k8s 报错 -Unable to connect to the server: x509: certificate signed by unknown authority

执行一下命令，然后kubectl get nodes 试一下

mkdir -p $HOME/.kube

sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

sudo chown $(id -u):$(id -g) $HOME/.kube/config

如果不行，执行kubectl get nodes --insecure-skip-tls-verify 试一下