AWS Lambda interaction with theAWS CLI 

The AWS CLI is an open source tool developed on top of AWS SDK for Python using the Boto library, which provides commands to interact with AWS services. With the very minimum configuration, you can manage any AWS services from the CLI. It provides direct access to AWS services and you can develop shell scripts to manage your resources.

For example, if you want to upload the file to the S3 bucket, then you can do so by just a single command from the CLI:

$ aws s3 cp index.html s3://bucket-name/ 

aws s3 cp is a shell-like command that performs the multi-part file upload operation in order to complete the operation.

It also supports customization for some of the AWS services. You can see the list of AWS services supported by aws-cli by using the --help command.

Installing the AWS CLI

awscli is available to as a Python distributor package. You can easily install it with the pip command, as described in the following code:

$ pip install awscli --upgrade  

Here are the prerequisites:

• Python 2 with version 2.6.5+ or Python 3 with version 3.3+
• Unix, Linux, macOS, or Windows

Configuring the AWS CLI

awscli directly accesses AWS services but we need to configure and authenticate it in order to access AWS services.

Run the aws configure command to configure the AWS CLI with your Amazon account:

You can get the AWS access key ID and AWS secret access key from the My Security Credentials option, as shown in the following screenshot:

Let's configure the AWS Lambda function using AWS CLI.