Learn how to create an Amazon ECS Linux task for the Fargate launch type - Amazon Elastic Container Service

Learn how to create an Amazon ECS Linux task for the Fargate launch type

Amazon Elastic Container Service (Amazon ECS) is a highly scalable, fast, container management service that makes it easy to run, stop, and manage your containers. You can host your containers on a serverless infrastructure that is managed by Amazon ECS by launching your services or tasks on AWS Fargate. For more information on Fargate, see AWS Fargate for Amazon ECS.

Get started with Amazon ECS on AWS Fargate by using the Fargate launch type for your tasks in the Regions where Amazon ECS supports AWS Fargate.

Complete the following steps to get started with Amazon ECS on AWS Fargate.

Prerequisites

Before you begin, complete the steps in Set up to use Amazon ECS and that your AWS user has the permissions specified in the AdministratorAccess IAM policy example.

The console attempts to automatically create the task execution IAM role, which is required for Fargate tasks. To ensure that the console is able to create this IAM role, one of the following must be true:

Important

The security group you select when creating a service with your task definition must have port 80 open for inbound traffic. Add the following inbound rule to your security group. For information about how to create a security group, see Add rules to your security group in the Amazon EC2 User Guide.

  • Type: HTTP

  • Protocol: TCP

  • Port range: 80

  • Source: Anywhere (0.0.0.0/0)

Step 1: Create the cluster

Create a cluster that uses the default VPC.

Before you begin, assign the appropriate IAM permission. For more information, see Amazon ECS cluster examples.

  1. Open the console at https://console.aws.amazon.com/ecs/v2.

  2. From the navigation bar, select the Region to use.

  3. In the navigation pane, choose Clusters.

  4. On the Clusters page, choose Create cluster.

  5. Under Cluster configuration, for Cluster name, enter a unique name.

    The name can contain up to 255 letters (uppercase and lowercase), numbers, and hyphens.

  6. (Optional) To turn on Container Insights, expand Monitoring, and then turn on Use Container Insights.

  7. (Optional) To help identify your cluster, expand Tags, and then configure your tags.

    [Add a tag] Choose Add tag and do the following:

    • For Key, enter the key name.

    • For Value, enter the key value.

    [Remove a tag] Choose Remove to the right of the tag’s Key and Value.

  8. Choose Create.

Step 2: Create a task definition

A task definition is like a blueprint for your application. Each time you launch a task in Amazon ECS, you specify a task definition. The service then knows which Docker image to use for containers, how many containers to use in the task, and the resource allocation for each container.

  1. In the navigation pane, choose Task Definitions.

  2. Choose Create new Task Definition, Create new revision with JSON.

  3. Copy and paste the following example task definition into the box and then choose Save.

    { "family": "sample-fargate", "networkMode": "awsvpc", "containerDefinitions": [ { "name": "fargate-app", "image": "public.ecr.aws/docker/library/httpd:latest", "portMappings": [ { "containerPort": 80, "hostPort": 80, "protocol": "tcp" } ], "essential": true, "entryPoint": [ "sh", "-c" ], "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\"" ] } ], "requiresCompatibilities": [ "FARGATE" ], "cpu": "256", "memory": "512" }
  4. Choose Create.

Step 3: Create the service

Create a service using the task definition.

  1. In the navigation pane, choose Clusters, and then select the cluster you created in Step 1: Create the cluster.

  2. From the Services tab, choose Create.

  3. Under Deployment configuration, specify how your application is deployed.

    1. For Task definition, choose the task definition you created in Step 2: Create a task definition.

    2. For Service name, enter a name for your service.

    3. For Desired tasks, enter 1.

  4. Under Networking, you can create a new security group or choose an existing security group for your task. Ensure that the security group you use has the inbound rule listed under Prerequisites.

  5. Choose Create.

Step 4: View your service

  1. Open the console at https://console.aws.amazon.com/ecs/v2.

  2. In the navigation pane, choose Clusters.

  3. Choose the cluster where you ran the service.

  4. In the Services tab, under Service name, choose the service you created in Step 3: Create the service.

  5. Choose the Tasks tab, and then choose the task in your service.

  6. On the task page, in the Configuration section, under Public IP, choose Open address.

Step 5: Clean up

When you are finished using an Amazon ECS cluster, you should clean up the resources associated with it to avoid incurring charges for resources that you are not using.

Some Amazon ECS resources, such as tasks, services, clusters, and container instances, are cleaned up using the Amazon ECS console. Other resources, such as Amazon EC2 instances, Elastic Load Balancing load balancers, and Auto Scaling groups, must be cleaned up manually in the Amazon EC2 console or by deleting the AWS CloudFormation stack that created them.

  1. In the navigation pane, choose Clusters.

  2. On the Clusters page, select the cluster you created for this tutorial.

  3. Choose the Services tab.

  4. Select the service, and then choose Delete.

  5. At the confirmation prompt, enter delete and then choose Delete. Alternatively, you can use the Force delete option to have Amazon ECS scale the service down on your behalf before deleting it.

    Wait until the service is deleted.

  6. Choose Delete Cluster. At the confirmation prompt, enter delete cluster-name, and then choose Delete. Deleting the cluster cleans up the associated resources that were created with the cluster, including Auto Scaling groups, VPCs, or load balancers.