1. 前言Ubuntu安装完毕之后，如果发生异常宕机，可能导致网卡的逻辑名出现异常，或者和之前的不一致。如果你的应用处理是依据逻辑名，那么有可能数据会传输到非预期的网卡接口上去，笔者今天要整理的是Ub
1. 前言
Ubuntu安装完毕之后，如果发生异常宕机，可能导致网卡的逻辑名出现异常，或者和之前的不一致。如果你的应用处理是依据逻辑名，那么有可能数据会传输到非预期的网卡接口上去，笔者今天要整理的是Ubuntu14.04的网卡逻辑名修改，笔者自己把这叫做”网卡固话“---网卡逻辑名固定化。
2. 网卡信息查询
查看已启用的网卡
root@ubuntu:~# ifconfigeth0 Link encap:Ethernet HWaddr fa:16:3e:40:11:12 inet addr:172.18.0.9 Bcast:172.18.0.255 Mask:255.255.255.0 inet6 addr: fe80::f816:3eff:fe40:1112/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1400 Metric:1 RX packets:1327966 errors:0 dropped:0 overruns:0 frame:0 TX packets:22911 errors:0 dropped:0 overruns:0 carrier:0 RX bytes:170759301 (170.7 MB) TX bytes:1282555 (1.2 MB)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:65536 Metric:1 RX packets:2725810 errors:0 dropped:0 overruns:0 frame:0 TX packets:2725810 errors:0 dropped:0 overruns:0 carrier:0 RX bytes:295593236 (295.5 MB) TX bytes:295593236 (295.5 MB)上述HWaddr后面为eth0接口的MAC地址查看已有逻辑名
root@ubuntu:~# ls /sys/class/net/ eth0 lo 查看指定网卡MAC地址
root@ubuntu:~# ifconfig eth0 eth0 Link encap:Ethernet HWaddr fa:16:3e:40:11:12 inet addr:172.18.0.9 Bcast:172.18.0.255 Mask:255.255.255.0 inet6 addr: fe80::f816:3eff:fe40:1112/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1400 Metric:1 RX packets:1328066 errors:0 dropped:0 overruns:0 frame:0 TX packets:23012 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:170767973 (170.7 MB) TX bytes:1293097 (1.2 MB) 3.生成配置文件
root@ubuntu:~# export INTERFACE="eth0" root@ubuntu:~# export MATCHADDR="fa:16:3e:40:11:12" root@ubuntu:~# /lib/udev/write_net_rules root@ubuntu:~# ls /etc/udev/rules.d/ 70-persistent-net.rules README 首先引入两个变量INTERFACE，MATCHADDR，然后执行write_net_rules,查看生成的文件70-persistent-net.rules文件内容如下，删除KERNEL项，并修改NAME值。
# This file was automatically generated by the /lib/udev/write_net_rules # program, run by the persistent-net-generator.rules rules file. # # You can modify it, as long as you keep each rule on a single # line, and change only the value of the NAME= key. SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="fa:16:3e:40:11:12", KERNEL=="eth*", NAME="eth0" 修改后如下
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="fa:16:3e:40:11:12", NAME="new-logicalname" 4.禁用源网卡逻辑名规则文件
root@ubuntu:/etc/udev/rules.d# cd /lib/udev/rules.d/ root@ubuntu:/lib/udev/rules.d# mv 75-persistent-net-generator.rules 75-persistent-net-generator.rules.disabled 5.修改网卡配置
原网卡配置
root@ubuntu:~# vim /etc/network/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 auto eth0 iface eth0 inet dhcp 修改为如下
# The primary network interface auto new-logicalname iface new-logicalname inet dhcp 不需要重启网卡，直接重启系统
6.重启主机，查看新的网卡逻辑名
root@ubuntu:~# ls /sys/class/net/ lo new-logicalname root@ubuntu:~# ifconfig new-logicalname new-logicalname Link encap:Ethernet HWaddr fa:16:3e:40:11:12 inet addr:172.18.0.9 Bcast:172.18.0.255 Mask:255.255.255.0 inet6 addr: fe80::f816:3eff:fe40:1112/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1400 Metric:1 RX packets:399 errors:0 dropped:0 overruns:0 frame:0 TX packets:357 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:36646 (36.6 KB) TX bytes:55027 (55.0 KB) 