查看网卡
ip addr

输出

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp101s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 80:80:80:80:80:80 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.131/24 brd 192.168.0.255 scope global noprefixroute enp101s0f0
       valid_lft forever preferred_lft forever
    inet6 fe80::fe80:fe80:fe80:fe80/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: enp101s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 80:80:80:80:80:e9 brd ff:ff:ff:ff:ff:ff
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:36:5f:9a brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0

得知 使用的网卡是 enp101s0f0

网卡配置

cd /etc/sysconfig/network-scripts

ll | grep enp101s0f0

输出
-rw-------. 1 root root 383 12月 22 10:54 ifcfg-enp101s0f0

编辑网卡，使用root用户
vim ifcfg-enp101s0f0

把ONBOOT内容改为yes
ONBOOT=yes

ONBOOT ： 系统启动时，是否激活网卡。no:不激活，yes: 激活

重启网卡应用生效
systemctl restart network

如果如上重启后，还未生效，重启系统命令reboot，重启系统