Step 4: Create a Task Definition for an Application

You enabled ECS cluster creation when you created the Infrastructure. In order to create a Service using ECS, you first need to create a Task Definition that serves as a blueprint for your application.

Once you create a Task Definition, you can run it as a Task or as a Service. In this tutorial, we run the Task Definition as a Service.

Estimated time to complete Step 4: 10 minutes.

Prerequisites

Before creating an RDS, verify that you completed the tasks in the previous tutorial steps. Using the DuploCloud Portal, confirm that:

• An Infrastructure and Plan exist, both named NONPROD.

• The NONPROD infrastructure has ECS Enabled.

• A Tenant named dev01 has been created.

Creating a Task Definition

1. In the Tenant list box, select the dev01 Tenant.

2. Navigate to Cloud Services -> ECS.

3. In the Task Definition tab, click Add. The Add Task Definition page displays.

1. In the Name field, enter sample-task-def.

2. In the Container - 1 section, in the Container Name field, enter sample-task-def-c1. Container names are required for Docker images in AWS ECS.

3. In the Image field, enter duplocloud/nodejs-hello:latest.

4. From the vCPU list box, select 0.50 vCPU.

5. From the Memory list box, select 1 GB.

6. In the Port Mappings section, in the Port field, enter 3000. Port mappings allow containers to access ports for the host container instance to send or receive traffic.

7. Click Submit.