Book Image

AWS for System Administrators

By : Prashant Lakhera
Book Image

AWS for System Administrators

By: Prashant Lakhera

Overview of this book

Amazon Web Services (AWS) is one of the most popular and efficient cloud platforms for administering and deploying your applications to make them resilient and robust. AWS for System Administrators will help you to learn several advanced cloud administration concepts for deploying, managing, and operating highly available systems on AWS. Starting with the fundamentals of identity and access management (IAM) for securing your environment, this book will gradually take you through AWS networking and monitoring tools. As you make your way through the chapters, you’ll get to grips with VPC, EC2, load balancer, Auto Scaling, RDS database, and data management. The book will also show you how to initiate AWS automated backups and store and keep track of log files. Later, you’ll work with AWS APIs and understand how to use them along with CloudFormation, Python Boto3 Script, and Terraform to automate infrastructure. By the end of this AWS book, you’ll be ready to build your two-tier startup with all the necessary infrastructure, monitoring, and logging components in place.
Table of Contents (18 chapters)
1
Section 1: AWS Services and Tools
4
Section 2: Building the Infrastructure
7
Section 3: Adding Scalability and Elasticity to the Infrastructure
11
Section 4: The Monitoring, Metrics, and Backup Layers

Discussing the various DR solutions offered by AWS

Before we discuss the various DR solutions offered by AWS, we first need to define the business impact analysis, recovery time objective (RTO), and recovery point objective (RPO) for an application and fit a DR solution to that objective. We already discussed the RTO and RPO in Chapter 10, Centralizing Cloud Backup Solution.

AWS offers four levels of DR support:

  • Backup and restore
  • Pilot light
  • Warm standby in AWS
  • Hot standby (with multi-site)

We will cover all these in detail in the following sections.

Backup and restore

This solution suits less critical applications where RTO/RPO is measured in hours. This is one of the most common solutions implemented by many AWS customers, where they store their application backup to S3 for short-term storage, and for long-term storage, to Glacier. Now compare this solution to a traditional on-premise environment where data is backed up to tape and sent off-site...