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Kubernetes on Ubuntu 20.04 with Vagrant

This project provides a basic setup of a Kubernetes nodes with Vagrant.

Prerequisits

  • Vagrant
  • VirtualBox

Configuration

You can change these properties in Vagrantfile:

  • CPUS = 2
  • MEMORY = "4096"
  • USER_NAME = "ubuntu"
  • PASSWORD = "ubuntu"
  • KEYMAP = "de"
  • KUBERNETES_VERSION="1.26.2"
  • KUBERNETES_DASHBOARD_VERSION="2.7.0"
  • CP_IP="192.168.50.10"
  • POD_SUBNET_CIDR="192.168.0.0/16"
  • NODE_IP_RANGE="192.168.50." # keep the last number empty
  • NUMBER_OF_NODES = 1

Container runtime

There are provisioners for CRI-O (crio) and containerd. CRI-O is used in the default setup. Choose one of the provisioners in Vagrantfile in the cp and node config. The container runtime must be the same for each node in the cluster.

Create Cluster

The creation of the cluster is as simple as executing run.sh.

Access Cluster

There are two ways to access the cluster: via kubectl or with the Kubernetes dashboard

kubectl

You can find the configuration for kubectl in provisioner/tmp/config after the provisioning the cluster is done.

Kubernetes Dashboard

You can find the token for the Kubernetes Dashboard in provisioner/tmp/admin-token.txt after the provisioning the cluster is done.

To generate a new token just run: kubectl -n kubernetes-dashboard create token admin-user

Provider

This project is tested with VirtualBox. It should be possible to use the setup with other providers as well.