Release: Amazon IoT Greengrass Core v2.12.1 software update on December 8, 2023 - Amazon IoT Greengrass
Public component updates
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Release: Amazon IoT Greengrass Core v2.12.1 software update on December 8, 2023

This release provides version 2.12.1 of the Greengrass nucleus component and updates to Amazon-provided components.

Release date: December 8, 2023

Public component updates

The following table lists components provided by Amazon that include new and updated features.

Important

When you deploy a component, Amazon IoT Greengrass installs the latest supported versions of all of that component's dependencies. Because of this, new patch versions of Amazon-provided public components might be automatically deployed to your core devices if you add new devices to a thing group, or you update the deployment that targets those devices. Some automatic updates, such as a nucleus update, can cause your devices to restart unexpectedly.

To prevent unintended updates for a component that is running on your device, we recommend that you directly include your preferred version of that component when you create a deployment. For more information about update behavior for Amazon IoT Greengrass Core software, see Update the Amazon IoT Greengrass Core software (OTA).

Component Details
Greengrass nucleus

Version 2.12.1 of the Greengrass nucleus is available.

Bug fixes and improvements

  • Fixes an issue where the nucleus may duplicate MQTT subscriptions to deployment topics leading to additional logging and MQTT publishes.
Client device auth

Version 2.4.5 of the client device auth component is available.

New features

Adds support for wildcard prefixes for selecting thing names with the selectionRule parameter.

Bug fixes and improvements

Fixes an issue where certificates aren't updated with new connectivity information in certain cases.
Disk spooler

Version 1.0.2 of the disk spooler component is available.

Bug fixes and improvements

Fixes an issue where the MQTT message format field isn't persisted in certain cases.
MQTT bridge

Version 2.3.1 of the disk spooler component is available.

Bug fixes and improvements

Fixes an issue where the local MQTT client gets into a disconnect loop.
Stream manager

Version 2.1.12 of the stream manager component is available.

Bug fixes and improvements

Updates the order that credentials are used so that Greengrass credentials are preferred for Amazon service requests.