AWS::ECS::TaskDefinition SystemControl - Amazon CloudFormation
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AWS::ECS::TaskDefinition SystemControl

A list of namespaced kernel parameters to set in the container. This parameter maps to Sysctls in the Create a container section of the Docker Remote API and the --sysctl option to docker run.

We don't recommend that you specify network-related systemControls parameters for multiple containers in a single task. This task also uses either the awsvpc or host network mode. It does it for the following reasons.

  • For tasks that use the awsvpc network mode, if you set systemControls for any container, it applies to all containers in the task. If you set different systemControls for multiple containers in a single task, the container that's started last determines which systemControls take effect.

  • For tasks that use the host network mode, the systemControls parameter applies to the container instance's kernel parameter and that of all containers of any tasks running on that container instance.


To declare this entity in your Amazon CloudFormation template, use the following syntax:


{ "Namespace" : String, "Value" : String }


Namespace: String Value: String



The namespaced kernel parameter to set a value for.

Required: No

Type: String

Update requires: Replacement


The value for the namespaced kernel parameter that's specified in namespace.

Required: No

Type: String

Update requires: Replacement