medium2_ecs.yaml

AWSTemplateFormatVersion: '2010-09-09'
Parameters:
  vpcId:
    Type: AWS::EC2::VPC::Id
  subnet:
    Type: AWS::EC2::Subnet::Id
  zone:
    Type: AWS::Route53::HostedZone::Id
Resources:
  lb:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Subnets:
        - !Ref subnet
  tg:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      Port: 80
      Protocol: HTTP
      VpcId: !Ref vpcId
  http:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      LoadBalancerArn: !Ref lb
      DefaultActions:
        - Type: forward
          TargetGroupArn: !Ref tg
      Port: 80
      Protocol: HTTP
  td:
    Type: AWS::ECS::TaskDefinition
    Properties:
      ContainerDefinitions:
        - Name: nginx
          Image: nginx:latest
          PortMappings:
            - ContainerPort: 80
              HostPort: 80
  cluster:
    Type: AWS::ECS::Cluster
    Properties:
      ClusterName: cluster
  ecs:
    Type: AWS::ECS::Service
    Properties:
      Cluster: !Ref cluster
      DesiredCount: 1
      TaskDefinition: !Ref td
      ServiceName: service
      LoadBalancers:
        - ContainerName: nginx
          ContainerPort: 80
          LoadBalancerName: !Ref lb
  lc:
    Type: AWS::AutoScaling::LaunchConfiguration
    Properties:
      # us-east-1 ecs-optimized: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-optimized_AMI.html
      ImageId: ami-045f1b3f87ed83659
      InstanceType: t3.nano
      UserData:
        !Base64
          "Fn::Sub": |
            #!/bin/bash
            echo ECS_CLUSTER=cluster >> /etc/ecs/ecs.config
  ag:
    Type: AWS::AutoScaling::AutoScalingGroup
    Properties:
      DesiredCapacity: 1
      LaunchConfigurationName: !Ref lc
    DependsOn:
      - cluster
  cname:
    Type: AWS::Route53::RecordSet
    Properties:
      Name: yourapp
      Type: "CNAME"
      HostedZoneId: !Ref zone
      ResourceRecords:
        - !Ref lb