Centos7或Redhat7如何上网
查看并修改相关设置
拿到一台linux真机后,怎么上网是个头疼的问题,你发现明明就连上wifi或着宽带,还是上不了网,别急,按步骤跟我走~
- 第一步,查看路由设置:route -n
[[email protected] ~]$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.8.127.254 0.0.0.0 UG 600 0 0 wlp9s0b1
10.8.0.0 0.0.0.0 255.255.128.0 U 600 0 0 wlp9s0b1
172.25.2.0 0.0.0.0 255.255.255.0 U 425 0 0 br0
172.25.250.0 0.0.0.0 255.255.255.0 U 0 0 0 privbr0
172.25.254.0 0.0.0.0 255.255.255.0 U 425 0 0 br0
172.28.24.41 10.8.127.254 255.255.255.255 UGH 600 0 0 wlp9s0b1
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
发现网关有几个不为0.0.0.0,那么接下来进行第二步。
- 查看网络配置文件
cd /etc/sysconfig/network-scripts/
[[email protected] network-scripts]$ cd /etc/sysconfig/network-scripts/
[[email protected] network-scripts]$ ls
ifcfg-br0 ifdown-ippp ifup-bnep ifup-Team
ifcfg-cetc2 ifdown-ipv6 ifup-eth ifup-TeamPort
ifcfg-cetc3 ifdown-isdn ifup-ib ifup-tunnel
ifcfg-enp8s0 ifdown-ovs ifup-ippp ifup-wireless
ifcfg-fuck ifdown-post ifup-ipv6 init.ipv6-global
ifcfg-hadoop ifdown-ppp ifup-isdn keys-cetc2
ifcfg-lo ifdown-routes ifup-ovs keys-cetc3
ifcfg-NWUNET ifdown-sit ifup-plip keys-fuck
ifcfg-NWU-STUDENT ifdown-Team ifup-plusb keys-hadoop
ifdown ifdown-TeamPort ifup-post network-functions
ifdown-bnep ifdown-tunnel ifup-ppp network-functions-ipv6
ifdown-eth ifup ifup-routes
ifdown-ib ifup-aliases ifup-sit
进入到/etc/sysconfig/network-scripts/,查看下面的文件,如果有route-br0这个文件,移出该文件
mv route-br0 /
- 修改配置文件内容
在当前目录打开文件ifcfg-br0
如果有GATEWAY信息,则注释掉,没有就正常,我这里已经删掉了。
然后在修改/etc/sysconfig/nework这个文件内容,修改的方法同上,也是注释调GATEWAY信息(#GATEWAY),在GATEWAY前加#表示注释。
[[email protected] network-scripts]$ vim /etc/sysconfig/network
重启网络服务
[[email protected] network-scripts]$ systemctl restart network
此时,再查看路由设置,route -n
[[email protected] network-scripts]$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.8.0.0 0.0.0.0 255.255.128.0 U 600 0 0 wlp9s0b1
172.25.2.0 0.0.0.0 255.255.255.0 U 425 0 0 br0
172.25.250.0 0.0.0.0 255.255.255.0 U 0 0 0 privbr0
172.25.254.0 0.0.0.0 255.255.255.0 U 425 0 0 br0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
发现网关全部变为0.0.0.0,再试试连接wifi,应该就可以上网了!