Install AWS.Tools module for PowerShell on AWS EC2 using user data and Terraform

I was under the impression that all AWS EC2 instances have the latest version of AWS CLI installed. So, I was in for a pretty shock when I discovered that is not always the case. However, I was required to use the AWS CLI, so I automated the installation with the EC2 user data script … Continue reading Install AWS.Tools module for PowerShell on AWS EC2 using user data and Terraform

Manage sensitive variables in AWS EC2 user data with Terraform

If you have worked with EC2 user data, you'd have noticed a shortcoming in the approach  -the inability to pass command-line arguments to the user data script at run time. Let me explain why I believe that to be a problem. User data is a capability associated with an AWS EC2 instance as part of … Continue reading Manage sensitive variables in AWS EC2 user data with Terraform

Attach IAM role to AWS EC2 instance using Terraform

I have a fair level of understanding about the relationship between AWS IAM policy, role, user, and group. I have also implemented the concept of assumed-role and the trusted and trusting account association. You can read more about that at -Creating IAM assume-role relationship between two AWS accounts. So, when I heard of EC2s being … Continue reading Attach IAM role to AWS EC2 instance using Terraform

Working with AWS EC2 user data and Terraform

User data is a feature that allows customization of AWS EC2 (virtual machine) when it is created and (if desired) also with each restart after they are provisioned.As we all know, AWS EC2 (virtual machines) is the legacy approach to hosting applications in the world of containers. Last year I attended a webinar sponsored by … Continue reading Working with AWS EC2 user data and Terraform

Strengthen security posture with Terraform and AWS IAM to manage AWS cloud resources

Is Terraform using an AWS IAM administrator user credential to manage AWS resources?

Terraform uses AWS IAM user credentials to manage resources in the AWS cloud. It does so by utilizing the secret key and access key of the IAM user. Hence, Terraform's ability to manage (create/update/delete) resources depend on the permission associated with the AWS IAM user. When I started working with Terraform to manage resources in … Continue reading Strengthen security posture with Terraform and AWS IAM to manage AWS cloud resources

Terraform remote state file as a data source to support a layered IAC approach

A few months back, I came across an interesting concept of deploying infrastructure in a layered fashion, and I wish I had the URL saved to refer to it again. Nevertheless, the gist of the idea was that you could build an application product environment by deploying layer after layer of infrastructure. A layer of … Continue reading Terraform remote state file as a data source to support a layered IAC approach

VPC Peering using Terraform across separate AWS accounts

A few weeks ago, I created a peering relationship between two VPCs that belonged to separate AWS accounts using Terraform. This note captures my learning from that exercise. But before I do so, let me briefly give an overview of VPC peering and then walk through the process of creating one. Per AWS, "Amazon Virtual … Continue reading VPC Peering using Terraform across separate AWS accounts

CI/CD of Terraform workspace with YAML based Azure Pipelines

This note focuses on using Azure DevOps with Terraform workspace to automate the ideas discussed in the previous two notes (i) CI/CD using Terraform and Azure Pipelines -ideation and (ii) Terraform workspace with multiple AWS accounts. If you are new to Azure DevOps, I would suggest you familiarize yourself with either Azure DevOps build and … Continue reading CI/CD of Terraform workspace with YAML based Azure Pipelines