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

Automating the application load balancer using Terraform

In the last section, we created an application load balancer using the AWS console. In this section, we will see how to automate the entire process using Terraform. These are the steps you need to follow:

  1. It always starts with boilerplate syntax where you specify the provider (for example, AWS in our case) and the region (such as us-west-2 in Oregon) where you want to create your resource:
    provider "aws" {  region = "us-west-2"}
  2. In the next step, we are going to create the application load balancer. Here, we will use the Terraform aws_alb resource to create an application load balancer. To create an application load balancer, we need to pass the following parameters to the aws_alb resource:

    - name: The name of your load balancer. Please provide some meaningful name (for example, prod-alb-new-lb), otherwise Terraform will autogenerate a name beginning with tf-lb.

    - subnets: These are the...