node1:192.168.56.103
node2:192.168.56.106
node3:192.168.56.111
hostnamectl set-hostname vm1、vm2、vm3
bash
systemctl start sshd
systemctl status sshd
vim /etc/hosts
192.168.56.103 vm1
192.168.56.106 vm2
:wq
ssh-keygen
ssh-copy-id root@vm1
ssh-keygen
ssh-copy-id root@vm2
scp /etc/hosts vm2:/etc/hosts
ping vm1
ping vm2
