原文链接：https://blog.csdn.net/lsm135/article/details/51824132#commentBox
1、编辑 ifcfg-eth0 文件，vim 最小化安装时没有被安装，需要自行安装不描述。
2、修改如下内容
1 BOOTPROTO="static" #dhcp改为static 2 ONBOOT="yes" #开机启用本配置 3 IPADDR=192.168.197.131#静态IP 4 GATEWAY=192.168.197.2#默认网关 5 NETMASK=255.255.255.0#子网掩码 6 DNS1=192.168.197.2#DNS 配置
3、修改后效果
[root@root123 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 HWADDR="00:15:5D:07:F1:02" TYPE="Ethernet" BOOTPROTO="static" #dhcp改为static DEFROUTE="yes" PEERDNS="yes" PEERROUTES="yes" IPV4_FAILURE_FATAL="no" IPV6INIT="yes" IPV6_AUTOCONF="yes" IPV6_DEFROUTE="yes" IPV6_PEERDNS="yes" IPV6_PEERROUTES="yes" IPV6_FAILURE_FATAL="no" NAME="eth0" UUID="bb3a302d-dc46-461a-881e-d46cafd0eb71" ONBOOT="yes" #开机启用本配置 IPADDR=192.168.197.131#静态IP GATEWAY=192.168.197.2#默认网关 NETMASK=255.255.255.0#子网掩码 DNS1=192.168.197.2#DNS 配置
4、重启下网络服务
[root@root123 ~]# service network restart
5、查看改动后的效果，Centois 7 不再使用 ifconfig 而是用 ip 命令查看网络信息。
[root@root123 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000 link/ether 00:0c:29:b3:a8:5e brd ff:ff:ff:ff:ff:ff inet 192.168.197.131/24 brd 192.168.197.255 scope global eth0 inet 192.168.197.129/24 brd 192.168.197.255 scope global secondary eth0 inet6 fe80::20c:29ff:feb3:a85e/64 scope link valid_lft forever preferred_lft forever