All posts by Jack Roper - Infrastructure as Code Expert

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Jack Roper

Jack Roper is a highly experienced IT professional with close to 20 years of experience, focused on cloud and DevOps technologies. He specializes in Terraform, Azure, Azure DevOps, and Kubernetes and holds multiple certifications from Microsoft, Amazon, and Hashicorp. Jack enjoys writing technical articles for well-regarded websites.

License and certifications

HashiCorp Certified: Terraform Associate
CKA: Certified Kubernetes Administrator
Microsoft Certified: Azure Virtual Desktop Specialty
Microsoft Certified: Azure Developer Associate
AWS Certified Solutions Architect – Associate

How to Use Optional Arguments in Terraform Variables

Terraform12 min read

How to Use Optional Arguments in Terraform Variables

Learn how optional arguments work in Terraform and how to make a variable optional in Terraform with parameters.

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Recent posts

Terraform Resources Overview – Examples & Best Practices

Terraform26 min read

Terraform Resources Overview – Examples & Best Practices

Resources are an integral part of Terraform. Take a look at what they are, resource behavior, types, dependencies, and meta-arguments.

How to Stop and Remove Docker Containers

Docker10 min read

How to Stop and Remove Docker Containers

Learn the commands you need to stop and remove all running Docker containers on Windows, Linux, and Mac. See how to start and list containers.

How to Use Terraform Flatten Function [Examples]

Terraform8 min read

How to Use Terraform Flatten Function [Examples]

Learn what Terraform flatten function is and how to use it. See examples with a list of lists and others.

What is Terrascan? Features, Use Cases & Custom Policies

Terraform15 min read

What is Terrascan? Features, Use Cases & Custom Policies

See what Terrascan is, its features, and how to use it to scan your IaC code with use case examples. Terrascan vs Checkov vs tfsec.

How to Use Kubectl Delete Deployment in Kubernetes: Examples & Tricks

Kubernetes8 min read

How to Use Kubectl Delete Deployment in Kubernetes: Examples & Tricks

Learn how to use kubectl delete deployment command for deleting Kubernetes deployments. See examples for namespaces and multiple deployments.

How to Deploy AWS Auto Scaling Group with Terraform

Terraform11 min read

How to Deploy AWS Auto Scaling Group with Terraform

Learn what Autoscaling Groups are and how to manage and deploy AWS Auto Scaling Group with Terraform. See example.

How to Use Terraform Merge Function – Examples

Terraform7 min read

How to Use Terraform Merge Function – Examples

See how to use Terraform merge function with maps, lists of objects, lists of maps and tags. Take a look at the examples.

Terraform Map Variable – What It is & How to Use

Terraform15 min read

Terraform Map Variable – What It is & How to Use

What is a map variable in Terraform? See examples. The difference between map(string) and map(object).

Terragrunt Tutorial – Getting Started & Examples

Terraform22 min read

Terragrunt Tutorial – Getting Started & Examples

What is Terragrunt, how does it work, and what are its features? Learn how to install and set up the configuration. See use cases and examples.

How to Create & Use Gitignore File With Terraform

Terraform5 min read

How to Create & Use Gitignore File With Terraform

Learn what gitignore is, how to use it with Terraform, and which Terraform files you can include in .gitignore. See example.

How to Create AWS IAM Role with Terraform [Step-by-Step]

Terraform12 min read

How to Create AWS IAM Role with Terraform [Step-by-Step]

In this step-by-step tutorial, you'll learn how to create an AWS IAM Role using Terraform with AWS Terraform provider. See an example.

Terraform Target Flag: How to Target Resources in Terraform

Terraform7 min read

Terraform Target Flag: How to Target Resources in Terraform

Learn what Terraform flag option is and how to use it with modules and plan, apply, and destroy commands. See examples and when to avoid using this flag.

What is TFLint and How to Lint Your Terraform Code

Terraform13 min read

What is TFLint and How to Lint Your Terraform Code

Learn what TFLint is and how to use it with examples. See the details of the .tflint.hcl file. Look into linting, what it is, and why to lint your Terraform code.

What is Checkov? Features, Use Cases & Examples

Terraform18 min read

What is Checkov? Features, Use Cases & Examples

Learn what Checkov is, what are its key features and how to run Checkov scans with Terraform, Kubernetes, Helm, and Kustomize. See examples.

Azure Cost Management – Best Practices & Tools

Azure16 min read

Azure Cost Management – Best Practices & Tools

Learn what Azure cost management and billing is and how to use it. See best practices, tools, and different factors that can affect Azure's cost.

Using Terraform Helm Provider to Deploy Applications

Terraform8 min read

Using Terraform Helm Provider to Deploy Applications

Learn what Terraform Helm provider is, how to declare it, and how to use it to deploy Helm charts in Kubernetes with Terraform. See examples.

Terraform Datadog Provider – How to Manage & Examples

Terraform9 min read

Terraform Datadog Provider – How to Manage & Examples

What is Datadog, and how to manage it with Terraform. See examples of how to create Datadog monitors and monitor automation using Terraform.

What is Kubernetes Load Balancer? Configuration Example

Kubernetes15 min read

What is Kubernetes Load Balancer? Configuration Example

Kubernetes load balancer service definition and types. Learn how to set and configure a load balancer and best practices.

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