Deregistering an Amazon ECS task definition revision using the console
You can deregister the task definition revision so that it no longer displays in your
ListTaskDefinition API calls or in the console when you want to run a task
or update a service.
When you deregister a task definition revision, it is immediately marked as
INACTIVE. Existing tasks and services that reference an
INACTIVE task definition revision continue to run without disruption.
Existing services that reference an INACTIVE task definition revision can still
scale up or down by modifying the service's desired count.
You can't use an INACTIVE task definition revision to run new tasks or create
new services. You also can't update an existing service to reference an
INACTIVE task definition revision (even though there may be up to a
10-minute window following deregistration where these restrictions have not yet taken
effect).
Note
When you deregister all revisions in a task family, the task definition family is
moved to the INACTIVE list. Adding a new revision of an
INACTIVE task definition moves the task definition family back to the
ACTIVE list.
At this time, INACTIVE task definition revisions remain discoverable in
your account indefinitely. However, this behavior is subject to change in the future.
Therefore, you should not rely on INACTIVE task definition revisions
persisting beyond the lifecycle of any associated tasks and services.
AWS CloudFormation stacks
The following behavior applies to task definitions that were created in the new Amazon ECS console before January 12, 2023.
When you create a task definition, the Amazon ECS console automatically creates a CloudFormation
stack that has a name that begins with ECS-Console-V2-TaskDefinition-. If you used the
AWS CLI or an AWS SDK to deregister the task definition, then you must manually delete the task
definition stack. For more information, see Deleting a
stack in the AWS CloudFormation User Guide.
Task definitions created after January 12, 2023, do not have a CloudFormation stack automatically created for them.
Procedure
To deregister a new task definition (Amazon ECS console)
Open the console at https://console.aws.amazon.com/ecs/v2
. -
From the navigation bar, choose the region that contains your task definition.
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In the navigation pane, choose Task definitions.
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On the Task definitions page, choose the task definition family that contains one or more revisions that you want to deregister.
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On the task definition Name page, select the revisions to delete, and then choose Actions, Deregister.
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Verify the information in the Deregister window, and then choose Deregister to finish.
