AWS IoT Greengrass Version 1 entered the extended life phase on June 30, 2023. For more information, see the AWS IoT Greengrass V1 maintenance policy. After this date, AWS IoT Greengrass V1 won't release updates that provide features, enhancements, bug fixes, or security patches. Devices that run on AWS IoT Greengrass V1 won't be disrupted and will continue to operate and to connect to the cloud. We strongly recommend that you migrate to AWS IoT Greengrass Version 2, which adds significant new features and support for additional platforms.
Verify the Lambda function is running on the core device
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From the navigation pane of the AWS IoT console
, under Test, choose MQTT test client. -
Choose the Subscribe to topic tab.
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Enter
hello/worldinto the Topic filter and expand the Additional configuration. -
Enter the information listed in each of the following fields:
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For Quality of Service, choose 0.
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For MQTT payload display, choose Display payloads as strings.
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Choose Subscribe.
Assuming the Lambda function is running on your device, it publishes messages
similar to the following to the hello/world topic:
Although the Lambda function continues to send MQTT messages to the
hello/world topic, don't stop the AWS IoT Greengrass daemon. The remaining
modules are written with the assumption that it's running.
You can delete the function and subscription from the group:
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On the groups configuration page, under the Lambda functions tab, select the Lambda function you want to remove and choose Remove.
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On the groups configuration page, under the Subscriptions tab, choose the subscription, and then choose Delete.
The function and subscription are removed from the core during the next group deployment.
