Linux网卡网络服务配置，绑定静态IP，子网卡配置以及DHCP动态获取IP

一、单ip网络服务

1. 打开终端，使用【cd】命令切换工作目录，切换到网络配置目录

interfaces.bak：网卡配置文件的备份

if-down.d if-post-down.d if-pre-up.d if-up.d：是网络关闭前、网络关闭后、网络建立前、网络建立后都会

到/etc/network/里运行相应目录下的脚本

2. 编辑interfaces网卡配置文件，进行eth0静态IP地址修改

vi /etc/network/interfaces 进入插入模式，进行静态IP地址配置

3. 重新启动网络服务，使ip配置生效

/etc/init.d/networking restart

4. 检查ip网络配置是否生效

5. 检查网络连通性【测试相同网段，不同网段之间需要提前添加路由】

二、子网卡

1. 按照单网卡网络服务操作步骤，先进行单口网IP配置

2. 创建需要配置子网卡【以eth0为例】，修改配置文件

root@linx:/etc/network # vim interfaces
# 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
allow-hotplug eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
network 192.168.1.0
gateway 192.168.1.1
pre-up ip addr flush dev $IFACE
auto eth0:0
allow-hotplug eth0:0
iface eth0:0 inet static
address 192.168.2.100
netmask 255.255.255.0
network 192.168.2.0

3.重启网络，检查是否生效

三、多物理网卡配置

1.查看主机所有(包括没有激活的)网络接口情况

root@linx:/etc/network # ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:0c:29:87:8a:9b
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe87:8a9b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:133 errors:0 dropped:0 overruns:0 frame:0
TX packets:113 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:18044 (17.6 KiB) TX bytes:17715 (17.2 KiB)
eth1 Link encap:Ethernet HWaddr 00:0c:29:87:8a:a5
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
eth2 Link encap:Ethernet HWaddr 00:0c:29:87:8a:af
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:13 errors:0 dropped:0 overruns:0 frame:0
TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:1376 (1.3 KiB) TX bytes:1376 (1.3 KiB)

2. 配置eth1和eth2网卡