Getting Started with Kube #1 - Base Software

Method 1 - Docker Desktop

Easiest way is to use Docker Desktop 3.2.1 and enable kubernetes in the preferences, but if you want to see whats happening under the hood I prefer to use this old Virtualbox/Vagrant method.

Method 2 - VirtualBox Vagrant

Tested on Mac (x86_64) 11.2.2 Big Sur Virtualbox 6.1.18 Vagrant 2.2.14 Kubectl 1.16.3

First install Virtualbox, Kubectl and Vagrant from their respective websites.

Clone this repo:

1git clone

...then go into the vagrant-provisioning sub-folder and type

1vagrant up

We should see virtualbox VMs like this:

alt text
Kubernetes on three nodes in Virtualbox

Now we'll jump into the master node of the cluster to do some admin and get kubectl working with the cluster.

1vagrant ssh kmaster
3  mkdir -p $HOME/.kube
4  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
5  sudo chown $(id -u):$(id -g) $HOME/.kube/config
7cat $HOME/.kube/config 

Copy contents of the $HOME/.kube/config file inside the cluster to your dev (host) machine.

(Careful about merging these config files, to keep things simple I copy seperate versions of the config file per "cluster" I manage)

To check everything works, try running a kubectl get nodes command.

You should see something like this:

1NAME       STATUS   ROLES                  AGE   VERSION
2kmaster    Ready    control-plane,master   57m   v1.20.0
3kworker1   Ready    <none>                 54m   v1.20.0
4kworker2   Ready    <none>                 51m   v1.20.0

...and last but not least, to close down your cluster, type

1vagrant suspend

Method 3 - Minikube/Virtualbox

Tested on Mac (x86_64) 11.2.2 Big Sur Virtualbox 6.1.18

Install by doing on MacOSX:

1brew install minikube

To start a new cluster we do:

1minikube start --driver=virtualbox

This preps a new VM called Minikube which is effectively a one-node kubernetes cluster. Test kubectl again by:

1kubectl get nodes
3NAME       STATUS   ROLES                  AGE   VERSION
4minikube   Ready    control-plane,master   30s   v1.20.0

...and shutdown we do

1minikube stop