Now that the code is written, save the script as start_ec2instance.py to your computer. You’ll only need one library for this example.Įc2.start_instances(InstanceIds= ) In this section, you’re going to write all of the code necessary to start an EC2 instance using the Boto3 library so open up Visual Studio Code or your favorite editor and start coding! Importing the Boto3 Libraryįirst, import the Boto3 library. Rather than having to start the instance manually, let’s build some code to start the instance. It doesn’t need to be on all of the time. Let’s say you’ve got an EC2 instance that’s only used for development purposes. Regardless if you’re using Lambda or not, you must write some code to start an EC2 instance in this example. ![]() The boto3 Python package – Install by opening up a terminal and running pip install boto3.All examples in this article will use an S3 bucket called mynewbucket. An AWS S3 bucket – For instructions on how to create an S3 bucket, check out the AWS documentation. ![]() An IAM user and role – All examples will assume you already have already created a new IAM user and role created with EC2FullAccess and LambdaFullAccess privileges.Configuring a profile using the AWS CLI creates the required profile on the computer. An AWS profile configured – The code you’ll be writing with the Boto3 Python library requires authentication to AWS.If you decide to use another code editor, the screenshots will not be the same. A code editor of your choice – All examples will be using Visual Studio Code with the Python extension installed.Python v3 – You can download and install Python from here.An AWS EC2 instance – You won’t need anything special for this tutorial.If you’d like to follow along with the tutorial, you’ll need a few key items and pieces of software to accomplish the task at hand. Creates an S3 bucket to store the Boto3 code.Creates an archive of the Boto3 code so it can be ran from Lambda.Starts an EC2 instance using the Python SDK, Boto3.You will learn how to build a Lambda function that: In this in-depth guide, you’ll create a Lambda function to run Python code to start an EC2 instance. The rest of this article will be a step-by-step tutorial. Tutorial Overview on writing AWS Lambda Python As long as it’s not being used, you don’t get charged. The code could be sitting in a Lambda Function for as long as you want. Built-in failover/fault tolerance – The servers that Lambda runs on are located across multiple availability zones in a region.Run almost any type of code – Lambda is compatible with Python, Node.JS, Ruby, Go, Java, C#, and even PowerShell.That means you don’t have to set up networking, virtual machines, storage, etc. You don’t need an operating system to run the code on – With serverless functions, you don’t need to set up an environment to run code on.You no longer have to run scripts ad-hoc. Running code based on a response or event – You can schedule code to run at any given time and as many times as you want based on nearly any AWS event.Using a serverless platform gives you some key abilities that you may not have elsewhere. ![]() Developers can deploy code and see it in action. When the underlying server requirements go out the window, it opens up more opportunities to do what developers do write code. One of the most common ways is via Python. Depending on the programming language you’re using, you’ll find a few different ways of creating a serverless application. At a high level, the term ‘serverless’ defines services that allow developers to run code “without” a server. What is Lambda?ĪWS Lambda is a serverless computing technology. AWS Lambda Functions: What’s the Hype on Serverless?īefore you get down to brass tax and start learning how to build an AWS Lambda function in Python, let’s first cover why Lambda is great and why you should do this in the first place. Stay tuned to learn how Lambda functions work and how to apply your newfound Lambda knowledge by using the Boto3 AWS Python SDK to create a Lambda function and start an EC2 instance. In this guide, you’re going to learn how to get started with AWS Lambda and, more specifically, learn how to set up your first AWS Lambda Python! Luckily, they have AWS cloud services like Amazon Web Services’ AWS Lambda functions, also known as Lambda, to let them get back to what they do best. They shouldn’t have to worry about the infrastructure running that code.
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