I’ve also registered the system with Red Hat as part of the installation process. I’ve created a regular user account called “user1” and added it to the wheel group to enable sudo. When installing RHEL8 I’ve simply chosen the default installation profile for a server with a GUI. To ensure that I have enough resources to run minikube and some containers, I’ve created a VM with 4 vCPUs, 4GB RAM and 100GB of disk space. When you’re preparing the VM (and before installing RHEL), simply ensure that the option to expose hardware assisted virtualisation to the guest OS is enabled as shown below: This is referred to as a nested hypervisor environment and is actually easy to do in VMware. Since we’re are going to need to install KVM inside this VM, that is to say, running a hypervisor in a VM that is already running on another hypervisor, we’ll need to configure the VM so that the virtualisation extension of the physical CPU are exposed to the VM. Here, I’ve built a RHEL server as a virtual machine on a VMware ESXi server as my minikube platform. minikube runs a single-node Kubernetes cluster on your personal computer (including Windows, macOS and Linux PCs) so that you can try out Kubernetes, or for daily development work. The solution uses minikube, a tool that lets you run Kubernetes locally. In this post I’ll be showing you how to install a simple Kubernetes system that can be used for training purposes.
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