k8s-master 重启之后报错
The connection to the server 192.168.1.30:6443 was refused - did you specify the right host or port?
mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config
export KUBECONFIG=/etc/kubernetes/admin.conf