Book Image

Effective DevOps with AWS - Second Edition

By : Yogesh Raheja, Giuseppe Borgese, Nathaniel Felsen
Book Image

Effective DevOps with AWS - Second Edition

By: Yogesh Raheja, Giuseppe Borgese, Nathaniel Felsen

Overview of this book

The DevOps movement has transformed the way modern tech companies work. Amazon Web Services (AWS), which has been at the forefront of the cloud computing revolution, has also been a key contributor to the DevOps movement, creating a huge range of managed services that help you implement DevOps principles. Effective DevOps with AWS, Second Edition will help you to understand how the most successful tech start-ups launch and scale their services on AWS, and will teach you how you can do the same. This book explains how to treat infrastructure as code, meaning you can bring resources online and offline as easily as you control your software. You will also build a continuous integration and continuous deployment pipeline to keep your app up to date. Once you have gotten to grips will all this, we'll move on to how to scale your applications to offer maximum performance to users even when traffic spikes, by using the latest technologies, such as containers. In addition to this, you'll get insights into monitoring and alerting, so you can make sure your users have the best experience when using your service. In the concluding chapters, we'll cover inbuilt AWS tools such as CodeDeploy and CloudFormation, which are used by many AWS administrators to perform DevOps. By the end of this book, you'll have learned how to ensure the security of your platform and data, using the latest and most prominent AWS tools.
Table of Contents (15 chapters)
Title Page
Packt Upsell

Configure Auto Scaling

The purpose of the couple, Launch Configurations and Auto Scaling Groups shown below is to ensure scalability and reliability:

Scalability and reliability are described as follows:

  • Scalability: if there is an increase of requests/CPU, the system needs to scale up and add instances. In the same way, if the traffic goes down, it is necessary to remove unnecessary resources.
  • Reliability: if one instance  goes down for any reason, the Auto Scaling system automatically replaces it with a new one.

You need to start the instance quickly in order to create an image, so by using the user_data option you can also install a software program as we did during the monolith configuration at the beginning of this chapter. However, this results in an additional amount of time in which it is necessary to start a new instance. 

When you need to scale up, this is because you need to satisfy an increase in demand and therefore need to do this as soon as possible. For this reason, it is a good...