Datadog Agent for AWS ECS Clusters for Metrics

• Create an IAM Role for ECS Tasks
• Install Datadog Agent on ECS
• Collect Metrics

Create an IAM Role for ECS Tasks

Create an IAM role for the ECS tasks, so they can send data to Kloudfuse and interact with AWS services.

You can use the following policy to allow Datadog Agent to collect metrics, logs, and traces.

Navigate to IAM in the AWS Console, and create a new Role with the following specifications:

• Trusted entity: ECS (Elastic Container Service)
• Policy: Custom, or use AWS-managed policies:
  • AmazonEC2ContainerServiceforEC2Role, for ECS task communication
  • CloudWatchFullAccess, for metrics
  • AWSXRayDaemonWriteAccess, for tracing
  • logs policy, for CloudWatch logs access

Install Datadog Agent on ECS

Datadog provides a Docker image that runs as an agent inside the ECS containers. To use this image, configure ECS Task Definitions.

1. Create an ECS Task Definition with Datadog Agent.

Modify your ECS service’s task definition to run the Datadog agent as a sidecar container.

{
  "containerDefinitions": [
    {
      "name": "datadog-agent",
      "image": "public.ecr.aws/datadog/agent:latest",
      "cpu": 100,
      "memory": 512,
      "essential": true,
      "environment": [
        {
          "name": "DD_LOGS_ENABLED",
          "value": "true"
        },
        {
          "name": "DD_API_KEY",
          "value": "kloudfuse"
        },
        {
          "name": "DD_URL",
          "value": "https://<kf-domain-name>/ingester"
        },
        {
          "name": "DD_LOGS_CONFIG_CONTAINER_COLLECT_ALL",
          "value": "true"
        },
        {
          "name": "DD_LOGS_CONFIG_FORCE_USE_HTTP",
          "value": "true"
        },
        {
          "name": "DD_LOGS_CONFIG_LOGS_DD_URL",
          "value": "<kf-domain-name>:443"
        }
      ],
      "mountPoints": [
        {
          "sourceVolume": "docker_sock",
          "containerPath": "/var/run/docker.sock"
        },
        {
          "sourceVolume": "cgroup",
          "containerPath": "/host/sys/fs/cgroup"
        },
        {
          "sourceVolume": "proc",
          "containerPath": "/host/proc"
        },
        {
          "sourceVolume": "pointdir",
          "containerPath": "/opt/datadog-agent/run",
          "readOnly": false
        },
        {
          "sourceVolume": "containers_root",
          "containerPath": "/var/lib/docker/containers",
          "readOnly": true
        }
      ],
      "linuxParameters": {
        "initProcessEnabled": true
      }
    }
  ],
  "family": "datadog-agent-task",
  "taskRoleArn": "arn:aws:iam::<aws-account-id>:role/<custom-ecs-iam-role>",
  "executionRoleArn": "arn:aws:iam::<aws-account-id>:role/<custom-ecs-iam-role>",
  "placementConstraints": [],
  "compatibilities": ["EXTERNAL", "EC2"],
  "tags": []
}

Collect Metrics

Metric collection includes data related to CPU, memory, disk, network, and other container performance metrics. Datadog automatically collects ECS-specific metrics, such as ECS task CPU usage, memory utilization.

The ECS Agent collects metrics with minimal configuration.