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)

How does CloudFormation work?

Once we provide a template to the CloudFormation service, the service stores that template in an S3 bucket. It simultaneously reads the inputs in the template and processes them in parallel. We have to take this into consideration whenever we have resources that need to be created in sequence.

To create resources in sequence, we can implement the CloudFormation DependsOn attribute. The DependsOn attribute gives us the ability to wait for a certain resource to be created before another resource creation is started. For example, we can specify a DependsOn attribute that will wait for an RDS instance to be created and available before it starts an EC2 instance creation.

Stack creation

The template...