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)

Components of a virtual machine instance

A virtual machine instance running in EC2 is always created from an Amazon Machine Images (AMIs) and the process of the creation of an EC2 instance is referred to as a launch. Whenever we launch an instance we also need to define the amount of CPU, memory, and disk attached to the instance and we define those characteristics using an EC2 instance type.

Amazon Machine Images (AMIs)

An AMI provides all the software required to launch an instance including the following:

  • The boot sectors and disk layout
  • The operating system
  • The cloud-init components to configure your instance at launch
  • Default block device mappings that define the volumes to be attached to the instance
  • Launch permissions...