Linux网络配置及排错的一般流程

*转载自运维派

首先# ping www.baidu.com发现报错未知此域名

# ping www.baidu.com

ping: unknown host www.baidu.com

之后# ping 8.8.8.8 -c 3 如果不通，则

查看域名服务器cat /etc/resolv.conf发现里面设置了谷歌的公共DNS服务（如果没有则需设置）

#cat /etc/resolv.conf

# Generated by NetworkManager

nameserver 8.8.8.8

查看网关问题：grep GATEWAY /etc/sysconfig/network-scripts/ifcfg-eth0

如果发现未设置，则增加默认网关：

如果报错:不能连接。加下面这条

# route add default gw 192.168.40.1  //

都设置好之后你会发现已经可以ping 通网络了

# ping www.baidu.com -c 3

NM_CONTROLLED=yes

PING www.a.shifen.com (103.235.46.39) 56(84) bytes of data.

64 bytes from 103.235.46.39: icmp_seq=1 ttl=44 time=348 ms

64 bytes from 103.235.46.39: icmp_seq=2 ttl=44 time=346 ms

64 bytes from 103.235.46.39: icmp_seq=3 ttl=44 time=348 ms

— www.a.shifen.com ping statistics —

3 packets transmitted, 3 received, 0% packet loss, time 2356ms

rtt min/avg/max/mdev = 346.636/347.584/348.094/0.670 ms

===================================================================================

附上一般网络配置文件所必须包含的东西/etc/sysconfig/network-scripts/ifcfg-eth0

# cat /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

HWADDR=00:0C:29:BE:56:DB

TYPE=Ethernet

UUID=5c0c914d-01ac-4543-8ffb-71cfc8f4fc60

ONBOOT=yes

BOOTPROTO=static

IPADDR=192.168.1.11

本文转发自如下链接：

http://dianel.blog.51cto.com/12170393/1906988

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