[ aws . ec2 ]

create-placement-group

Description

Creates 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 .

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  create-placement-group
[--dry-run | --no-dry-run]
[--group-name <value>]
[--strategy <value>]
[--partition-count <value>]
[--tag-specifications <value>]
[--spread-level <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options

--dry-run | --no-dry-run (boolean)

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation . Otherwise, it is UnauthorizedOperation .

--group-name (string)

A name for the placement group. Must be unique within the scope of your account for the Region.

Constraints: Up to 255 ASCII characters

--strategy (string)

The placement strategy.

Possible values:

• cluster

• spread

• partition

--partition-count (integer)

The number of partitions. Valid only when Strategy is set to partition .

--tag-specifications (list)

The tags to apply to the new placement group.

(structure)

The tags to apply to a resource when the resource is being created.

Note

The Valid Values lists all the resource types that can be tagged. However, the action you’re using might not support tagging all of these resource types. If you try to tag a resource type that is unsupported for the action you’re using, you’ll get an error.

ResourceType -> (string)

The type of resource to tag on creation.

Tags -> (list)

The tags to apply to the resource.

(structure)

Describes a tag.

Key -> (string)

The key of the tag.

Constraints: Tag keys are case-sensitive and accept a maximum of 127 Unicode characters. May not begin with aws: .

Value -> (string)

The value of the tag.

Constraints: Tag values are case-sensitive and accept a maximum of 256 Unicode characters.

Shorthand Syntax:

ResourceType=string,Tags=[{Key=string,Value=string},{Key=string,Value=string}] ...

JSON Syntax:

[
  {
    "ResourceType": "capacity-reservation"|"client-vpn-endpoint"|"customer-gateway"|"carrier-gateway"|"dedicated-host"|"dhcp-options"|"egress-only-internet-gateway"|"elastic-ip"|"elastic-gpu"|"export-image-task"|"export-instance-task"|"fleet"|"fpga-image"|"host-reservation"|"image"|"import-image-task"|"import-snapshot-task"|"instance"|"instance-event-window"|"internet-gateway"|"ipam"|"ipam-pool"|"ipam-scope"|"ipv4pool-ec2"|"ipv6pool-ec2"|"key-pair"|"launch-template"|"local-gateway"|"local-gateway-route-table"|"local-gateway-virtual-interface"|"local-gateway-virtual-interface-group"|"local-gateway-route-table-vpc-association"|"local-gateway-route-table-virtual-interface-group-association"|"natgateway"|"network-acl"|"network-interface"|"network-insights-analysis"|"network-insights-path"|"network-insights-access-scope"|"network-insights-access-scope-analysis"|"placement-group"|"prefix-list"|"replace-root-volume-task"|"reserved-instances"|"route-table"|"security-group"|"security-group-rule"|"snapshot"|"spot-fleet-request"|"spot-instances-request"|"subnet"|"subnet-cidr-reservation"|"traffic-mirror-filter"|"traffic-mirror-session"|"traffic-mirror-target"|"transit-gateway"|"transit-gateway-attachment"|"transit-gateway-connect-peer"|"transit-gateway-multicast-domain"|"transit-gateway-policy-table"|"transit-gateway-route-table"|"transit-gateway-route-table-announcement"|"volume"|"vpc"|"vpc-endpoint"|"vpc-endpoint-service"|"vpc-peering-connection"|"vpn-connection"|"vpn-gateway"|"vpc-flow-log"|"capacity-reservation-fleet"|"traffic-mirror-filter-rule"|"vpc-endpoint-connection-device-type",
    "Tags": [
      {
        "Key": "string",
        "Value": "string"
      }
      ...
    ]
  }
  ...
]

--spread-level (string)

Determines how placement groups spread instances.

• Host – You can use host only with Outpost placement groups.

• Rack – No usage restrictions.

Possible values:

• host

• rack

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

See ‘aws help’ for descriptions of global parameters.

Examples

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To create a placement group

This example command creates a placement group with the specified name.

Command:

aws ec2 create-placement-group --group-name my-cluster --strategy cluster

To create a partition placement group

This example command creates a partition placement group named HDFS-Group-A with five partitions.

Command:

aws ec2 create-placement-group --group-name HDFS-Group-A --strategy partition --partition-count 5

Output

PlacementGroup -> (structure)

Describes a placement group.

GroupName -> (string)

The name of the placement group.

State -> (string)

The state of the placement group.

Strategy -> (string)

The placement strategy.

PartitionCount -> (integer)

The number of partitions. Valid only if strategy is set to partition .

GroupId -> (string)

The ID of the placement group.

Tags -> (list)

Any tags applied to the placement group.

(structure)

Describes a tag.

Key -> (string)

The key of the tag.

Constraints: Tag keys are case-sensitive and accept a maximum of 127 Unicode characters. May not begin with aws: .

Value -> (string)

The value of the tag.

Constraints: Tag values are case-sensitive and accept a maximum of 256 Unicode characters.

GroupArn -> (string)

The Amazon Resource Name (ARN) of the placement group.

SpreadLevel -> (string)

The spread level for the placement group. Only Outpost placement groups can be spread across hosts.