debian与centos上单网卡配置多个IP

debian与contos单网卡绑定多个IP，如果是远程操作的话（如：ssh），切记要重启网卡的时候要 || ifup eth0
否则第二个IP或第二个配置文件有问题将导致网络中断,我的debian就断了….

root@debian:/etc/network# cat interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet static
        address 10.0.0.212
        netmask 255.255.255.0
        network 10.0.0.0
        broadcast 10.0.0.255
        gateway 10.0.0.1
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 10.0.0.1
allow-hotplug eth0:1
iface eth0:1 inet static
        address 10.0.0.145
        netmask 255.255.255.0
        network 10.0.0.0
        broadcast 10.0.0.255
        gateway 10.0.0.1

contos单网卡配置多个IP

[root@localhost network-scripts]# ls |grep ifcfg-eth
ifcfg-eth0
ifcfg-eth1
ifcfg-eth2
ifcfg-eth3

[root@localhost network-scripts]# cat ifcfg-eth0 
# Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
DEVICE=eth0
BOOTPROTO=none
HWADDR=xx:xx:xx:xx:xx:xx
ONBOOT=yes
NETMASK=xxx.xxx.xxx.xxx
IPADDR=xx.xx.xx.xx
GATEWAY=xx.xx.xx.xx
TYPE=Ethernet

直接cp旧的文件，然后改一下就可以了。
第一个IP是 eth0
第二个IP是 eth0:0
第三个IP是 eth0:1
以此类推
[root@localhost network-scripts]# service network restart || ifup eth0
Shutting down interface eth0:                              [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:                                [  OK  ]
Bringing up interface eth1:                                [  OK  ]
Bringing up interface eth2:                                [  OK  ]
Bringing up interface eth3:                                [  OK  ]