linux

 systemctl stop firewalld.service

systemctl disable firewalld.service

static

IPADDR=

GATEWAY=

NETMASK=

DNS1=119.29.29.29

70-persistent-net.rules

ifcfg-ens33

(grub)记不清了

vi /etc/selinux/config

SELINUX=disabled

ssh-keygen -t rsa

ssh-copy-id master

scp /root/.ssh/authorized_keys slave4:/root/.ssh