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<UP,BROADCAST,RUNNING,MULTICAST>mtu1500 inet6fe80::20c:29ff:fee8:8637prefixlen64scopeid0x20<link> ether00:0c:29:e8:86:37txqueuelen1000(Ethernet) RXpackets1121bytes98968(96.6KiB) RXerrors0dropped0overruns0frame0 TXpackets179bytes25233(24.6KiB) TXerrors0dropped0overruns0carrier0collisions0 lo:flags=73<UP,LOOPBACK,RUNNING>mtu65536 inet127.0.0.1netmask255.0.0.0 inet6::1prefixlen128scopeid0x10<host> looptxqueuelen0(LocalLoopback) RXpackets900bytes78372(76.5KiB) RXerrors0dropped0overruns0frame0 TXpackets900bytes78372(76.5KiB) TXerrors0dropped0overruns0carrier0collisions0
1.eno16777736代表网卡的名称，ether00:0c:29:e8:86:37代表网卡的Mac地址
2.配置网卡开始网络连接
cd/etc/system/network-scripts/ viifcfg-eno16777736
HWADDR=00:0C:29:E8:86:37 TYPE=Ethernet BOOTPROTO=dhcp 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=eno16777736 UUID=79d6c916-aab8-45e4-a163-37ae73393d26 ONBOOT=no
将ONBOOT=no改成ONBOOT=yes
3.重启网络
servicenetworkrestart
4.再执行ifconfig
eno16777736:flags=4163<UP,BROADCAST,RUNNING,MULTICAST>mtu1500 inet192.168.159.128netmask255.255.255.0broadcast192.168.159.255 inet6fe80::20c:29ff:fee8:8637prefixlen64scopeid0x20<link> ether00:0c:29:e8:86:37txqueuelen1000(Ethernet) RXpackets1699bytes140091(136.8KiB) RXerrors0dropped0overruns0frame0 TXpackets333bytes42669(41.6KiB) TXerrors0dropped0overruns0carrier0collisions0 lo:flags=73<UP,LOOPBACK,RUNNING>mtu65536 inet127.0.0.1netmask255.0.0.0 inet6::1prefixlen128scopeid0x10<host> looptxqueuelen0(LocalLoopback) RXpackets900bytes78372(76.5KiB) RXerrors0dropped0overruns0frame0 TXpackets900bytes78372(76.5KiB) TXerrors0dropped0overruns0carrier0collisions0
inet192.168.159.128代表IP地址
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