https://blog.csdn.net/zenglingmin8/article/details/117756327
https://blog.csdn.net/weixin_43114954/article/details/119153903
#添加 尽量不调度 PreferNoSchedule
kubectl taint nodes k8s-master node-role.kubernetes.io/master:PreferNoSchedule
#去除污点NoSchedule,最后一个"-"代表删除
kubectl taint nodes k8s-master node-role.kubernetes.io/master:NoSchedule-