Package software.amazon.awssdk.services.batch.model

Class LinuxParameters

    • Method Detail

      • hasDevices

        public final boolean hasDevices()
        For responses, this returns true if the service returned a value for the Devices property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

      • devices

        public final List<Device> devices()

        Any of the host devices to expose to the container. This parameter maps to Devices in the Create a container section of the Docker Remote API and the --device option to docker run.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide it for these jobs.

        Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

        This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasDevices() method.

        Returns:
        Any of the host devices to expose to the container. This parameter maps to Devices in the Create a container section of the Docker Remote API and the --device option to docker run.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide it for these jobs.

      • initProcessEnabled

        public final Boolean initProcessEnabled()

        If true, run an init process inside the container that forwards signals and reaps processes. This parameter maps to the --init option to docker run. This parameter requires version 1.25 of the Docker Remote API or greater on your container instance. To check the Docker Remote API version on your container instance, log in to your container instance and run the following command: sudo docker version | grep "Server API version"

        Returns:
        If true, run an init process inside the container that forwards signals and reaps processes. This parameter maps to the --init option to docker run. This parameter requires version 1.25 of the Docker Remote API or greater on your container instance. To check the Docker Remote API version on your container instance, log in to your container instance and run the following command: sudo docker version | grep "Server API version"

      • sharedMemorySize

        public final Integer sharedMemorySize()

        The value for the size (in MiB) of the /dev/shm volume. This parameter maps to the --shm-size option to docker run.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide it for these jobs.

        Returns:
        The value for the size (in MiB) of the /dev/shm volume. This parameter maps to the --shm-size option to docker run.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide it for these jobs.

      • hasTmpfs

        public final boolean hasTmpfs()
        For responses, this returns true if the service returned a value for the Tmpfs property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

      • tmpfs

        public final List<Tmpfs> tmpfs()

        The container path, mount options, and size (in MiB) of the tmpfs mount. This parameter maps to the --tmpfs option to docker run.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide this parameter for this resource type.

        Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

        This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasTmpfs() method.

        Returns:
        The container path, mount options, and size (in MiB) of the tmpfs mount. This parameter maps to the --tmpfs option to docker run.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide this parameter for this resource type.

      • maxSwap

        public final Integer maxSwap()

        The total amount of swap memory (in MiB) a container can use. This parameter is translated to the --memory-swap option to docker run where the value is the sum of the container memory plus the maxSwap value. For more information, see --memory-swap details in the Docker documentation.

        If a maxSwap value of 0 is specified, the container doesn't use swap. Accepted values are 0 or any positive integer. If the maxSwap parameter is omitted, the container doesn't use the swap configuration for the container instance that it's running on. A maxSwap value must be set for the swappiness parameter to be used.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide it for these jobs.

        Returns:
        The total amount of swap memory (in MiB) a container can use. This parameter is translated to the --memory-swap option to docker run where the value is the sum of the container memory plus the maxSwap value. For more information, see --memory-swap details in the Docker documentation.

        If a maxSwap value of 0 is specified, the container doesn't use swap. Accepted values are 0 or any positive integer. If the maxSwap parameter is omitted, the container doesn't use the swap configuration for the container instance that it's running on. A maxSwap value must be set for the swappiness parameter to be used.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide it for these jobs.

      • swappiness

        public final Integer swappiness()

        You can use this parameter to tune a container's memory swappiness behavior. A swappiness value of 0 causes swapping to not occur unless absolutely necessary. A swappiness value of 100 causes pages to be swapped aggressively. Valid values are whole numbers between 0 and 100. If the swappiness parameter isn't specified, a default value of 60 is used. If a value isn't specified for maxSwap, then this parameter is ignored. If maxSwap is set to 0, the container doesn't use swap. This parameter maps to the --memory-swappiness option to docker run.

        Consider the following when you use a per-container swap configuration.

        • Swap space must be enabled and allocated on the container instance for the containers to use.

          By default, the Amazon ECS optimized AMIs don't have swap enabled. You must enable swap on the instance to use this feature. For more information, see Instance store swap volumes in the Amazon EC2 User Guide for Linux Instances or How do I allocate memory to work as swap space in an Amazon EC2 instance by using a swap file?

        • The swap space parameters are only supported for job definitions using EC2 resources.

        • If the maxSwap and swappiness parameters are omitted from a job definition, each container has a default swappiness value of 60. Moreover, the total swap usage is limited to two times the memory reservation of the container.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide it for these jobs.

        Returns:
        You can use this parameter to tune a container's memory swappiness behavior. A swappiness value of 0 causes swapping to not occur unless absolutely necessary. A swappiness value of 100 causes pages to be swapped aggressively. Valid values are whole numbers between 0 and 100. If the swappiness parameter isn't specified, a default value of 60 is used. If a value isn't specified for maxSwap, then this parameter is ignored. If maxSwap is set to 0, the container doesn't use swap. This parameter maps to the --memory-swappiness option to docker run.

        Consider the following when you use a per-container swap configuration.

        • Swap space must be enabled and allocated on the container instance for the containers to use.

          By default, the Amazon ECS optimized AMIs don't have swap enabled. You must enable swap on the instance to use this feature. For more information, see Instance store swap volumes in the Amazon EC2 User Guide for Linux Instances or How do I allocate memory to work as swap space in an Amazon EC2 instance by using a swap file?

        • The swap space parameters are only supported for job definitions using EC2 resources.

        • If the maxSwap and swappiness parameters are omitted from a job definition, each container has a default swappiness value of 60. Moreover, the total swap usage is limited to two times the memory reservation of the container.

        This parameter isn't applicable to jobs that are running on Fargate resources. Don't provide it for these jobs.

      • hashCode

        public final int hashCode()
        Overrides:
        hashCode in class Object

      • equals

        public final boolean equals​(Object obj)
        Overrides:
        equals in class Object

      • toString

        public final String toString()
        Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be redacted from this string using a placeholder value.
        Overrides:
        toString in class Object

      • getValueForField

        public final <T> Optional<T> getValueForField​(String fieldName,
                                              Class<T> clazz)