Book Image

AWS Certified SysOps Administrator ??? Associate Guide

By : Marko Sluga
Book Image

AWS Certified SysOps Administrator ??? Associate Guide

By: Marko Sluga

Overview of this book

AWS certifications are becoming one of the must have certifications for any IT professional working on an AWS Cloud platform. This book will act as your one stop preparation guide to validate your technical expertise in deployment, management, and operations on the AWS platform. Along with exam specific content this book will also deep dive into real world scenarios and hands-on instructions. This book will revolve around concepts like teaching you to deploy, manage, and operate scalable, highly available, and fault tolerant systems on AWS. You will also learn to migrate an existing on-premises application to AWS. You get hands-on experience in selecting the appropriate AWS service based on compute, data, or security requirements. This book will also get you well versed with estimating AWS usage costs and identifying operational cost control mechanisms. By the end of this book, you will be all prepared to implement and manage resources efficiently on the AWS cloud along with confidently passing the AWS Certified SysOps Administrator – Associate exam.
Table of Contents (26 chapters)

Creating a Lambda function

We can easily create a new Lambda function from the management console by navigating to the AWS Lambda section and execute the following steps:

  1. Click on Create function to begin the process:
  1. The Create function dialog will give us the option to select the following:
    • Author from scratch: Write our own function that will be completely custom
    • Blueprints: Use a template that AWS has provided for us to help with authoring the function
    • AWS Serverless Application Repository: A repository for predefined Lambda functions
  2. We will select the Author from scratch option, to write our own function in this scenario:

  1. In the Author from scratch section, we need to name our function, select a runtime, and create or select an existing role if we have one, so that the Lambda function will have the necessary permissions to execute the code:
  1. After the function...