Kuberbetes Debugging and Tricks
When node needs to be cleared in order to join new/old cluster
Bash
sudo kubeadm reset
sudo apt purge kubectl kubeadm kubelet kubernetes-cni -y
sudo apt autoremove
sudo rm -fr /etc/kubernetes/; sudo rm -fr ~/.kube/; sudo rm -fr /var/lib/etcd; sudo rm -rf /var/lib/cni/
sudo systemctl daemon-reload
sudo iptables -F && sudo iptables -t nat -F && sudo iptables -t mangle -F && sudo iptables -X
Force Removing Namespace
Sometimes they get stuck