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

About the Spacelift blog

Spacelift’s collaborative platform for infrastructure as code (IaC) enables DevOps teams to manage complex cloud infrastructures with ease. In line with our reputation as an authority on all things related to IaC management, we pride ourselves on sharing only the most precise, comprehensive, and actionable content related to our areas of expertise. See our Editorial Policy.
Terraform Force-Unlock Command : Unlocking TF State File
Terraform10 min read

Terraform Force-Unlock Command : Unlocking TF State File

What to do when your Terraform state file is locked? See how and when to use the Terraform force unlock command, including examples.

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Recent posts

How to Use Ignore_Changes Argument in Terraform Lifecycle
Terraform9 min read
How to Use Ignore_Changes Argument in Terraform Lifecycle

Learn how to use the ignore_changes argument in the Terraform lifecycle meta-arguments. See examples for tags and all changes.

How to Manage Terraform State with GitLab [Tutorial]
Terraform13 min read
How to Manage Terraform State with GitLab [Tutorial]

In this step-by-step tutorial, you’ll learn why and how to set up and use a GitLab managed Terraform state.

Terraform with Azure DevOps CI/CD Pipelines – Tutorial
Terraform14 min read
Terraform with Azure DevOps CI/CD Pipelines – Tutorial

Learn step-by-step how to implement a CI/CD Azure DevOps pipeline for Terraform. See examples and best practices.

How to Use Open Policy Agent (OPA) with Terraform [Examples]
Terraform16 min read
How to Use Open Policy Agent (OPA) with Terraform [Examples]

In this tutorial, you’ll learn what Open Policy Agent is and how to use it to write OPA policies for Terraform configurations. See examples.

Using Azure for Infrastructure as Code – Overview & Tools
General20 min read
Using Azure for Infrastructure as Code – Overview & Tools

Learn how Infrastructure as Code works on Azure and which tools to use for your IaC setup. See configuration examples and best practices.

How to Use Kubectl Port-forward in Kubernetes Applications
Kubernetes16 min read
How to Use Kubectl Port-forward in Kubernetes Applications

Learn what is Kubernetes port forwarding and how to use kubectl port-forward command. See examples including running it in the background.

Kubernetes Dashboard: Tutorial, Best Practices & Alternatives
Kubernetes22 min read
Kubernetes Dashboard: Tutorial, Best Practices & Alternatives

Learn what Kubernetes Dashboard is, and its components. See a tutorial on how to install, deploy, and access it. Check out the alternatives.

How to Use Terraform Try & Can Functions [Examples]
Terraform10 min read
How to Use Terraform Try & Can Functions [Examples]

Learn what the Terraform try() function does, syntax, and examples. See Terraform try vs. lookup. Can() function explained.

What is an Azure ARM Template? Overview, Tutorial & Examples
General17 min read
What is an Azure ARM Template? Overview, Tutorial & Examples

Learn what ARM templates (Azure Resource Manager) are and how to create and deploy them. See best practices, benefits, and examples.

Terraform File Paths – Path Module, Root and CWD
Terraform8 min read
Terraform File Paths – Path Module, Root and CWD

Take a look at Terraform file paths and learn what is the path module in Terraform. See examples.

How to Generate Images with Terraform Graph Command
Terraform7 min read
How to Generate Images with Terraform Graph Command

Discover how to use the Terraform Graph command to generate dependency graphs in Terraform. See other visualization tools you can use.

How to Use Terraform Toset Function [Examples]
Terraform5 min read
How to Use Terraform Toset Function [Examples]

Learn what is toset in Terraform, what does it do, and how to use this function alone and with the for_each meta-argument.

Terraform Coalesce Function – How to Use it & Examples
Terraform6 min read
Terraform Coalesce Function – How to Use it & Examples

Learn about the coalesce function in Terraform. See how it works and some examples. Coalesce vs. try explained.

Exit Code 127 – Fixing File or Directory Not Found Error in Kubernetes
Kubernetes11 min read
Exit Code 127 – Fixing File or Directory Not Found Error in Kubernetes

Learn what are the common causes of the exit code 127 (file or directory not found) error in Kubernetes and how to fix it.

Kubernetes Readiness Probe – Guide & Examples
Kubernetes23 min read
Kubernetes Readiness Probe – Guide & Examples

In this guide, you’ll learn when to use Kubernetes readiness probes and how to configure them. See common errors and failures and how to fix them.

Kubectl cp – How to Copy File From Pod to Local (5 Examples)
Kubernetes11 min read
Kubectl cp – How to Copy File From Pod to Local (5 Examples)

Learn how to use kubectl cp command to copy files between kubernetes pods and local systems with examples. What to do when kubectl cp won't work.

Terraform Jsonencode Function – Definition & Examples
Terraform16 min read
Terraform Jsonencode Function – Definition & Examples

Learn what does Terraform jsonencode function does and how it differs from heredoc string. See examples for variables, templatefile, and policies.

Terraform State Rm: How to Remove a Resource From State File
Terraform12 min read
Terraform State Rm: How to Remove a Resource From State File

Learn how to use the terraform state rm command to remove single and multiple resources from the Terraform state file. See use case examples.

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