1:异常信息
kubectl get pods -n kube-system
sudo kubeadm upgrade apply --force
[root@master ~]# kubectl get pods -n kube-system
W0406 04:27:38.389718 6417 loader.go:221] Config not found: /etc/kubernetes/admin.conf
The connection to the server localhost:8080 was refused - did you specify the right host or port?
[root@master kubernetes]# sudo kubeadm upgrade apply --force
couldn't create a Kubernetes client from file "/etc/kubernetes/admin.conf": failed to load admin kubeconfig: open /etc/kubernetes/adm