Kubernetes x509 certificate signed by unknown authority- Kubernetes

可能是因為root缺少配置，或者是因為當前配置是舊的關係，用root輸入以下指令即可

rm -rd ~/.kube
mkdir -p ~/.kube
cp -i /etc/kubernetes/admin.conf ~/.kube/config
echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> ~/.bash_profile
source ~/.bash_profile