Class: AWSCDK::ECS::CfnTaskDefinition::SystemControlProperty

Inherits:

Jsii::Struct

• Object
• Jsii::Struct
• AWSCDK::ECS::CfnTaskDefinition::SystemControlProperty

Defined in:

ecs/cfn_task_definition.rb

Overview

A list of namespaced kernel parameters to set in the container.

This parameter maps to Sysctls in the docker container create command and the --sysctl option to docker run. For example, you can configure net.ipv4.tcp_keepalive_time setting to maintain longer lived connections.

We don't recommend that you specify network-related system_controls parameters for multiple containers in a single task that also uses either the awsvpc or host network mode. Doing this has the following disadvantages:

• For tasks that use the awsvpc network mode including Fargate, if you set system_controls for any container, it applies to all containers in the task. If you set different system_controls for multiple containers in a single task, the container that's started last determines which system_controls take effect.
• For tasks that use the host network mode, the network namespace system_controls aren't supported.

If you're setting an IPC resource namespace to use for the containers in the task, the following conditions apply to your system controls. For more information, see IPC mode .

• For tasks that use the host IPC mode, IPC namespace system_controls aren't supported.
• For tasks that use the task IPC mode, IPC namespace system_controls values apply to all containers within a task.

This parameter is not supported for Windows containers. > This parameter is only supported for tasks that are hosted on AWS Fargate if the tasks are using platform version 1.4.0 or later (Linux). This isn't supported for Windows containers on Fargate.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecs-taskdefinition-systemcontrol.html

Instance Attribute Summary

• #namespace ⇒ String^? readonly

  The namespaced kernel parameter to set a value for.

• #value ⇒ String^? readonly

  The namespaced kernel parameter to set a value for.

Class Method Summary

• .jsii_properties ⇒ Object

Instance Method Summary

• #initialize(namespace: nil, value: nil) ⇒ SystemControlProperty constructor

  A new instance of SystemControlProperty.

• #to_jsii ⇒ Object

Constructor Details

#initialize(namespace: nil, value: nil) ⇒ SystemControlProperty

Returns a new instance of SystemControlProperty.

Parameters:

• namespace (String, nil) (defaults to: nil) —

  The namespaced kernel parameter to set a value for.

• value (String, nil) (defaults to: nil) —

  The namespaced kernel parameter to set a value for.

# File 'ecs/cfn_task_definition.rb', line 3216

def initialize(namespace: nil, value: nil)
  @namespace = namespace
  Jsii::Type.check_type(@namespace, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "namespace") unless @namespace.nil?
  @value = value
  Jsii::Type.check_type(@value, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "value") unless @value.nil?
end

Instance Attribute Details

#namespace ⇒ String^? (readonly)

The namespaced kernel parameter to set a value for.

Returns:

• (String, nil)

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecs-taskdefinition-systemcontrol.html#cfn-ecs-taskdefinition-systemcontrol-namespace

# File 'ecs/cfn_task_definition.rb', line 3227

def namespace
  @namespace
end

#value ⇒ String^? (readonly)

The namespaced kernel parameter to set a value for.

Valid IPC namespace values: "kernel.msgmax" | "kernel.msgmnb" | "kernel.msgmni" | "kernel.sem" | "kernel.shmall" | "kernel.shmmax" | "kernel.shmmni" | "kernel.shm_rmid_forced" , and Sysctls that start with "fs.mqueue.*"

Valid network namespace values: Sysctls that start with "net.*" . Only namespaced Sysctls that exist within the container starting with "net.* are accepted.

All of these values are supported by Fargate.

Returns:

• (String, nil)

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecs-taskdefinition-systemcontrol.html#cfn-ecs-taskdefinition-systemcontrol-value

# File 'ecs/cfn_task_definition.rb', line 3238

def value
  @value
end

Class Method Details

.jsii_properties ⇒ Object

# File 'ecs/cfn_task_definition.rb', line 3240

def self.jsii_properties
  {
    :namespace => "namespace",
    :value => "value",
  }
end

Instance Method Details

#to_jsii ⇒ Object

# File 'ecs/cfn_task_definition.rb', line 3247

def to_jsii
  result = {}
  result.merge!({
    "namespace" => @namespace,
    "value" => @value,
  })
  result.compact
end