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)

Building an ELB for EC2 instances

Now that we have taken a look at our load balancer options, we will create a simple application on EC2 instances and present it through a CLB.

Prerequisite

Before we start, we need to spin up two instances running Amazon Linux and put them in two availability zones. This way, we will demonstrate how to make an application highly available:

  1. We can follow the procedure to build an EC2 instance from the Building an EC2 instance in AWS section in Chapter 5, Managing Servers on AWS with Elastic Compute Cloud. Once created, we should see two instances running in two availability zones:
  1. We will also create a new security group to open port 80 on those instances, as we will be serving a simple...