Questions tagged with AWS IoT Device Management

Hi, I am using the **AWS IOT Core** service, In that, I created a Thing and I used **Thing API** directly in the **EC2 instance**. I am receiving data from the topic to which I subscribed. But here I am **losing lots of packets from that topic**. Is it because lots of devices are connected to a single thing? and how to solve this problem? please suggest to me how to solve this...lg...

When using aws iot core, do I need to use a different certificate for each device? If there are many devices, isn't it difficult and inconvenient to use each certificate for each device? Is there any good way? Thank you.lg...

Can we store Device/Thing MetaData in AWS IOT core ? We have iot things that we provision using fleet provisioning. These devices have metadata associated with it and other characteristics example battery health data which can change. What is a good practice to maintain this data ? Should we use device shadows to maintain the battery health etc ? This data only flows from the device to aws and not vice versa , is the device shadow still a good place to hold the information ? How do we store the metadata associated with a thing ? We will need to retrieve this data using api's when needed.lg...

When trying to create a Device Profile for LoRaWAN Rx1Delay defaults to 1 second delay no matter what it is set to. The range is 1 - 15 seconds. I looked in the EU868 spectrum with an SDR and the rx response from my LoRaWAN gateway is consistently about 1 second.lg...

We are looking into iot device management solutions and are analyzing the AWS iot core and greengrass among other products. Our iot devices can be of different types and we will also have zebra devices on android. The AWS iot documents mention that greengrass is supported on Linux and windows. Can we effectively use it for Android devices also? Also we are looking at fleet provisioning of the iot devices. Is this supported for Android devices? Thank you.lg...

I might be missing something here, but I'd like to use Boto3 to create and queue downlink messages to LoRa devices. However, the docs only appear to support `delete_queued_messages()` and `list_queued_messages()`. https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/iotwireless.html Does boto3 really only support listing and deleting downlinks? Is there no way to create?lg...

So I have some sensors that are sending MQTT data using the IOT Core to DynamoDB. However I note that there are always 2 messages(duplicates). I am using Select for the topic, set up a Rule as was needed,etc. ITs all working fine, except for the duplicates. I looked through the questions but didn't find an answer. Any suggestion to find the root cause appreciated. Regards 6/11/22 additional data Some additional info might be useful so I have provided it here. Rule query statement The source of the messages you want to process with this rule. Extract below............. SELECT state.reported.value as state_reported_value FROM '#' Using SQL version 2016-03-23 Actions Actions are what happens when a rule is triggered. Insert a message into a DynamoDB table Extract end................. Hope this helps in directing me. Regardslg...

[this page](https://docs.aws.amazon.com/freertos/archive/202012.00/userguide/getting_started_espressif.html) explains how to easily connect. Does this also work with DevKitC-1 or only DevKitC-4? Does my specific devboard support quick connect and all the benefits listed [here](https://devices.amazonaws.com/detail/a3G0h0000077nRtEAI/ESP32-WROOM-32SE)? I don't have much experience, so any help would be greatly appreciated.lg...

Hello, i have been using aws iot jobs for sending custom jobs like restarting a service, rebooting a device or running a custom ota job like pulling from git. I have noticed that when i run the built binary of aws-iot-client manually from a shell with the job's config file it works when it recieves a custom ota job. But when the same binary with same config file is run from aws iot service it doesn't work. The job reports failed state with a message code exited with status code 1. Can you help me more on this. The update-software.sh file for ota handler is: ``` #!/usr/bin/env sh set -e echo "Running update-software.sh" user=$1 echo "Username: $user" if id "$user" 2>/dev/null && command -v "git" > /dev/null then echo "Starting the update command" . /home/pi/triton_software/update.sh else "Update failed!!" exit 1 fi echo "update-software command is done" ``` and the update.sh script which is being called is ``` #!/usr/bin/env sh cd /home/pi/amazon-kinesis-video-streams-producer-sdk-cpp; git pull origin main; cd build/; cmake -DBUILD_GSTREAMER_PLUGIN=TRUE ..; make; ``` Any help is appreciated, Thanks Subhamlg...

