【Linux】MAC名称修改、IP地址和MAC地址绑定

在虚拟机多网卡的环境中，有时IP会随着网卡的重新启动变得不一致，这时，就需要将IP地址和MAC进行绑定，有时也需要对网卡名称进行修改，本篇将对此进行演示。

一 软件环境

• VMware® Workstation 10.0.6
• CentOS-6.5-x86_64

二 修改MAC名称

1、查看网卡信息

[root@strong ~]# ifconfig 
eth1      Link encap:Ethernet  HWaddr 00:0C:29:7F:F9:AA  
          inet addr:10.24.32.112  Bcast:10.24.33.255  Mask:255.255.254.0
          inet6 addr: fe80::20c:29ff:fe7f:f9aa/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4097746 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2003168 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:4086085351 (3.8 GiB)  TX bytes:336689861 (321.0 MiB)

eth2      Link encap:Ethernet  HWaddr 00:0C:29:7F:F9:B4  
          inet addr:192.168.226.128  Bcast:192.168.226.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe7f:f9b4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:806 (806.0 b)  TX bytes:1978 (1.9 KiB)

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:16436  Metric:1
          RX packets:1176037 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1176037 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:493455702 (470.5 MiB)  TX bytes:493455702 (470.5 MiB)

[root@strong ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet
BOOTPROTO=none
IPADDR=10.24.32.112
PREFIX=23
GATEWAY=10.24.33.254
DNS1=10.24.2.33
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME=eth0
UUID=6bbe4c97-0f50-4c78-9be3-3242bbab17df
ONBOOT=yes
LAST_CONNECT=1523246127
[root@strong ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth2
TYPE=Ethernet
BOOTPROTO=none
IPADDR=192.168.226.128
PREFIX=24
GATEWAY=192.168.226.1
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME=eth2
UUID=18f03116-45c9-4456-a107-260702fa518d
ONBOOT=yes
LAST_CONNECT=1523246140
[root@strong ~]# 

注：以上显示发现网卡名称和实际的配置不一样。

2、查看网卡名称对应的规则配置

[root@strong ~]# cat /etc/udev/rules.d/70-persistent-net.rules 
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:cc:d9:44", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:7f:f9:aa", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:7f:f9:b4", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
[root@strong ~]# 

注：通过上面的显示得知，MAC为00:0C:29:7F:F9:AA 对应的IP相对的网卡名称应为eth0，而mac为00:0c:29:cc:d9:44的这条记录没有对应的网卡（该记录是虚拟机复制产生的）。

3、修改网卡名称

[root@strong ~]# cat /etc/udev/rules.d/70-persistent-net.rules 
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:7f:f9:aa", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:7f:f9:b4", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
[root@strong ~]#

4、重启，规则生效

[root@strong ~]# ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:0C:29:7F:F9:AA  
          inet addr:10.24.32.112  Bcast:10.24.33.255  Mask:255.255.254.0
          inet6 addr: fe80::20c:29ff:fe7f:f9aa/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15032 errors:0 dropped:0 overruns:0 frame:0
          TX packets:338 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1265597 (1.2 MiB)  TX bytes:17899 (17.4 KiB)

eth2      Link encap:Ethernet  HWaddr 00:0C:29:7F:F9:B4  
          inet addr:192.168.226.128  Bcast:192.168.226.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe7f:f9b4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:468 (468.0 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:16436  Metric:1
          RX packets:1865 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1865 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:118122 (115.3 KiB)  TX bytes:118122 (115.3 KiB)

三 IP和MAC绑定

1、修改网卡信息

[root@strong ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet
BOOTPROTO=none
IPADDR=10.24.32.112
HWADDR=00:0C:29:7F:F9:AA  --增加MAC
PREFIX=23
GATEWAY=10.24.33.254
DNS1=10.24.2.33
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME=eth0
UUID=6bbe4c97-0f50-4c78-9be3-3242bbab17df
ONBOOT=yes
LAST_CONNECT=1523246127

2、重启网卡

[root@strong ~]# service network restart
Shutting down interface eth0:  Device state: 3 (disconnected)
                                                           [  OK  ]
Shutting down interface eth2:  Device state: 3 (disconnected)
                                                           [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:  Active connection state: activated
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/6
                                                           [  OK  ]
Bringing up interface eth2:  Active connection state: activated
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/7
                                                           [  OK  ]
[root@strong ~]# 

综上，实现了网卡名称的修改和IP和MAC地址的绑定。