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

Choosing an AWS bucket name and how to create a random bucket name

An Amazon S3 bucket name must be globally unique, as the S3 namespace is shared with all AWS accounts. This means no two buckets should have the same name.

By using Terraform, you can achieve this using the random_id resource. byte_length defines the number of random bytes to produce, and in this case, there are 8 bits of random bytes, which means it will add 8 extra bits at the end of bucket, as illustrated in the following code snippet:

resource "random_id" "my-random-id" {
byte_length = 8
}

Then, you can pass random_id to the aws_s3_bucket resource to add randomness to the bucket, as illustrated in the following code snippet:

resource "aws_s3_bucket" "my-bucket" {
bucket = "my-bucket-${random_id.my-random-id.dec}"
}

By choosing the random_id resource, you can simplify and automate your S3 bucket random bucket name creation.