AWS IoT Greengrass v2: Edge & Local Compute

1. Introduction

AWS IoT Greengrass v2 is a software that extends AWS services to edge devices, allowing them to act locally on the data they generate while still using the cloud for management, analytics, and storage. This lesson covers key concepts, installation, deployment, and best practices for using AWS IoT Greengrass v2.

2. Key Concepts

Key Definitions

**Greengrass Core**: The primary component that runs on edge devices to manage local resources and run AWS Lambda functions.
**AWS Lambda Functions**: Functions that can be executed on Greengrass Core in response to events.
**Connector**: A way to integrate with other AWS services or third-party applications.
**Subscriptions**: Define how messages are exchanged between devices, AWS services, and Lambda functions.

3. Installation

To install AWS IoT Greengrass v2, follow these steps:

Ensure that your device meets the hardware requirements (e.g., Linux-based OS).
Install the AWS CLI if not already installed.
Run the following command to install the Greengrass V2 software:

sudo apt-get install greengrass-cli

Configure the Greengrass CLI with your AWS credentials:

greengrass-cli configure

4. Deployment

Deploying a Greengrass component involves the following steps:

Create a Greengrass group in the AWS IoT console.
Define and create the Greengrass component with the appropriate configuration and code.
Deploy the component to the Greengrass group using the AWS IoT console or CLI.
Monitor the deployment status through the console or CLI.

Note: Ensure that your Greengrass Core device has internet access for configuration and updates.

5. Best Practices

Use local resources efficiently by offloading data processing to the edge.
Regularly monitor and maintain your Greengrass components for optimal performance.
Implement security best practices, such as device authentication and data encryption.
Utilize AWS CloudWatch for logging and monitoring Greengrass operations.

6. FAQ

What devices can run AWS IoT Greengrass v2?

AWS IoT Greengrass v2 can run on a variety of devices that support Linux-based operating systems. Check the AWS documentation for specific hardware requirements.

Is AWS IoT Greengrass v2 free to use?

While there are no upfront costs, you will incur charges based on the AWS services you use in conjunction with Greengrass, such as Lambda or IoT Core.

Can I use Greengrass v2 without an internet connection?

Yes, Greengrass v2 allows for local execution of Lambda functions and message processing without an internet connection. However, connectivity is needed for some management features.

7. Flowchart of Deployment Process


graph TD;
    A[Start] --> B[Create Greengrass Group];
    B --> C[Define Components];
    C --> D[Deploy Components];
    D --> E[Monitor Status];
    E --> F[End];