linux网卡

当网卡配置脚本处于 DHCP 获取 IP 时。

cat ifcfg-e3

DEVICE=e3 HWADDR=00:0c:29:ca:1c:7a TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=dhcp IPV6INIT=no USERCTL=no PEERDNS=yes

||||||||||||||||||||||||||||||||||||||||||||||||||||||||

# cat /etc/udev/rules.d/70-persistent-net.rules

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:ca:1c:66", ATTR{type}=="1", KERNEL=="eth*", NAME="e1" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:ca:1c:70", ATTR{type}=="1", KERNEL=="eth*", NAME="e2"

# /etc/init.d/udev-post start

Retrigger failed udev events                               [  OK  ]

# cat /etc/sysconfig/network-scripts/ifcfg-e1

DEVICE=e1 HWADDR=00:0c:29:ca:1c:66 TYPE=Ethernet # UUID= ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=none IPADDR=192.168.136.128 NETMASK=255.255.255.0 DNS2=111.11.11.1 GATEWAY=192.168.136.1 DNS1=8.8.8.8 IPV6INIT=no USERCTL=no #00:0c:29:ca:1c:66 e1 #00:0c:29:ca:1c:70 e2

# cat /etc/sysconfig/network-scripts/ifcfg-e2

DEVICE=e2 HWADDR=00:0c:29:ca:1c:70 TYPE=Ethernet # UUID= ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=none IPADDR=192.168.136.127 NETMASK=255.255.255.0 #DNS2=111.11.11.1 #GATEWAY=192.168.136.1 #DNS1=8.8.8.8 IPV6INIT=no USERCTL=no #00:0c:29:ca:1c:66 e1 #00:0c:29:ca:1c:70 e2

* 直接生效

----------------------------------------------------

||||||||||||||||||||||||||||||||||||||||||||||||||||||||

添加一个虚拟网络接口

# cd /etc/sysconfig/network-scripts

# cp ifcfg-e3 ifcfg-e3：1

# vi ifcfg-e3:1

修改成：

DEVICE=e3:1 ONPARENT=yes

||||||||||||||||||||||||||||||||||||||||||||||||||||||||

网卡脚本的 DNS 可以统一设定:

$ cat /etc/sysconfig/network

HOSTNAME=h1 DNS1=111.11.11.1 DNS2=8.8.8.8 #HOSTNAME=h1.sunny.com #SEARCH=sunny.com

||||||||||||||||||||||||||||||||||||||||||||||||||||||||

单网卡多IP

DEVICE=e2 HWADDR=00:0c:29:ca:1c:70 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=none #IPADDR=10.97.57.3 IPADDR1=192.168.3.240 IPADDR2=10.97.57.5 NETMASK1=255.255.0.0 NETMASK2=255.255.255.0 DNS1=111.11.11.1 GATEWAY=10.97.57.1 DNS2=8.8.8.8 IPV6INIT=no USERCTL=no

本文出自 “小崔的实验笔记” 博客，谢绝转载！