm'
              - 'ecs:DescribeServices'
              - 'ecs:UpdateService'
            Resource: '*'
  ECSRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Statement:
        - Effect: Allow
          Principal:
            Service: [ecs.amazonaws.com]
          Action: ['sts:AssumeRole']
      Path: /
      Policies:
      - PolicyName: ecs-service
        PolicyDocument:
          Statement:
          - Effect: Allow
            Action:
              
              - 'ec2:AttachNetworkInterface'
              - 'ec2:CreateNetworkInterface'
              - 'ec2:CreateNetworkInterfacePermission'
              - 'ec2:DeleteNetworkInterface'
              - 'ec2:DeleteNetworkInterfacePermission'
              - 'ec2:Describe*'
              - 'ec2:DetachNetworkInterface'
              - 'elasticloadbalancing:DeregisterInstancesFromLoadBalancer'
              - 'elasticloadbalancing:DeregisterTargets'
              - 'elasticloadbalancing:Describe*'
              - 'elasticloadbalancing:RegisterInstancesWithLoadBalancer'
              - 'elasticloadbalancing:RegisterTargets'
            Resource: '*'  
  ECSTaskExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Statement:
        - Effect: Allow
          Principal:
            Service: [ecs-tasks.amazonaws.com]
          Action: ['sts:AssumeRole']
      Path: /
      Policies:
        - PolicyName: AmazonECSTaskExecutionRolePolicy
          PolicyDocument:
            Statement:
            - Effect: Allow
              Action:                
                - 'ecr:GetAuthorizationToken'
                - 'ecr:BatchCheckLayerAvailability'
                - 'ecr:GetDownloadUrlForLayer'
                - 'ecr:BatchGetImage'
                - 'logs:CreateLogStream'
                - 'logs:PutLogEvents'
              Resource: '*'
 
Outputs:
  ClusterName:
    Description: The name of the ECS cluster
    Value: !Ref 'ECSCluster'
    Export:
      Name: !Sub ${EnvironmentName}:ClusterName
  AutoscalingRole:
    Description: The ARN of the role used for autoscaling
    Value: !GetAtt 'AutoscalingRole.Arn'
    Export:
      Name: !Sub ${EnvironmentName}:AutoscalingRole
  ECSRole:
    Description: The ARN of the ECS role
    Value: !GetAtt 'ECSRole.Arn'
    Export:
      Name: !Sub ${EnvironmentName}:ECSRole
  ECSTaskExecutionRole:
    Description: The ARN of the ECS role
    Value: !GetAtt 'ECSTaskExecutionRole.Arn'
    Export:
      Name: !Sub ${EnvironmentName}:ECSTaskExecutionRole
  ContainerSecurityGroup:
    Description: A security group used to allow Fargate containers to receive traffic
    Value: !Ref 'ContainerSecurityGroup'
    Export:
      Name: !Sub ${EnvironmentName}:ContainerSecurityGroup