Vagrant up kubernetes cluster using Ubuntu 18.04 and kubeadm

This will spin up a 3-node, 1-master kubernetes cluster on Ubuntu 18.04 and deploy nginx in a load-balanced config. It uses https://github.com/cloudnativelabs/kube-router for the pod network.

Requirements on Fedora:

sudo dnf install vagrant vagrant-sshfs libvirt sudo gpasswd -a $USER libvirt

Usage:

vagrant up

A 'vagrant up' will spin up a new 3 node + 1 master cluster.

Once your cluster is running you can login to k8s-master and run kubectl as root:

vagrant ssh k8s-master1
sudo -i
kubectl get nodes -o wide
kubectl get pods -l app=nginx
kubectl describe service nginx-svc

To test that the default.conf is running as expected run the following commands on k8s-master1

nodePort = $(kubectl describe service nginx-svc | awk '/^NodePort:/ { print substr($3,0,5) }') curl -k -H'Host: www.example.com' http://10.4.2.11:$nodePort curl -k http://10.4.2.11:$nodePort