Release: Amazon IoT Greengrass Core v2.9.0 software update on November 15, 2022 - Amazon IoT Greengrass
Public component updates
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Release: Amazon IoT Greengrass Core v2.9.0 software update on November 15, 2022

This release provides version 2.9.0 of the Greengrass nucleus component and updates to Amazon-provided components.

Release date: November 15, 2022

Release highlights

  • Offline authentication – Amazon IoT Greengrass now supports offline authentication. You can configure your Amazon IoT Greengrass core device so that client devices can connect to a core device, even when the core device isn't connected to the cloud. For more information, see Offline authentication.

  • Subdeployments – You can now create subdeployments. You can use a subdeployment to resolve unsuccessful deployments. Each subdeployment can test a different configuration of an unsuccessful deployment on a smaller subset of devices. For more information, see Create subdeployments.

Public component updates

The following table lists Amazon-provided components 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 2.9.0 of the Greengrass nucleus is available.

New features

  • Adds the ability to create subdeployments that retry deployments with a smaller subset of devices. This feature creates a more efficient way to test and resolve unsuccessful deployments.

Bug fixes and improvements

  • Improves support for systems that don't have useradd, groupadd, and usermod.

  • Additional minor fixes and improvements.
Client device auth

Version 2.3.0 of the client device auth component is available.

New features

  • Adds support for offline authentication of client devices. With this feature, client devices can continue to connect to the core device when the core device isn't connected to the Internet.

  • Adds support for customer-provided certificate authorities (CA). Your core device uses a customer-provided CA as the root certificate to generate MQTT broker certificates.
MQTT 5 broker (EMQX)

Version 1.2.0 of the MQTT 5 broker (EMQX) component is available.

New features

Adds support for certificate chains.
Moquette MQTT broker

Version 2.3.0 of the new Moquette MQTT broker component is available.

New features

Adds support for certificate chains.
Secret manager

Version 2.1.4 of the new secret manager is available.

Bug fixes and improvements

Fixes an issue where cached secrets were being removed when secret manager is deployed and Greengrass nucleus restarts.
Stream manager

Version 2.1.2 of the new stream manager is available.

Bug fixes and improvements

Fixes an issue on Windows OS that use a non-English language.