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
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Best practices and recommendations


The following are some key best practices and recommendations to keep in mind when using VPCs:

  • Plan and design your VPC before actually implementing one. Determine the right choice of subnet that your application will need and build your VPC around it.

  • Choose your VPC's network block allocation wisely. A /16 subnet can provide you with a potential 65,534 IP addresses that rarely will get utilized. So ideally, go for a /18 (16,382 IP addresses) or a /20 (4094 IP addresses) as your VPC network choice.

  • Always plan and have a set of spare IP address capacity for your VPC. For example, consider the network block for my VPC as 192.168.0.0/18.

  • In this case, we design the subnet IP addressing as follows:

    • 192.168.32.0/19 Public Subnet

    • 192.168.64.0/19 Public Subnet spares

    • 192.168.128.0/20 Private Subnet

    • 192.168.192.0/20 Private Subnet spares

  • Remember that you cannot edit a network block's size once it is created for a VPC. The only way to change the network block is by...