Release: AWS IoT Greengrass Core v2.10.0 software update on May 9, 2023 - AWS IoT Greengrass
Public component updates

Release: AWS IoT Greengrass Core v2.10.0 software update on May 9, 2023

This release provides version 2.10.0 of the Greengrass nucleus component and updates to AWS-provided components.

Release date: May 9, 2023

Release highlights

  • MQTT5 support – AWS IoT Greengrass now supports sending and receiving messages from AWS IoT Core using MQTT5. For more information, see Publish AWS IoT Core MQTT messages.

Public component updates

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

Important

When you deploy a component, AWS IoT Greengrass installs the latest supported versions of all of that component's dependencies. Because of this, new patch versions of AWS-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 AWS IoT Greengrass Core software, see Update the AWS IoT Greengrass Core software (OTA).

Component Details
Greengrass nucleus

Version 2.10.0 of the Greengrass nucleus is available.

New features

  • Adds interpolateComponentConfiguration support for the empty regular expression. Greengrass now interpolates from the root config object.

  • Adds support for MQTT5.

  • Adds a mechanism for loading plugin components quickly without scanning.

  • Enables Greengrass to save disk space by deleting unused Docker images.

Bug fixes and improvements

  • Fixes an issue where rollback leaves certain configuration values in place from a deployment.

  • Fixes an issue where the Greengrass nucleus validates for an AWS domain sequence in custom non-AWS credentials and data endpoints.

  • Updates multi-group dependency resolution to re-resolve all group dependencies via AWS Cloud negotiation, instead of locking to the active version. This update also removes the deployment error code INSTALLED_COMPONENT_NOT_FOUND.

  • Updates the Greengrass nucleus to skip downloading Docker images when they already exist locally.

  • Updates the Greengrass nucleus to restart a component install step before timeout expires.

  • Additional minor fixes and improvements.
Shadow manager

Version 2.3.2 of the new shadow manager is available.

Bug fixes and improvements

Fixes an issue where shadow manager enters the BROKEN state when the local shadow database is corrupted.