Rory  West

Rory West

1620959460

Complete Guide to Terraform AWS

We’re continuing our series on Terraform AWS with a post that breaks down the basics. The world of Terraform AWS can be described as complex — from AWS storage to AWS best practices, there’s a depth of knowledge necessary to get familiar with Terraform AWS.

Whether you’re an expert at Terraform AWS or just getting started, it’s our goal at InfraCode to provide you with clear and easy-to-understand information at every level. The number of resources out there is abundant but overwhelming. That’s why we create simplified guides that are immediately usable and always understandable.

In this article, we’ll dive into:

  • A Beginner’s Overview to Terraform AWS
  • Managing AWS Storage
  • Terraform AWS Best Practices

#aws-ec2 #aws #terraform #terraform aws

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Complete Guide to Terraform AWS
Rory  West

Rory West

1620959460

Complete Guide to Terraform AWS

We’re continuing our series on Terraform AWS with a post that breaks down the basics. The world of Terraform AWS can be described as complex — from AWS storage to AWS best practices, there’s a depth of knowledge necessary to get familiar with Terraform AWS.

Whether you’re an expert at Terraform AWS or just getting started, it’s our goal at InfraCode to provide you with clear and easy-to-understand information at every level. The number of resources out there is abundant but overwhelming. That’s why we create simplified guides that are immediately usable and always understandable.

In this article, we’ll dive into:

  • A Beginner’s Overview to Terraform AWS
  • Managing AWS Storage
  • Terraform AWS Best Practices

#aws-ec2 #aws #terraform #terraform aws

Rory  West

Rory West

1619263860

Why Terraform? How to Getting Started with Terraform Using AWS

Terraform is a tool for building, changing, and versioning infrastructure safely and efficiently. Terraform can manage existing and popular service providers as well as custom in-house solutions.

Traditional Infrastructure vs Modern Infrastructure

Traditional Infrastructure

  • Mutable
  • Operational Complexity
  • No Central Control on Infrastructure

Modern Infrastructure

  • Immutable
  • Less Operational Complexity
  • Faster time to the market
  • single point for state management

#terraform-aws #terraform #aws #aws-ec2

Ruby  Schmitt

Ruby Schmitt

1597945860

Terraform: Iterating through a Map of Lists To Define AWS Roles and Permissions

A few months ago, I was working on a Terraform module to manage all the roles and their permissions in our AWS accounts. This on the surface seems like a straight forward project, but there was a curveball that required some research, trial & error, and finesse to address.

The teams/permissions were not consistent across the AWS accounts. TeamA might have read/write access to s3 in account A, but only have read access to s3 in account B. Team A does not even exist in account C. Multiply this conundrum by 10+ teams across 10+ accounts.

In thinking about how to best tackle this issue, there were a couple bad ways to solve this that immediately come to mind:

  • Brute force — define the permission for every team in every environment.

This approach is horrible. It would have been tedious, hard to maintain, and the amount of repeated code would have been astronomical, but it would have worked.

  • Ask the business to standardize permissions.

This on the surface seems reasonable but it is not. First, your code is dictating business logic/function. Secondly, the principle of least privilege means that you should only allow enough access to perform the required job. Third, there are AWS accounts which certain teams should not have access to (e.g. secops, networking, & IT accounts). Last, the business would never agree to it.


The right approach needed to something that could account for all the variability across the accounts. Additionally, the end result needed to be clean, easy to maintain/update, and easy to use without requiring a deep understanding of how the module worked.

What I envisioned was something that allowed me to define the permissions as part of the config. This design addressed the variability issues across the accounts by allowing me to define the permissions per iteration of the module. Additionally, it was easy to understand and manage (even if you didn’t know what the module was doing).

This looked something like:

module usermap {
  source = "../modules/example-module"

  role_map_aws_policies = {
    TeamA = ["AdministratorAccess"]
    TeamB = ["AmazonS3FullAccess", "AmazonEC2FullAccess"]
    TeamC = ["AdministratorAccess"]
    TeamD = ["ReadOnlyAccess", "AmazonInspectorFullAccess"]
  }
}

#aws #aws-iam #automating-aws-iam #terraform #terraform-modules

Seamus  Quitzon

Seamus Quitzon

1601341562

AWS Cost Allocation Tags and Cost Reduction

Bob had just arrived in the office for his first day of work as the newly hired chief technical officer when he was called into a conference room by the president, Martha, who immediately introduced him to the head of accounting, Amanda. They exchanged pleasantries, and then Martha got right down to business:

“Bob, we have several teams here developing software applications on Amazon and our bill is very high. We think it’s unnecessarily high, and we’d like you to look into it and bring it under control.”

Martha placed a screenshot of the Amazon Web Services (AWS) billing report on the table and pointed to it.

“This is a problem for us: We don’t know what we’re spending this money on, and we need to see more detail.”

Amanda chimed in, “Bob, look, we have financial dimensions that we use for reporting purposes, and I can provide you with some guidance regarding some information we’d really like to see such that the reports that are ultimately produced mirror these dimensions — if you can do this, it would really help us internally.”

“Bob, we can’t stress how important this is right now. These projects are becoming very expensive for our business,” Martha reiterated.

“How many projects do we have?” Bob inquired.

“We have four projects in total: two in the aviation division and two in the energy division. If it matters, the aviation division has 75 developers and the energy division has 25 developers,” the CEO responded.

Bob understood the problem and responded, “I’ll see what I can do and have some ideas. I might not be able to give you retrospective insight, but going forward, we should be able to get a better idea of what’s going on and start to bring the cost down.”

The meeting ended with Bob heading to find his desk. Cost allocation tags should help us, he thought to himself as he looked for someone who might know where his office is.

#aws #aws cloud #node js #cost optimization #aws cli #well architected framework #aws cost report #cost control #aws cost #aws tags

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