Hello, I was wondering if there's any easy and fast implantation way to get online/offline status in the console as soon as a iot thing comes online or goes offline. Any help is appreciated.lg...

Hello, i have been trying to setup a rpi using the tutorials [here](https://docs.aws.amazon.com/iot/latest/developerguide/iot-dc-install-configure.html) and when i run the command `./aws-iot-device-client --config-file ~/dc-configs/dc-testconn-config.json ` i am getting errors on the terminal saying that the aws crt sdk is not found with a fatal error like this ``` 2022-04-11T07:38:13.850Z [WARN] {Config.cpp}: Key {template-name} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.850Z [WARN] {Config.cpp}: Key {csr-file} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.850Z [WARN] {Config.cpp}: Key {device-key} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.850Z [WARN] {Config.cpp}: Key {file} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.850Z [WARN] {Config.cpp}: Key {publish-file} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.851Z [WARN] {Config.cpp}: Key {subscribe-file} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.851Z [WARN] {Config.cpp}: Shadow Name {shadow-name} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.851Z [WARN] {Config.cpp}: Input file {shadow-input-file} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.851Z [WARN] {Config.cpp}: Output file {shadow-output-file} was provided in the JSON configuration file with an empty value 2022-04-11T07:38:13.851Z [INFO] {Config.cpp}: Successfully fetched JSON config file: { "endpoint": "a32vqcn021ykiy-ats.iot.ap-south-1.amazonaws.com", "cert": "~/certs/testconn/device.pem.crt", "key": "~/certs/testconn/private.pem.key", "root-ca": "~/certs/AmazonRootCA1.pem", "thing-name": "Triton_Dp_Office", "logging": { "enable-sdk-logging": true, "level": "DEBUG", "type": "STDOUT", "file": "" }, "jobs": { "enabled": false, "handler-directory": "" }, "tunneling": { "enabled": false }, "device-defender": { "enabled": false, "interval": 300 }, "fleet-provisioning": { "enabled": false, "template-name": "", "template-parameters": "", "csr-file": "", "device-key": "" }, "samples": { "pub-sub": { "enabled": true, "publish-topic": "test/dc/pubtopic", "publish-file": "", "subscribe-topic": "test/dc/subtopic", "subscribe-file": "" } }, "config-shadow": { "enabled": false }, "sample-shadow": { "enabled": false, "shadow-name": "", "shadow-input-file": "", "shadow-output-file": "" } } 2022-04-11T07:38:13.851Z [DEBUG] {Config.cpp}: Did not find a runtime configuration file, assuming Fleet Provisioning has not run for this device 2022-04-11T07:38:13.852Z [DEBUG] {EnvUtils.cpp}: Updated PATH environment variable to: /home/pi/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:/snap/bin:/home/pi/.aws-iot-device-client:/home/pi/.aws-iot-device-client/jobs:/home/pi/aws-iot-device-client/build:/home/pi/aws-iot-device-client/build/jobs 2022-04-11T07:38:13.852Z [INFO] {Main.cpp}: Now running AWS IoT Device Client version v1.5.19-868465b 2022-04-11T07:38:13.860Z [ERROR] {FileUtils.cpp}: Failed to create empty file: /var/log/aws-iot-device-client/sdk.log errno: 17 msg: File exists 2022-04-11T07:38:13.860Z [ERROR] {Main.cpp}: *** AWS IOT DEVICE CLIENT FATAL ERROR: Failed to initialize AWS CRT SDK. AWS IoT Device Client must abort execution, reason: Failed to initialize AWS CRT SDK Please check the AWS IoT Device Client logs for more information Aborted ``` I need this setup asap to work on deploying a fleet and test out AWS IOT Jobs. Any help is appreciated.lg...

Hello, I recently onboarded one of 30 rpi's which acts like a streaming device using KVS ont aws iot Greengrass v2. I have tried with custom components and deploying them and all works fine but when i create a custom job like Amazon managed templates for rebooting the device, the greengrass is not recieving anything and the job stays in Queued State forever. I am trying to post a Snapshot type job. Any help is appreciated.lg...