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[ aws . emr ]



ModifyInstanceGroups modifies the number of nodes and configuration settings of an instance group. The input parameters include the new target instance count for the group and the instance group ID. The call will either succeed or fail atomically.

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.


[--cluster-id <value>]
[--instance-groups <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]


--cluster-id (string)

The ID of the cluster to which the instance group belongs.

--instance-groups (list)

Instance groups to change.

JSON Syntax:

    "InstanceGroupId": "string",
    "InstanceCount": integer,
    "EC2InstanceIdsToTerminate": ["string", ...],
    "ShrinkPolicy": {
      "DecommissionTimeout": integer,
      "InstanceResizePolicy": {
        "InstancesToTerminate": ["string", ...],
        "InstancesToProtect": ["string", ...],
        "InstanceTerminationTimeout": integer

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI 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.

--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. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.