MF
kube01:~# ls -al /etc/kubernetes/ssl/kubelet-*
-rw------- 1 root root 1265 May 20 17:03 /etc/kubernetes/ssl/kubelet-client-2019-05-20-17-03-45.pem
lrwxrwxrwx 1 root root 58 May 20 17:03 /etc/kubernetes/ssl/kubelet-client-current.pem -> /etc/kubernetes/ssl/kubelet-client-2019-05-20-17-03-45.pem
-rw------- 1 root root 1301 May 20 17:04 /etc/kubernetes/ssl/kubelet-server-2019-05-20-17-04-20.pem
lrwxrwxrwx 1 root root 58 May 20 17:04 /etc/kubernetes/ssl/kubelet-server-current.pem -> /etc/kubernetes/ssl/kubelet-server-2019-05-20-17-04-20.pem