Logging and monitoring

This page was generated from content adapted from the AWS Developer Guide

Monitor Greengrass logs

• Note The Greengrass core device's token exchange role must allow the core device to write to CloudWatch Logs, as shown in the following example IAM policy. If you installed the AWS IoT Greengrass Core software with automatic resource provisioning, your core device has these permissions.

Get deployment and component health status notifications

• Note Amazon EventBridge is an event bus service that you can use to connect your applications with data from a variety of sources, such as Greengrass core devices and deployment and component notifications. For more information, see What is Amazon EventBridge? in the Amazon EventBridge User Guide.

• Note To allow Amazon EventBridge to call your target topic, you must add a resource-based policy to your topic. For more information, see Amazon SNS permissions in the Amazon EventBridge User Guide.

Check core device status

• Note AWS IoT Greengrass relies on individual devices to send status updates to the AWS Cloud. If the AWS IoT Greengrass Core software isn't running on the device, or if device isn't connected to the AWS Cloud, then the reported status of that device might not reflect its current status. The status timestamp indicates when the device status was last updated. Core devices send status updates at the following times: When the AWS IoT Greengrass Core software starts When the core device receives a deployment from the AWS Cloud When the status of any component on the core device becomes BROKEN At a regular interval that you can configure, which defaults to 24 hours For AWS IoT Greengrass Core v2.7.0, the core device sends status updates when local deployment and cloud deployment occurs