get-connectivity-info¶

Description¶

Retrieves connectivity information for a Greengrass core device.

Connectivity information includes endpoints and ports where client devices can connect to an MQTT broker on the core device. When a client device calls the IoT Greengrass discovery API , IoT Greengrass returns connectivity information for all of the core devices where the client device can connect. For more information, see Connect client devices to core devices in the IoT Greengrass Version 2 Developer Guide .

Synopsis¶

  get-connectivity-info
--thing-name <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options¶

--thing-name (string)

The name of the core device. This is also the name of the IoT thing.

--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 get the connectivity information for a Greengrass core device

The following get-connectivity-info example gets the connectivity information for a Greengrass core device. Client devices use this information to connect to the MQTT broker that runs on this core device.

aws greengrassv2 get-connectivity-info \
    --thing-name MyGreengrassCore

Output:

{
    "connectivityInfo": [
        {
            "id": "localIP_192.0.2.0",
            "hostAddress": "192.0.2.0",
            "portNumber": 8883
        }
    ]
}

For more information, see Manage core device endpoints in the AWS IoT Greengrass V2 Developer Guide.

Output¶

connectivityInfo -> (list)

The connectivity information for the core device.

(structure)

Contains information about an endpoint and port where client devices can connect to an MQTT broker on a Greengrass core device.

id -> (string)

An ID for the connectivity information.

hostAddress -> (string)

The IP address or DNS address where client devices can connect to an MQTT broker on the Greengrass core device.

portNumber -> (integer)

The port where the MQTT broker operates on the core device. This port is typically 8883, which is the default port for the MQTT broker component that runs on core devices.

metadata -> (string)

Additional metadata to provide to client devices that connect to this core device.

message -> (string)

A message about the connectivity information request.

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