K8S初始化后，worker节点加了master节点，在master执行kubectl get nodes 报错，这个原因看是路径的问题导致

[root@k8s-master01 ~]# kubectl get nodes
E1114 16:28:52.032089    2254 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
E1114 16:28:52.032313    2254 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
E1114 16:28:52.033599    2254 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
E1114 16:28:52.034881    2254 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
E1114 16:28:52.036130    2254 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
The connection to the server localhost:8080 was refused - did you specify the right host or port?

在/etc/kubernetes目录下，通过kubectl --kubeconfig命令执行，是没有问题

一个老哥告诉我修改定制kubernetes的登录权限，解决了：

mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config