Aws greengrass documentation

1. What is AWS Greengrass used for?
2. How does greengrass work?
3. What is Greengrass deployment?
4. How many cores can a greengrass group have?
5. What is a greengrass component?
6. How do you trigger lambda in Greengrass?
7. Do I have to use AWS IoT Greengrass OTA updates?
8. What is greengrass nucleus?
9. Where is .AWS config?
10. How do you deploy a greengrass group?
11. How do you remove local components from greengrass?
12. How do I delete a component in greengrass?
13. How many VMs is 6 cores?
14. How many threads can run in 2 cores?
15. Can 1 core have 4 threads?
16. What are edge locations used for?
17. What is greengrass Lambda?
18. What is Amazon IoT device?
19. What does CLI (); used for?
20. What is the difference between edge location and availability zone?
21. What is the difference between AWS edge locations and local zones?
22. What is edge location vs CloudFront?
23. What is the difference between lambda and Kubernetes?
24. Why are lambdas called lambdas?
25. What is lambda in EMR?

What is AWS Greengrass used for?

AWS IoT Greengrass is an Internet of Things (IoT) open source edge runtime and cloud service that helps you build, deploy, and manage device software. Customers use AWS IoT Greengrass for their IoT applications on millions of devices in homes, factories, vehicles, and businesses.

How does greengrass work?

Greengrass secures data with authentication and authorization at both the network- and device-level. IoT devices in a Greengrass deployment communicate with each other through local networks. A business can filter and transmit only the data it wants to the cloud, which reduces data migration and storage costs.

What is Greengrass deployment?

Deployment is the process to send components and apply the desired component configuration to a destination target device (at the edge), which can be a single Greengrass core device or a group of Greengrass core devices.

How many cores can a greengrass group have?

For more information, see Configure the AWS IoT Greengrass core. A Greengrass group must contain exactly one core. Client devices (also called connected devices, Greengrass devices, or devices) are devices that connect to a Greengrass core over MQTT.

What is a greengrass component?

AWS IoT Greengrass components are software modules that you deploy to Greengrass core devices. Components can represent applications, runtime installers, libraries, or any code that you would run on a device. You can define components that depend on other components.

How do you trigger lambda in Greengrass?

To deploy a Lambda function to a core, you add the function to a Greengrass group (by referencing the existing Lambda function), configure group-specific settings for the function, and then deploy the group. If the function accesses AWS services, you also must add any required permissions to the Greengrass group role.

Do I have to use AWS IoT Greengrass OTA updates?

You can use OTA updates to install the latest version of the AWS IoT Greengrass Core software or OTA update agent software on one or more cores. With OTA updates, your core devices don't have to be physically present. We recommend that you use OTA updates when possible.

What is greengrass nucleus?

The Greengrass nucleus component ( aws. greengrass. Nucleus ) is a mandatory component and the minimum requirement to run the AWS IoT Greengrass Core software on a device. You can configure this component to customize and update your AWS IoT Greengrass Core software remotely.

Where is .AWS config?

The config file is located at ~/.aws/config on Linux or macOS, or at C:\Users\ USERNAME \.aws\config on Windows. This file contains the configuration settings for the default profile and any named profiles.

How do you deploy a greengrass group?

You can deploy a group and manage its deployments from the group's configuration page in the AWS IoT console. To open this page in the console, choose Greengrass devices , then Groups (V1), and then under Greengrass groups, choose your group. From the group configuration page, choose Deploy.

How do you remove local components from greengrass?

To remove a component from a device, where the device is no longer a member of the thing group that deploys that component, use the deployment create command of the Greengrass CLI. Specify the component to remove with the --remove argument, and specify the thing group with the --groupId argument.

How do I delete a component in greengrass?

To delete a component, click Greengrass, Components, then Click on the link for the un-desired component (e.g. aws. greengrass. JetsonDLRImageClassification ). Click, Delete version.

How many VMs is 6 cores?

A good rule of thumb that we have seen empirically is that with a dual 6 core server, you may run up to 7 virtual machines and with a quad 6 core machine, you would be able to run 15 virtual machines.

How many threads can run in 2 cores?

Each core contains a complete CPU capable of executing a thread. Many modern processors support hyperthreading: each physical core behaves as if it is actually two cores, so it can run two threads simultaneously (e.g. execute one thread while the other is waiting on a cache miss).

Can 1 core have 4 threads?

A single CPU core can have up-to 2 threads per core. For example, if a CPU is dual core (i.e., 2 cores) it will have 4 threads.

What are edge locations used for?

An edge location is where end users access services located at AWS. They are located in most of the major cities around the world and are specifically used by CloudFront (CDN) to distribute content to end user to reduce latency. It is like frontend for the service we access which are located in AWS cloud.

What is greengrass Lambda?

AWS IoT Greengrass provides a containerized Lambda runtime environment for user-defined code that you author in AWS Lambda. Lambda functions that are deployed to an AWS IoT Greengrass core run in the core's local Lambda runtime.

What is Amazon IoT device?

AWS IoT Core is a managed cloud service that lets connected devices easily and securely interact with cloud applications and other devices. AWS IoT Core can support billions of devices and trillions of messages, and can process and route those messages to AWS endpoints and to other devices reliably and securely.

What does CLI (); used for?

CLI is a command line program that accepts text input to execute operating system functions. In the 1960s, using only computer terminals, this was the only way to interact with computers. In the 1970s an 1980s, command line input was commonly used by Unix systems and PC systems like MS-DOS and Apple DOS.

What is the difference between edge location and availability zone?

Both the Edge Locations (EL) and Availability Zones (AZ) are AWS Data Centers, but EL are primarily used for caching of the data to provide better user experience with low latency, the AZ are used for hosting servers, websites, applications, softwares, Big Data processing, analytics and a wide variety of use cases.

What is the difference between AWS edge locations and local zones?

Mainly edge location is used to host the web content (Statit or Dynamic) it may be in the form of Cache or the uploaded one by a user while local zone is mainly used for infrastructure deployment that places compute, storage, database, and other select AWS services close to large population.

What is edge location vs CloudFront?

CloudFront delivers your content through a worldwide network of data centers called edge locations. When a user requests content that you're serving with CloudFront, the request is routed to the edge location that provides the lowest latency (time delay), so that content is delivered with the best possible performance.

What is the difference between lambda and Kubernetes?

Lambda invokes a given function in a run environment, which provides a secure and isolated runtime where the function code is run. AWS-managed offerings for Kubernetes provide integrations with managed offerings. Kubernetes itself has a rich partner ecosystem, offering integration with numerous other technologies.

Why are lambdas called lambdas?

Lambda (or \lambda) is the name given to anonymous functions in some languages like Python. These are functions not bound by an explicit identifier. This name is derived from Lambda calculus, a mathematical system to express computation introduced by Dr. Alonzo Church in the 1930s.

What is lambda in EMR?

Step Functions triggers the EMR Start Job Lambda function, which submits the application to EMR Serverless for processing of the ingested log files. The solution uses four S3 buckets: Kinesis Data Firehose delivery bucket – Stores the ingested application logs in Parquet file format.