Updating a task definition using the console - Amazon Elastic Container Service
JSON validation
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Updating a task definition using the console

A task definition revision is a copy of the current task definition with the new parameter values replacing the existing ones. All parameters that you do not modify are in the new revision.

To update a task definition, create a task definition revision. If the task definition is used in a service, you must update that service to use the updated task definition.

When you create a revision, you can modify the following container properties and environment properties.

  • Container image URI

  • Port mappings

  • Environment variables

  • Task size

  • Container size

  • Task role

  • Task execution role

  • Volumes and container mount points

  • Private registry

JSON validation

The Amazon ECS console JSON editor validates the following in the JSON file:

  • The file is a valid JSON file

  • The file does not contain any extraneous keys

  • The file contains the familyName parameter

  • There is at least one entry under containerDefinitions

Amazon ECS console

  1. Open the console at https://console.amazonaws.cn/ecs/v2.

  2. From the navigation bar, choose the Region that contains your task definition.

  3. In the navigation pane, choose Task definitions.

  4. Choose the task definition.

  5. Select the task definition revision, and then choose Create new revision, Create new revision.

  6. On the Create new task definition revision page, make changes. For example, to change the existing container definitions (such as the container image, memory limits, or port mappings), select the container, and then make the changes.

  7. Verify the information, and then choose Update.

  8. If your task definition is used in a service, update your service with the updated task definition. For more information, see Updating a service using the console.

Amazon ECS console JSON editor

  1. Open the console at https://console.amazonaws.cn/ecs/v2.

  2. In the navigation pane, choose Task definitions.

  3. Choose Create new revision, Create new revision with JSON.

  4. In the JSON editor box, edit your JSON file,

    The JSON must pass the validation checks specified in JSON validation.

  5. Choose Create.