[ aws . emr ]



Provides information for all active Amazon EC2 instances and Amazon EC2 instances terminated in the last 30 days, up to a maximum of 2,000. Amazon EC2 instances in any of the following states are considered active: AWAITING_FULFILLMENT, PROVISIONING, BOOTSTRAPPING, RUNNING.

See also: AWS API Documentation

list-instances is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: Instances


--cluster-id <value>
[--instance-group-id <value>]
[--instance-group-types <value>]
[--instance-fleet-id <value>]
[--instance-fleet-type <value>]
[--instance-states <value>]
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]
[--endpoint-url <value>]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]


--cluster-id (string)

The identifier of the cluster for which to list the instances.

--instance-group-id (string)

The identifier of the instance group for which to list the instances.

--instance-group-types (list)

The type of instance group for which to list the instances.



"string" "string" ...

Where valid values are:

--instance-fleet-id (string)

The unique identifier of the instance fleet.

--instance-fleet-type (string)

The node type of the instance fleet. For example MASTER, CORE, or TASK.

Possible values:

  • CORE
  • TASK

--instance-states (list)

A list of instance states that will filter the instances returned with this request.



"string" "string" ...

Where valid values are:

--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.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--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.

Global Options

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination.

--output (string)

The formatting style for command output.

  • json
  • text
  • table
  • yaml
  • yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

  • on
  • off
  • auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

  • base64
  • raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.



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 .

The following command lists all of the instances in a cluster with the cluster ID j-3C6XNQ39VR9WL:

aws emr list-instances --cluster-id j-3C6XNQ39VR9WL


For a uniform instance group based cluster
    "Instances": [
            "Status": {
                "Timeline": {
                    "ReadyDateTime": 1433200400.03,
                    "CreationDateTime": 1433199960.152
                "State": "RUNNING",
                "StateChangeReason": {}
            "Ec2InstanceId": "i-f19ecfee",
            "PublicDnsName": "ec2-52-52-41-150.us-west-2.compute.amazonaws.com",
            "PrivateDnsName": "ip-172-21-11-216.us-west-2.compute.internal",
            "PublicIpAddress": "",
            "Id": "ci-3NNHQUQ2TWB6Y",
            "PrivateIpAddress": ""
            "Status": {
                "Timeline": {
                    "ReadyDateTime": 1433200400.031,
                    "CreationDateTime": 1433199949.102
                "State": "RUNNING",
                "StateChangeReason": {}
            "Ec2InstanceId": "i-1feee4c2",
            "PublicDnsName": "ec2-52-63-246-32.us-west-2.compute.amazonaws.com",
            "PrivateDnsName": "ip-172-31-24-130.us-west-2.compute.internal",
            "PublicIpAddress": "",
            "Id": "ci-GAOCMKNKDCV7",
            "PrivateIpAddress": ""
            "Status": {
                "Timeline": {
                    "ReadyDateTime": 1433200400.031,
                    "CreationDateTime": 1433199949.102
                "State": "RUNNING",
                "StateChangeReason": {}
            "Ec2InstanceId": "i-15cfeee3",
            "PublicDnsName": "ec2-52-25-246-63.us-west-2.compute.amazonaws.com",
            "PrivateDnsName": "ip-172-31-24-129.us-west-2.compute.internal",
            "PublicIpAddress": "",
            "Id": "ci-2W3TDFFB47UAD",
            "PrivateIpAddress": ""

For a fleet based cluster:
      "Instances": [
              "Status": {
                  "Timeline": {
                      "ReadyDateTime": 1487810810.878,
                      "CreationDateTime": 1487810588.367,
                      "EndDateTime": 1488022990.924
                  "State": "TERMINATED",
                  "StateChangeReason": {
                      "Message": "Instance was terminated."
              "Ec2InstanceId": "i-xxxxx",
              "InstanceFleetId": "if-xxxxx",
              "EbsVolumes": [],
              "PublicDnsName": "ec2-xx-xxx-xxx-xxx.compute-1.amazonaws.com",
              "InstanceType": "m3.xlarge",
              "PrivateDnsName": "ip-xx-xx-xxx-xx.ec2.internal",
              "Market": "SPOT",
              "PublicIpAddress": "xx.xx.xxx.xxx",
              "Id": "ci-xxxxx",
              "PrivateIpAddress": ""


Instances -> (list)

The list of instances for the cluster and given filters.


Represents an Amazon EC2 instance provisioned as part of cluster.

Id -> (string)

The unique identifier for the instance in Amazon EMR.

Ec2InstanceId -> (string)

The unique identifier of the instance in Amazon EC2.

PublicDnsName -> (string)

The public DNS name of the instance.

PublicIpAddress -> (string)

The public IP address of the instance.

PrivateDnsName -> (string)

The private DNS name of the instance.

PrivateIpAddress -> (string)

The private IP address of the instance.

Status -> (structure)

The current status of the instance.

State -> (string)

The current state of the instance.

StateChangeReason -> (structure)

The details of the status change reason for the instance.

Code -> (string)

The programmable code for the state change reason.

Message -> (string)

The status change reason description.

Timeline -> (structure)

The timeline of the instance status over time.

CreationDateTime -> (timestamp)

The creation date and time of the instance.

ReadyDateTime -> (timestamp)

The date and time when the instance was ready to perform tasks.

EndDateTime -> (timestamp)

The date and time when the instance was terminated.

InstanceGroupId -> (string)

The identifier of the instance group to which this instance belongs.

InstanceFleetId -> (string)

The unique identifier of the instance fleet to which an Amazon EC2 instance belongs.

Market -> (string)

The instance purchasing option. Valid values are ON_DEMAND or SPOT .

InstanceType -> (string)

The Amazon EC2 instance type, for example m3.xlarge .

EbsVolumes -> (list)

The list of Amazon EBS volumes that are attached to this instance.


EBS block device that’s attached to an Amazon EC2 instance.

Device -> (string)

The device name that is exposed to the instance, such as /dev/sdh.

VolumeId -> (string)

The volume identifier of the EBS volume.

Marker -> (string)

The pagination token that indicates the next set of results to retrieve.