cfnTask.template

  taskdefinition: 
    Type: "AWS::ECS::TaskDefinition"
    Properties: 
      ContainerDefinitions: 
        - 
          Name: "datadog-agent"
          MountPoints: 
            - 
              SourceVolume: "docker_sock"
              ContainerPath: "/var/run/docker.sock"
            - 
              SourceVolume: "cgroup"
              ContainerPath: "/host/sys/fs/cgroup"
            - 
              SourceVolume: "proc"
              ContainerPath: "/host/proc"
          Image: "datadog/agent:latest"
          Cpu: "10"
          Memory: "256"
          Essential: "true"
          Environment:
            -
              Name: DD_API_KEY
              Value: !Ref DDAPIKEY
            -
              Name: SD_BACKEND
              Value: docker 
      Volumes: 
        - 
          Host: 
            SourcePath: "/var/run/docker.sock"
          Name: "docker_sock"
        - 
          Host: 
            SourcePath: "/proc/"
          Name: "proc"
        - 
          Host: 
            SourcePath: "/cgroup/"
          Name: "cgroup"
      Family: datadog-agent-task

      UserData:
        Fn::Base64: !Sub |
          #!/bin/bash
          yum install -y python-pip
          pip-2.6 install awscli
          yum install -y aws-cfn-bootstrap aws-cli jq
          vgextend docker /dev/xvdcy
          lvextend -L+100G /dev/docker/docker-pool
          /opt/aws/bin/cfn-init -v --region ${AWS::Region} --stack ${AWS::StackName} --resource ECSLaunchConfiguration
          /opt/aws/bin/cfn-signal -e 0 --region ${AWS::Region} --stack ${AWS::StackName} --resource ECSAutoScalingGroup
          cluster=${ECSCluster}
          task_def="datadog-agent-task"
          touch /etc/ecs/ecs.config
          echo ECS_CLUSTER=$cluster >> /etc/ecs/ecs.config
          echo ECS_ENABLE_CONTAINER_METADATA=true >> /etc/ecs/ecs.config
          start ecs
          instance_arn=$( curl -f http://localhost:51678/v1/metadata | jq -re .ContainerInstanceArn | awk -F/ '{print $NF}')
          az=$(curl -f http://169.254.169.254/latest/meta-data/placement/availability-zone)
          region=$(curl http://169.254.169.254/latest/dynamic/instance-identity/document|grep region|awk -F\" '{print $4}')
          echo "cluster=$cluster az=$az region=$region aws ecs start-task --cluster \
          $cluster --task-definition $task_def --container-instances $instance_arn --region $region" >> /etc/rc.local