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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
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.

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News on Spacelift, product updates, all IaC & DevOps

Recent posts

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.

Kubernetes Deployment YAML File with Examples
Kubernetes23 min read
Kubernetes Deployment YAML File with Examples

Learn what a Kubernetes deployment YAML file is and how to create it for different cases. See a sample deployment and other examples.

How to Use Optional Arguments in Terraform Variables
Terraform9 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.

Terraform Resources Overview – Examples & Best Practices
Terraform27 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.

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