localhost 8080 was

$ kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/v0.9.1/Documentation/kube-flannel.yml The connection to the server localhost:8080 was refused - did you specify the right host or port?

出现了上面的错误，解决方案：1.6.1 The connection to the server localhost:8080 was refused

$ sudo cp /etc/kubernetes/admin.conf $HOME/ $ sudo chown $(id -u):$(id -g) $HOME/admin.conf $ export KUBECONFIG=$HOME/admin.conf

其实上面的解决方式，在初始化集群的打印信息里面就有，要求我们设置环境变量KUBECONFIG为配置文件的路径，以便后续的使用。