linux网络相关设置

1.修改ip、网关

sudo vi /etc/network/interfaces

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# The loopback network interface

auto lo

iface lo inet loopback

# The primary network interface

auto eth0

#eth0 use dhcp

#iface eth0 inet dhcp

#eth0 use static

iface eth0 inet static

address 172.20.35.21

netmask 255.255.255.0

gateway 172.20.34.254

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

2.修改DNS

sudo vi /etc/resolv.conf

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nameserver 58.22.96.66

nameserver 210.34.48.34

domain localdomain

search localdomain

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

3.重启网络

sudo /etc/init.d/networking restart

4.如果重启网络服务出错

$ sudo service networking restart

SIOCSIFADDR: No such device eth0

这是由于udev服务在系统安装时，将网卡属性记录到本地文件中，克隆后新设备与原来存储的不一致，所以不能启动。

解决方法：删除本地文件，重启操作系统重新生成。

# Ubuntu

sudo mv /etc/udev/rules.d/70-persistent-net.rules /etc/udev/rules.d/70-persistent-net.rules.old

# Debian

sudo mv /etc/udev/rules.d/z25_persistent-net.rules /etc/udev/rules.d/z25_persistent