:~$ sudo kubectl get nodes
The connection to the server 127.0.0.1:6443 was refused - did you specify the right host or port?
:~$ telnet 127.0.0.1 6443
:~$ sudo ufw disable
systemctl start kubelet
:~$: sudo swapon --show
NAME TYPE SIZE USED PRIO
/swap.img file 1.9G 4.5M -2
:~$: sudo swapoff -a
systemctl start kubelet
:~$ vi /etc/fstab