CentOS添加网卡

在CentOS6下，添加网卡之后，先去查看网卡的mac地址。

cat /sys/class/net/eth1/address

接下来编辑/etc/udev/rules.d/70-persistent-net.rules（应该会自动生成），加上一行eth1相关的信息。

# 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.

# PCI device 0x1022:0x2000 (pcnet32)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:32:9c:6b", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x1022:0x2000 (pcnet32)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:32:9c:75", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

最后新建/etc/sysconfig/network-scripts/ifcfg-eth1，（如果自动有了就无需新建）并输入以下代码，

DEVICE=eth1
IPADDR=IP地址
NETMASK=子网掩码
GATEWAY=网关
ONBOOT=yes

最后重启网络或者重启服务器即可。

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