CentOS下一张网卡绑定多个IP的方法

CentOS中所有的设备都是文件.网卡也在文件中定义.

IP的绑定也只需要更改文件.

网卡相关文件在目录: /etc/sysconfig/network-scripts

查询当前IP信息:

ifconfig:

eth0      Link encap:Ethernet  HWaddr 00:50:56:AC:6B:0F  

          inet addr:42.51.135.206  Bcast:42.51.135.255  Mask:255.255.255.0

          inet6 addr: fe80::250:56ff:fead:6b0f/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:374772 errors:0 dropped:0 overruns:0 frame:0

          TX packets:35165 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:28759089 (27.4 MiB)  TX bytes:4779278 (4.5 MiB)

在当前目录下有文件:

ifcfg-eth0

在目录下新建文件:

ifcfg-eth0:1

内容如下:

DEVICE=eth0:1

IPADDR=42.51.138.1

NETMASK=255.255.255.0

HWADDR=00:50:56:AC:6B:0F

NM_CONTROLLED=yes

ONBOOT=yes

BOOTPROTO=dhcp

TYPE=Ethernet

IPV6INIT=no

USERCTL=no

ifcfg-eth0:2

DEVICE=eth0:2

IPADDR=42.51.138.2

NETMASK=255.255.255.0

HWADDR=00:50:56:AC:6B:0F

NM_CONTROLLED=yes

ONBOOT=yes

BOOTPROTO=dhcp

TYPE=Ethernet

IPV6INIT=no

USERCTL=no

ifcfg-eth0:3

DEVICE=eth0:3

IPADDR=42.51.138.3

NETMASK=255.255.255.0

HWADDR=00:50:56:AC:6B:0F

NM_CONTROLLED=yes

ONBOOT=yes

BOOTPROTO=dhcp

TYPE=Ethernet

IPV6INIT=no

USERCTL=no

重启网卡:

service network restart

这时候再查看IP:

eth0      Link encap:Ethernet  HWaddr 00:50:56:AC:6B:0F  

          inet addr:42.51.135.206  Bcast:42.51.135.255  Mask:255.255.255.0

          inet6 addr: fe80::250:56ff:fead:6b0f/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:384344 errors:0 dropped:0 overruns:0 frame:0

          TX packets:35241 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:29462159 (28.0 MiB)  TX bytes:4791402 (4.5 MiB)

eth0:1    Link encap:Ethernet  HWaddr 00:50:56:AC:6B:0F  

          inet addr:42.51.138.1  Bcast:42.51.138.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

eth0:2    Link encap:Ethernet  HWaddr 00:50:56:AC:6B:0F  

          inet addr:42.51.138.2  Bcast:42.51.138.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

eth0:3    Link encap:Ethernet  HWaddr 00:50:56:AC:6B:0F  

          inet addr:42.51.138.3  Bcast:42.51.138.255  Mask:255.255.255.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

测试:

在其它机器上分别 ping 上面几个IP.