---查看网卡状态

systemctl status network.service

-重启网卡

ifdown  ifcfg-eno1

ifup  ifcfg-eno1

---关闭NetworkManager

systemctl stop NetworkManager

systemctl disable NetworkManager

systemctl start network

---查看防火墙状态：

sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

setenforce 0

systemctl stop iptables.service

systemctl stop firewalld.service 

systemctl disable firewalld.service

# 停止firewalld服务

systemctl stop firewalld        

# 禁用firewalld服务

systemctl mask firewalld    

systemctl daemon-reload

---centos7的网卡重启方法：

systemctl restart network

---DNS配置文件：

cat /etc/resolv.conf

---设置主机和IP绑定信息：

cat /etc/hosts

---设置主机名：

cat /etc/hostname

---静态ip

cat /etc/sysconfig/network-scripts/ifcfg-eno1

TYPE=Ethernet

# PROXY_METHOD=none

BROWSER_ONLY=yes

BOOTPROTO=static

DEFROUTE=yes

IPV4_FAILURE_FATAL=no

# IPV6INIT=yes

# IPV6_AUTOCONF=yes

# IPV6_DEFROUTE=yes

# IPV6_FAILURE_FATAL=no

# IPV6_ADDR_GEN_MODE=stable-privacy

NAME=eno1

UUID=1697bdc3-8508-4d71-9904-75251892c7b6

DEVICE=eno1

ONBOOT=yes

IPADDR=192.168.120.208

NETMASK=255.255.255.0

GATEWAY=192.168.120.1

DNS1=192.168.120.1