Technical Blog

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What is Terraform, and what does it do?

HashiCorp Terraform is an open-source infrastructure as a code tool that allows you to define resources in human-readable configuration files. While you can configure deployment and management directly, you will have a much easier time using Terraform for this.  Terraform is used to create consistent resources and manage infrastructure throughout its life cycle with...

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Linux Operating Systems for Cloud Servers

Beginners Guide to cloud servers running Linux. Linux has come a long way since its inception in 1991. Today, it’s one of the most popular operating systems in the world, powering everything from massive cloud servers to desktop PCs. This guide will introduce you to Linux and show you how...

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What is VMware vSphere?

VMware vSphere is a suite of virtualization products that provides a powerful, reliable, and scalable platform for running your business-critical applications. vSphere helps you to realize the full potential of your IT infrastructure by providing comprehensive support for virtualization, management, and automation. In this article, we will give you a...

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Fixing the “Commit Message Missing Valid Issue Key” Git Error

One of your commit messages is missing valid issue key Encountering the “One of your commit messages is missing a valid issue key” error after a git push can be frustrating. Fortunately, it’s usually a simple fix. Let’s walk through the steps to resolve this issue and successfully push your...

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Move Terraform State Between Accounts

Terraform State is a way to track and manage your Terraform configurations and resources. It stores your Terraform configurations in a centralized location and makes it easy to query and visualize your state. What is Terraform State? The state file is a way to keep track of the current state...

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Terraform Plan -out: Powerful Tool for Debugging & Testing

I always seem to forget the Terraform Plan out command! Did you know you can save your plan to a file that your favorite text editor can read? If you try the default command in the man pages, the formatting is all over the place because of Terraform’s colors. Outputting...

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Portainer: How to Build a Docker Home Lab Setup

Update: Tested and Validated 30th December 2023 Portainer is a lightweight, free, open-source Docker and Kubernetes management from a Web Browser. It provides a simple and user-friendly web interface to build and manage containers, images, networks, volumes, registries, services, and nodes. Portainer is very useful for anyone learning containers, docker,...

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Yum Update on ‘end of life’ CentOS6

Note: Procedure fully tested FEB 2025 Let’s be honest, It’s nearly 2024; you shouldn’t really be using CentOS6 or RHEL 6. However, I fully appreciate you may have inherited an outdated legacy system that is desperate to upgrade. Any clean, out-of-the-box installation of Cent0S6 or RHEL6 will give you an...

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Install Oracle 19c Client on CIS RHEL.

A guide to installing Oracle 19c Client on a CIS Hardened Image of Red Hat Enterprise Linux Are you looking for an unattended installation procedure? Check our other documentation here. The Center for Internet Security (CIS) produces many security-hardened images that embed several security features into a standardized build. Using...

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