静态配置ip

# vim /etc/network/interfaces
auto eth0
iface eth0 inet static
address 192.168.1.5
netmask 255.255.255.0
gateway 192.168.1.1

# vi /etc/resolvconf/resolv.conf.d/base
nameserver 192.168.1.1

# vi /etc/resolv.conf
nameserver 192.168.1.1

#/etc/init.d/networking restart

ifconfig eth0 动态设定ip,重启后就失效。
vim /etc/network/inteface/静态设定，重启不失效。