Bootstrap a local 3 node Kubernetes cluster with a single command and the help of Vagrant, Ansible and Kubeadm. Because Ansible will run as a local installation on the remote machines, it's also possible to create the cluster on a Windows host.
vagrant up
That's it! Vagrant will start provisioning the cluster starting with the control plane node and afterwards the 2 worker nodes. Because we start from a vanilla Debian 11 (Bullseye) box and we also have to install and run Ansible on every machine, it can take a while for all 3 machines and the cluster to be ready. On my home machine it takes about 15 minutes for the cluster to be up and running.
The recommended hardware specs for a Kubernetes cluster are 2 GB of RAM and 2 CPUs. With 2 CPUs set on the boxes I had issues with the controller manager and the scheduler always restarting after some time. With 3 CPUs per box everything works fine for me. Maybe it'll work for you with 2 CPUs. Have a try.
vagrant ssh controlplane
Afterwards you can work with the cluster using kubectl.
vagrant destroy -f
| Name | IP address |
|---|---|
| controlplane | 192.168.111.11 |
| worker-1 | 192.168.111.12 |
| worker-2 | 192.168.111.13 |
CIDR: 192.168.0.0/16