```shell
kubectl delete ns --grace-period=0 –force 

kubectl get namespace kube-system -o json >tmp.json

kubectl proxy

curl -k -H "Content-Type: application/json" -X PUT --data-binary @tmp.json http://127.0.0.1:8001/api/v1/namespaces/kube-system/finalize

kubectl -n kube-system  get pods | grep Evicted |awk '{print$1}'|xargs kubectl -n argo delete pods
```

```shell
kubeadm reset -f
modprobe -r ipip
lsmod
rm -rf ~/.kube/
rm -rf /etc/kubernetes/
rm -rf /etc/systemd/system/kubelet.service.d
rm -rf /etc/systemd/system/kubelet.service
rm -rf /usr/bin/kube*
rm -rf /etc/cni
rm -rf /opt/cni
rm -rf /var/lib/etcd
rm -rf /var/etcd
yum clean all
yum remove kube*
```