linux下配置IP

1. 相关文件

# cd /etc/network/
# vi interfaces
(以下为文件内容)
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 1.1.15.15
netmask 255.255.255.0
network 0.0.0.0
gateway 1.1.15.1

也可用相关命令：

ifconfig eth0 x.x.x.x netmask x.x.x.x
如：ifconfig eth0 1.1.1.1 netmask 255.255.0.0

2. 配置虚拟IP地址

相关命令：

ifconfig eth1:0  x.x.x.x netmask 255.255.0.0
如：ifconfig eth0:0 2.1.1.1 netmask 255.255.0.0

子网卡并不是实际上的网络接口设备，但可以作为网络接口在设备中出现。其必须依赖于物理网卡

3. 配置DNS

相关文件

# vi  /etc/resolv.conf
(以下为文件内容)
# Generated by NetworkManager
#  search localdomain
# nameserver 192.168.23.2
nameserver 114.114.114.114
nameserver 8.8.8.8

修改相应的nameserver内容即可。

若不通，则可继续修改如下文件：

# vi /etc/nsswitch.conf
(以下为相关内容)
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat
gshadow:        files

# hosts:          files mdns4_minimal [NOTFOUND=return] dns myhostname
hosts:          files dns wins
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

修改相应的hosts部分，添加dns wins即可