AWS CLI Command Reference

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[ aws . datasync ]

describe-location-hdfs

Description

Provides details about how an DataSync transfer location for a Hadoop Distributed File System (HDFS) is configured.

See also: AWS API Documentation

Synopsis

  describe-location-hdfs
--location-arn <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]

Options

--location-arn (string)

Specifies the Amazon Resource Name (ARN) of the HDFS location.

--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.

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

--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.

Output

LocationArn -> (string)

The ARN of the HDFS location.

LocationUri -> (string)

The URI of the HDFS location.

NameNodes -> (list)

The NameNode that manages the HDFS namespace.

(structure)

The NameNode of the Hadoop Distributed File System (HDFS). The NameNode manages the file system's namespace. The NameNode performs operations such as opening, closing, and renaming files and directories. The NameNode contains the information to map blocks of data to the DataNodes.

Hostname -> (string)

The hostname of the NameNode in the HDFS cluster. This value is the IP address or Domain Name Service (DNS) name of the NameNode. An agent that's installed on-premises uses this hostname to communicate with the NameNode in the network.

Port -> (integer)

The port that the NameNode uses to listen to client requests.

BlockSize -> (integer)

The size of the data blocks to write into the HDFS cluster.

ReplicationFactor -> (integer)

The number of DataNodes to replicate the data to when writing to the HDFS cluster.

KmsKeyProviderUri -> (string)

The URI of the HDFS cluster's Key Management Server (KMS).

QopConfiguration -> (structure)

The Quality of Protection (QOP) configuration, which specifies the Remote Procedure Call (RPC) and data transfer protection settings configured on the HDFS cluster.

RpcProtection -> (string)

The RPC protection setting configured on the HDFS cluster. This setting corresponds to your hadoop.rpc.protection setting in your core-site.xml file on your Hadoop cluster.

DataTransferProtection -> (string)

The data transfer protection setting configured on the HDFS cluster. This setting corresponds to your dfs.data.transfer.protection setting in the hdfs-site.xml file on your Hadoop cluster.

AuthenticationType -> (string)

The type of authentication used to determine the identity of the user.

SimpleUser -> (string)

The user name to identify the client on the host operating system. This parameter is used if the AuthenticationType is defined as SIMPLE .

KerberosPrincipal -> (string)

The Kerberos principal with access to the files and folders on the HDFS cluster. This parameter is used if the AuthenticationType is defined as KERBEROS .

AgentArns -> (list)

The ARNs of the DataSync agents that can connect with your HDFS cluster.

(string)

CreationTime -> (timestamp)

The time that the HDFS location was created.