Centos 7开启网卡自动获取IP的详细方法

Centos7默认安装是没有开启配置网卡信息的，无法访问外网。

下边配置打开网络自动获取Ip地址

1.查看网卡信息

执行Ifconfig

eno16777736: flags=4163 mtu 1500    inet6 fe80::20c:29ff:fee8:8637 prefixlen 64 scopeid 0x20    ether 00:0c:29:e8:86:37 txqueuelen 1000 (Ethernet)    RX packets 1121 bytes 98968 (96.6 KiB)    RX errors 0 dropped 0 overruns 0 frame 0    TX packets 179 bytes 25233 (24.6 KiB)    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73 mtu 65536    inet 127.0.0.1 netmask 255.0.0.0    inet6 ::1 prefixlen 128 scopeid 0x10    loop txqueuelen 0 (Local Loopback)    RX packets 900 bytes 78372 (76.5 KiB)    RX errors 0 dropped 0 overruns 0 frame 0    TX packets 900 bytes 78372 (76.5 KiB)    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0