如何给Ubuntu网站绑定多个IP，怎么给Ubuntu服务器设置多IP？ Ubuntu其实只需要设置一个文件 /etc/network/interfaces 即可。
多个不同IP段的 /etc/network/interfaces 配置文件的范例如下：
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address 8.8.8.2
netmask 255.255.255.248
gateway 8.8.8.1 要注意这里，多个不同IP段，只要1个gateway配置即可，其他IP不需要配置gateway
auto eth0:0
iface eth0:0 inet static
address 8.8.8.3
netmask 255.255.255.248
auto eth0:1
iface eth0:1 inet static
address 8.8.8.4
netmask 255.255.255.248
auto eth0:2
iface eth0:2 inet static
address 8.8.8.5
netmask 255.255.255.248
auto eth0:3
iface eth0:3 inet static
address 8.8.8.6
netmask 255.255.255.248
auto eth0:4
iface eth0:4 inet static
address 6.6.6.130 注意这里，虽然这是不同的IP段，但是不需要配置gateway，只需要配置netmask即可
netmask 255.255.255.224
auto eth0:5
iface eth0:5 inet static
address 6.6.6.131
netmask 255.255.255.224
更多ip也类似配置即可。
配置文件完成后，用命令 /etc/init.d/networking restart 重启网络，不需要reboot重启服务器。 /etc/init.d/networking restart 重启网络的时候，如果你的配置文件有错误，那么他会提示你。比如IP重复了，书写错误了，等等。在执行此命令前，一定要小心检查interfaces配置文件，不然可能就把网络弄瘫痪，那时候就需要机房的工作人员去处理，十分麻烦。
/etc/init.d/networking restart错误分析案例：
[email protected]:/etc/network# /etc/init.d/networking restart
* Reconfiguring network interfaces...
/etc/network/interfaces:165: interface eth0:28 declared allow-auto twice
ifdown: couldn't read interfaces file "/etc/network/interfaces"
/etc/network/interfaces:165: interface eth0:28 declared allow-auto twice
ifup: couldn't read interfaces file "/etc/network/interfaces"
...fail!
说明eth0:28有重复，解决办法：vi interfaces找到eth0:28，删除掉重复的
[email protected]:/etc/network# /etc/init.d/networking restart
* Reconfiguring network interfaces...
/etc/network/interfaces:166: duplicate interface
ifdown: couldn't read interfaces file "/etc/network/interfaces"
/etc/network/interfaces:166: duplicate interface
ifup: couldn't read interfaces file "/etc/network/interfaces"
...fail!
说明166行有重复，解决办法：vi interfaces找到166行(set number)，删除掉重复的
[email protected]:/etc/network# /etc/init.d/networking restart
* Reconfiguring network interfaces...
/etc/network/interfaces:162: duplicate interface
ifdown: couldn't read interfaces file "/etc/network/interfaces"
/etc/network/interfaces:162: duplicate interface
ifup: couldn't read interfaces file "/etc/network/interfaces"
说明162行有重复，解决办法：vi interfaces找到166行(set number)，删除掉重复的