linux 单网卡绑定两个ip
一、ubuntu系统：
#vi /etc/network/interfaces OR $ sudo vi /etc/network/interfaces
Modify as follows:
1 auto eth0 2 auto eth0:0 3 auto eth0:1 4 iface eth0 inet static 5 address 192.168.1.1 6 netmask 255.255.255.248 7 gateway 192.168.1.254 8 9 iface eth0:0 inet static 10 address 192.168.1.2 11 netmask 255.255.255.248 12 13 iface eth0:1 inet static 14 address 192.168.1.3 15 netmask 255.255.255.248 16 17 # add rest of alias / binds below
Save and close the file.
Now restart networking, enter: #/etc/init.d/networking restart OR $ sudo /etc/init.d/networking restart
二、centos系统：
配置IP地址：
[root@localhost network-scripts]#vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.0.2
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
配置完以后：
service network restart
修改DNS
[aeolus@db1 etc]$ vi resolv.conf
nameserver 202.96.128.68
nameserver 219.136.241.206
添加网通IP：
[root@localhost network-scripts]#vi /etc/sysconfig/etwrok-scripts/ifcfg-eth0:0
DEVICE=eth0:0 #其中的DEVICE为设备的名称，
BOOTPROTO=static #模式
ONBOOT=yes #开机启动
IPADDR=192.168.0.3 #ip addr
NETMASK=255.255.255.0 #子网掩码
如果需要再绑定多一个IP地址，只需要把文件名和文件内的DEVICE中的eth0:X加一即可。
