Setting Up Sander van Vugt’s CKA course With VirtualBox Notes

I want to follow Sander van Vugt’s CKA course on a home linux box using virtualbox for controller/worker nodes.

This repo seems to contain the right goodies to start with: https://github.com/jeromeza/k8s_cka_vagrant

tl;dr – https://github.com/gwynforthewyn/k8s_cka_vagrant and https://github.com/gwynforthewyn/cka contain the patches to get this working

What Was The Investigation?

  • cloned the upstream repos to my linux box
  • realise I don’t have virtualbox installed. Install virtualbox with dnf install virtualbox . Try to start virtualbox and receive a nice error:
; virtualbox                                                                                                                                                                                                                               
WARNING: The vboxdrv kernel module is not loaded. Either there is no module
         available for the current kernel (5.16.16-200.fc35.x86_64) or it failed to
         load. Please try load the kernel module by executing as root

           dnf install akmod-VirtualBox kernel-devel-5.16.16-200.fc35.x86_64
           akmods --kernels 5.16.16-200.fc35.x86_64 && systemctl restart vboxdrv.service

         You will not be able to start VMs until this problem is fixed.
Qt WARNING: could not connect to display 
Qt FATAL: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

zsh: IOT instruction (core dumped)  virtualbox

Author: jamandbees

There's just this whole, like, wha? Out there in the world, y'know? The jam and the bees, please.

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