The poroect provides helps to set up a simple Kubernetes cluster on one machine. The cluster has 3 nodes running as VirtualBox instances - one master and two workers. It is useful for testing purposes specially for the cases where more than one node is required.
The code is mainly taken from this article: https://kubernetes.io/blog/2019/03/15/kubernetes-setup-using-ansible-and-vagrant/ hovewer some corrections were also made.
Prerequisites for running the cluster
To start cluster use the following command:
vagrant up
After cluster is started use this command to ssh to master node:
vagrant ssh k8s-master
On master use kubectl utility to manage kubernetes containers. E.g. using command like this:
kubectl get pods -o wide --all-namespaces
It dumps all running containers with their node and IP information.
To stop the cluster use:
vagrant halt
It can be resumed using vagrant up after.
To completely remove the cluster use:
vagrant destroy -f