k8s 集群 The connection to the server localhost:8080 was refused - did you specify the right host or port?

wuming@master kubernetes]$ sudo kubectl get nodes
出现 The connection to the server localhost:8080 was refused - did you specify the right host or port?

1.echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> profile

1. 执行 export KUBECONFIG=/etc/kubernetes/admin.conf这个文件下根本没有admin.conf

2. Run these commands solved this issue:
   mkdir -p $HOME/.kube
   sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
   sudo chown $(id -u):$(id -g) $HOME/.kube/config
   这个还没有尝试

3. 启动顺序不对
   systemctl start etcd
   systemctl start docker
   systemctl start kube-apiserver
   systemctl start kube-controller-manager
   systemctl start kube-scheduler
   systemctl start kubelet
   systemctl start kube-proxy

   5.copy /root 下的admin.conf 到 work 也是export 环境变量

   请问大佬这个如何解决，为何我的admin.conf 没有

首先将8080端口开放出来再试一下。

创建一个配置文件，配置文件里面指定8080端口，再不行检查防火墙设置