centos7 固定ip

cd /etc/sysconfig/network-scripts/ifcfg-ens33

修改如下

BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.72.66
NETMASK=255.255.255.0
GATEWAY=192.168.72.2

centos6的网卡重启方法：service network restart
centos7的网卡重启方法：systemctl restart network

关闭防火墙并设置开机不启动
查看防火墙状态：systemctl status firewalld.service
关闭：systemctl stop firewalld
开启：systemctl start firewalld
开机自动关闭：systemctl disable firewalld
开机自动启动：systemctl enable firewalld