Prepare hosts DNS Setup root@master-node:~# cat /etc/hosts 127.0.0.1 localhost 192.168.2.201 master-node 192.168.2.202 slave-node1 192.168.2.203 slave-node2 192.168.2.204 slave-node3 # The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback ff02::1 ip6-allnodes ff02::2 ip6-allrouters Add kernel modules root@master-node:~# cat …