Clean Up kubeadm confs (Useful for reinstallation or adjustments)

k8s-cleanUp.sh

#!/bin/bash

# Remove/clean UP
clear && echo "Seek and Remove!"
sleep 3

kubeadm reset -f
sudo rm -rf /etc/cni /etc/kubernetes /var/lib/dockershim /var/lib/etcd /var/lib/kubelet /var/run/kubernetes ~/.kube/*
iptables -F && iptables -X
iptables -t nat -F && iptables -t nat -X
iptables -t raw -F && iptables -t raw -X
iptables -t mangle -F && iptables -t mangle -X

# Restart if docker is installed
if command -v systemctl &> /dev/null && systemctl status docker &> /dev/null; then
    sudo systemctl restart docker
fi

Only for development environment.