$ vagrant up

# export IP_ADDR=10.20.9.10
# export HOST_NAME=$(hostname -s)
# kubeadm init --apiserver-advertise-address=$IP_ADDR --apiserver-cert-extra-sans=$IP_ADDR  --node-name $HOST_NAME --pod-network-cidr=192.168.0.0/16

# kubectl create -f ./calico-3.1.6.yaml

$ kubeadm token create --print-join-command

$ kubectl drain <node name> --delete-local-data --force --ignore-daemonsets
$ kubectl delete node <node name>

// on the node being removed
# kubeadm reset

// The reset process does not reset or clean up iptables rules or IPVS tables.
# iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
# ipvsadm -C

$ kubectl describe pod <pod-name>
$ kubectl logs <pod-name> [-p]
$ kubectl logs calico-node-whatever -n=kube-system -c calico-node
$ sudo journalctl -u kubelet

$ kubectl label node k8snode28 type=debugworker
$ kubectl label node k8snode28 type- // remove label

$ kubectl taint node k8snode28 type=vipworker:NoSchedule
$ kubectl taint node k8snode28 type:NoSchedule- // remove taint