Book Image

AWS Administration - The Definitive Guide

By : Yohan Wadia, Naveen Kumar Vijayakumar
Book Image

AWS Administration - The Definitive Guide

By: Yohan Wadia, Naveen Kumar Vijayakumar

Overview of this book

AWS is at the forefront of Cloud Computing today. Many businesses are moving away from traditional datacenters and toward AWS because of its reliability, vast service offerings, lower costs, and high rate of innovation. Because of its versatility and flexible design, AWS can be used to accomplish a variety of simple and complicated tasks such as hosting multitier websites, running large scale parallel processing, content delivery, petabyte storage and archival, and lots more. Whether you are a seasoned sysadmin or a rookie, this book will provide you with all the necessary skills to design, deploy, and manage your applications on the AWS cloud platform. The book guides you through the core AWS services such as IAM, EC2, VPC, RDS, and S3 using a simple real world application hosting example that you can relate to. Each chapter is designed to provide you with the most information possible about a particular AWS service coupled with easy to follow hands-on steps, best practices, tips, and recommendations. By the end of the book, you will be able to create a highly secure, fault tolerant, and scalable environment for your applications to run on.
Table of Contents (17 chapters)
AWS Administration – The Definitive Guide
About the Author
About the Reviewer

Introducing the Elastic Load Balancer

The Elastic Load Balancer or ELB is a web service that allows you to automatically distribute incoming traffic across a fleet of EC2 instances. In simpler terms, an ELB acts as a single point of contact between your clients and the EC2 instances that are servicing them. The clients query your application via the ELB; thus, you can easily add and remove the underlying EC2 instances without having to worry about any of the traffic routing or load distributions. It is all taken care of by the ELB itself!

Coupled with Auto Scaling, ELB provides you with a highly resilient and fault tolerant environment to host your applications. While the Auto Scaling service automatically removes any unhealthy EC2 instances from its group, the ELB automatically reroutes the traffic to some other healthy instance. Once a new healthy instance is launched by the Auto Scaling service, ELB will once again re-route the traffic through it and balance out the application load as...