Package software.amazon.awscdk.services.ec2

Class CfnPlacementGroup

java.lang.Object
software.amazon.jsii.JsiiObject
software.constructs.Construct
software.amazon.awscdk.CfnElement
software.amazon.awscdk.CfnRefElement
software.amazon.awscdk.CfnResource
software.amazon.awscdk.services.ec2.CfnPlacementGroup
All Implemented Interfaces:
IInspectable, ITaggable, IPlacementGroupRef, software.amazon.jsii.JsiiSerializable, software.constructs.IConstruct, software.constructs.IDependable
@Generated(value="jsii-pacmak/1.116.0 (build 0eddcff)", date="2025-10-29T11:15:37.165Z") @Stability(Stable) public class CfnPlacementGroup extends CfnResource implements IInspectable, IPlacementGroupRef, ITaggable
Specifies a placement group in which to launch instances.

The strategy of the placement group determines how the instances are organized within the group.

A cluster placement group is a logical grouping of instances within a single Availability Zone that benefit from low network latency, high network throughput. A spread placement group places instances on distinct hardware. A partition placement group places groups of instances in different partitions, where instances in one partition do not share the same hardware with instances in another partition.

For more information, see Placement Groups in the Amazon EC2 User Guide .

Example: 

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.services.ec2.*;
 CfnPlacementGroup cfnPlacementGroup = CfnPlacementGroup.Builder.create(this, "MyCfnPlacementGroup")
         .partitionCount(123)
         .spreadLevel("spreadLevel")
         .strategy("strategy")
         .tags(List.of(CfnTag.builder()
                 .key("key")
                 .value("value")
                 .build()))
         .build();

See Also:

  • Field Details

    • CFN_RESOURCE_TYPE_NAME

      @Stability(Stable) public static final String CFN_RESOURCE_TYPE_NAME
      The CloudFormation resource type name for this resource class.

  • Constructor Details

    • CfnPlacementGroup

      protected CfnPlacementGroup(software.amazon.jsii.JsiiObjectRef objRef)

    • CfnPlacementGroup

      protected CfnPlacementGroup(software.amazon.jsii.JsiiObject.InitializationMode initializationMode)

    • CfnPlacementGroup

      @Stability(Stable) public CfnPlacementGroup(@NotNull software.constructs.Construct scope, @NotNull String id, @Nullable CfnPlacementGroupProps props)
      Parameters:
      scope - Scope in which this resource is defined. This parameter is required.
      id - Construct identifier for this resource (unique in its scope). This parameter is required.
      props - Resource properties.

    • CfnPlacementGroup

      @Stability(Stable) public CfnPlacementGroup(@NotNull software.constructs.Construct scope, @NotNull String id)
      Parameters:
      scope - Scope in which this resource is defined. This parameter is required.
      id - Construct identifier for this resource (unique in its scope). This parameter is required.

  • Method Details

    • inspect

      @Stability(Stable) public void inspect(@NotNull TreeInspector inspector)
      Examines the CloudFormation resource and discloses attributes.

      Specified by:
      inspect in interface IInspectable
      Parameters:
      inspector - tree inspector to collect and process attributes. This parameter is required.

    • renderProperties

      @Stability(Stable) @NotNull protected Map<String,Object> renderProperties(@NotNull Map<String,Object> props)
      Overrides:
      renderProperties in class CfnResource
      Parameters:
      props - This parameter is required.

    • getAttrGroupName

      @Stability(Stable) @NotNull public String getAttrGroupName()
      The name of the placement group.

    • getCfnProperties

      @Stability(Stable) @NotNull protected Map<String,Object> getCfnProperties()
      Overrides:
      getCfnProperties in class CfnResource

    • getPlacementGroupRef

      @Stability(Stable) @NotNull public PlacementGroupReference getPlacementGroupRef()
      A reference to a PlacementGroup resource.
      Specified by:
      getPlacementGroupRef in interface IPlacementGroupRef

    • getTags

      @Stability(Stable) @NotNull public TagManager getTags()
      Tag Manager which manages the tags for this resource.
      Specified by:
      getTags in interface ITaggable

    • getPartitionCount

      @Stability(Stable) @Nullable public Number getPartitionCount()
      The number of partitions.

    • setPartitionCount

      @Stability(Stable) public void setPartitionCount(@Nullable Number value)
      The number of partitions.

    • getSpreadLevel

      @Stability(Stable) @Nullable public String getSpreadLevel()
      Determines how placement groups spread instances.

    • setSpreadLevel

      @Stability(Stable) public void setSpreadLevel(@Nullable String value)
      Determines how placement groups spread instances.

    • getStrategy

      @Stability(Stable) @Nullable public String getStrategy()
      The placement strategy.

    • setStrategy

      @Stability(Stable) public void setStrategy(@Nullable String value)
      The placement strategy.

    • getTagsRaw

      @Stability(Stable) @Nullable public List<CfnTag> getTagsRaw()
      The tags to apply to the new placement group.

    • setTagsRaw

      @Stability(Stable) public void setTagsRaw(@Nullable List<CfnTag> value)
      The tags to apply to the new placement group.