Select Amazon ECS and click on Get Started to start creating an ECS cluster and service. First, a container definition and a task definition are configured, and subsequently the service and cluster are configured to create the ECS objects cluster, service, task definition, and container definition. We shall discuss configuring each of the these in the following sub-sections. 

The Amazon ECS wizard gets started. A diagram of ECS objects gets displayed, as shown in Chapter 1, Getting Started with Amazon ECS and Amazon Fargate. By default, the Fargate launch type is used. First, the container definition is to be defined, followed by the task...

By default, one task is created. In this section, we shall discuss the procedure to add an additional task. The Tasks tab in the cluster displays the tasks associated with a cluster:

Tasks associated with a service are listed on the service page. To display a task definition's details, click on the link for the task definition in the Service page or the cluster page. A task definition is shown in the following screenshot:

• To run a new task, select Actions | Run Task. A new task gets created with Run Task:

• Two options are provided for the launch type to run a new task: Fargate and EC2. Select the Fargate launch type, as shown in the following screenshot.
• The Task Definition name is pre-specified. The Platform version is LATEST by default.
• The Cluster is also selected and, if more than one cluster is available, the cluster may be selected...

To be able to access a service, the Network Access should be configured with Auto-assign public IP as ENABLED, as shown in the following screenshot:

To provide network access, an ENI gets created for each task. The ENI is associated with a public IP that may be used to access an application running in a task container:

• Click on the link for a task in Service | Tasks, as shown in the following screenshot:

• On the task detail page, click on the link for the ENI Id, as shown in the following screenshot:

• Copy the IPv4 Public IP from the ENI console, 18.219.111.138 in the following screenshot, which would be different for different users:

• Specify the IPv4 Public IP in a browser to invoke the Hello World application, as shown in the following screenshot:

To delete a cluster, the cluster must not be running any tasks:

• Select all running tasks and click on Stop, as shown in the following screenshot. Alternatively, select Stop All, without selecting any tasks:

• In the Stop tasks confirmation dialog, click on Stop. The tasks get stopped, as indicated by the message Stopped tasks successfully.
• Click on Delete Cluster to delete the cluster:

• In the Delete Cluster confirmation dialog, click on Delete. The hello-world cluster gets deleted. If the CoudFormation stack associated with the cluster times out before the cluster gets deleted, an error message gets displayed, as shown in the following screenshot, and the cluster does not get deleted. If the CloudFormation stack does not get deleted automatically when the ECS cluster is chosen to be deleted, click on the View CloudFormation...

In this chapter, we introduced the Fargate launch type as used with an ECS cluster. We created a cluster, including container, task, and service definitions, using a Hello World Docker image. Subsequently, we invoked the Hello World application using the IPv4 public IP of the Elastic Network Interface associated with a task. Some of the container definition and task definition parameters are different for the Fargate launch type in comparison to the EC2 launch type, which is still available as an alternative with ECS. In the next chapter, we shall discuss integrating the CloudWatch Logs service with Fargate.