Copyright	(c) 2013-2021 Brendan Hay
License	Mozilla Public License, v. 2.0.
Maintainer	Brendan Hay <brendan.g.hay+amazonka@gmail.com>
Stability	auto-generated
Portability	non-portable (GHC extensions)
Safe Haskell	None

Amazonka.ECS.Types.PlacementStrategy

Description

Documentation

data PlacementStrategy Source #

The task placement strategy for a task or service. For more information, see Task Placement Strategies in the Amazon Elastic Container Service Developer Guide.

See: newPlacementStrategy smart constructor.

Constructors

PlacementStrategy'

Fields

field :: Maybe Text
The field to apply the placement strategy against. For the spread placement strategy, valid values are instanceId (or host, which has the same effect), or any platform or custom attribute that is applied to a container instance, such as attribute:ecs.availability-zone. For the binpack placement strategy, valid values are cpu and memory. For the random placement strategy, this field is not used.
type' :: Maybe PlacementStrategyType
The type of placement strategy. The random placement strategy randomly places tasks on available candidates. The spread placement strategy spreads placement across available candidates evenly based on the field parameter. The binpack strategy places tasks on available candidates that have the least available amount of the resource that is specified with the field parameter. For example, if you binpack on memory, a task is placed on the instance with the least amount of remaining memory (but still enough to run the task).

Instances

Instances details

Eq PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy Methods (==) :: PlacementStrategy -> PlacementStrategy -> Bool # (/=) :: PlacementStrategy -> PlacementStrategy -> Bool #
Read PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy Methods readsPrec :: Int -> ReadS PlacementStrategy # readList :: ReadS [PlacementStrategy] # readPrec :: ReadPrec PlacementStrategy # readListPrec :: ReadPrec [PlacementStrategy] #
Show PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy Methods showsPrec :: Int -> PlacementStrategy -> ShowS # show :: PlacementStrategy -> String # showList :: [PlacementStrategy] -> ShowS #
Generic PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy Associated Types type Rep PlacementStrategy :: Type -> Type # Methods from :: PlacementStrategy -> Rep PlacementStrategy x # to :: Rep PlacementStrategy x -> PlacementStrategy #
NFData PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy Methods rnf :: PlacementStrategy -> () #
Hashable PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy Methods hashWithSalt :: Int -> PlacementStrategy -> Int # hash :: PlacementStrategy -> Int #
ToJSON PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy Methods toJSON :: PlacementStrategy -> Value # toEncoding :: PlacementStrategy -> Encoding # toJSONList :: [PlacementStrategy] -> Value # toEncodingList :: [PlacementStrategy] -> Encoding #
FromJSON PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy Methods parseJSON :: Value -> Parser PlacementStrategy # parseJSONList :: Value -> Parser [PlacementStrategy] #
type Rep PlacementStrategy Source #
Instance details Defined in Amazonka.ECS.Types.PlacementStrategy type Rep PlacementStrategy = D1 ('MetaData "PlacementStrategy" "Amazonka.ECS.Types.PlacementStrategy" "libZSservicesZSamazonka-ecsZSamazonka-ecs" 'False) (C1 ('MetaCons "PlacementStrategy'" 'PrefixI 'True) (S1 ('MetaSel ('Just "field") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)) :*: S1 ('MetaSel ('Just "type'") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe PlacementStrategyType))))

newPlacementStrategy :: PlacementStrategy Source #

Create a value of PlacementStrategy with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:field:PlacementStrategy', placementStrategy_field - The field to apply the placement strategy against. For the spread placement strategy, valid values are instanceId (or host, which has the same effect), or any platform or custom attribute that is applied to a container instance, such as attribute:ecs.availability-zone. For the binpack placement strategy, valid values are cpu and memory. For the random placement strategy, this field is not used.

$sel:type':PlacementStrategy', placementStrategy_type - The type of placement strategy. The random placement strategy randomly places tasks on available candidates. The spread placement strategy spreads placement across available candidates evenly based on the field parameter. The binpack strategy places tasks on available candidates that have the least available amount of the resource that is specified with the field parameter. For example, if you binpack on memory, a task is placed on the instance with the least amount of remaining memory (but still enough to run the task).

placementStrategy_field :: Lens' PlacementStrategy (Maybe Text) Source #

The field to apply the placement strategy against. For the spread placement strategy, valid values are instanceId (or host, which has the same effect), or any platform or custom attribute that is applied to a container instance, such as attribute:ecs.availability-zone. For the binpack placement strategy, valid values are cpu and memory. For the random placement strategy, this field is not used.

placementStrategy_type :: Lens' PlacementStrategy (Maybe PlacementStrategyType) Source #

The type of placement strategy. The random placement strategy randomly places tasks on available candidates. The spread placement strategy spreads placement across available candidates evenly based on the field parameter. The binpack strategy places tasks on available candidates that have the least available amount of the resource that is specified with the field parameter. For example, if you binpack on memory, a task is placed on the instance with the least amount of remaining memory (but still enough to run the task).