Dave Malone dave-malone

Modify your Thing's policy to allow it to connect to the Greengrass Discovery service:

Secure -> Policies
Select your Thing's Policy
Edit your Thing's Policy document, and Save as a new version. See my example policy, specifically the addition of the greengrass:Discover statement at the bottom of the policy:

{
  "Version": "2012-10-17",
  "Statement": [

THING_TYPE_NAME=multi-attribute-type
THING_NAME=multi-attribute-thing
DYNAMIC_GROUP_NAME=multi-attribute-dynamic-group

aws iot create-thing-type --thing-type-name $THING_TYPE_NAME

aws iot create-thing \
  --thing-name $THING_NAME \
 --thing-type-name $THING_TYPE_NAME \

TARGET_ARCHITECTURE=armv7l TARGET_OPERATING_SYSTEM=raspbian S3_URL_SIGNER_ROLE_ARN="arn:aws:iam:::role/AllowAccessToGreengrassOTAUpdateArtifacts" GG_UPDATE_TARGET="arn:aws:iot:us-east-1::thing/<GG_CORE_THING_NAME>"

aws greengrass create-software-update-job
--update-targets-architecture $TARGET_ARCHITECTURE
--update-targets "${GG_UPDATE_TARGET}"
--update-targets-operating-system $TARGET_OPERATING_SYSTEM
--software-to-update core \

	#
	# Copyright 2010-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
	#

	# greengrassHelloWorld.py
	# Demonstrates a simple publish to a topic using Greengrass core sdk
	# This lambda function will retrieve underlying platform information and send
	# a hello world message along with the platform information to the topic 'hello/world'
	# The function will sleep for five seconds, then repeat. Since the function is
	# long-lived it will run forever when deployed to a Greengrass core. The handler

	rm hello_world_python_lambda.zip
	zip -r hello_world_python_lambda.zip greengrasssdk greengrassHelloWorld.py

	update_lambda_result=$(aws lambda update-function-code \
	--function-name Greengrass_HelloWorld \
	--zip-file fileb://hello_world_python_lambda.zip \
	--publish)


	latest_lambda_version=$(echo "$update_lambda_result" \| jq -r '.Version')

	from __future__ import print_function
	import sys
	import ssl
	import time
	import datetime
	import logging, traceback
	import paho.mqtt.client as mqtt

	IoT_protocol_name = "x-amzn-mqtt-ca"
	aws_iot_endpoint = "a1tq0bx5we8tnk-ats.iot.us-east-1.amazonaws.com"

	const AWS = require('aws-sdk')

	AWS.config.region = process.env.AWS_REGION

	const kinesisvideo = new AWS.KinesisVideo({
	})

	function getStreamingSessionURL(){
	return new Promise((resolve, reject) => {
	var getEndpointParams = {

	import time
	import logging
	import threading
	import atexit
	from adafruit_crickit import crickit

	format = "%(asctime)s: %(message)s"
	logging.basicConfig(format=format, level=logging.INFO, datefmt="%H:%M:%S")

	# make two variables for the motors to make code shorter to type

	I was unable to free up disk space on my Raspberry Pi recently, and I kept getting a "cannot remove... Read-only file system" error when attempting to run the `rm` command. The following step was necessary prior to then removing uncessary files and freeing up space on the filesystem.

	`sudo mount -o remount,rw /`

	ps aux \| grep lambda_runtime
	sudo nsenter -t $PID -m /bin/bash