Basic Docker Concepts and Terms: Docker Container: A runtime instance of a Docker image. Docker Image: A lightweight, stand-alone, executable package that includes everything needed to run a piece of software. Dockerfile: A text document that cont...
In this article, I will demonstrate how to upgrade a Kubernetes cluster on CentOS and explore what happens when attempting to update the Kubernetes version by two versions higher at once. Prerequisites: A functioning Kubernetes cluster. A user with...
How to make Terraform variables optional in resources, especially for attributes in object variables? If you use Terraform modules with other configuration automation tools (e.g. Terragrunt or Ansible) to build your infrastructure, you may need to wr...
