CentOS 7 修改网卡名称

5t4we

方法一：禁用该可预测命名规则
1、对于这一点，你可以在启动时传递“net.ifnames=0 biosdevname=0 ”的内核参数。这是通过编辑/etc/default/grub并加入“net.ifnames=0 biosdevname=0 ”到GRUBCMDLINELINUX变量来实现的。

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cat /etc/sysconfig/grub       GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="ipv6.disable=1 crashkernel=auto rhgb quiet net.ifnames=0 biosdevname=0" GRUB_DISABLE_RECOVERY="true"

2、运行命令grub2-mkconfig -o /boot/grub2/grub.cfg 来重新生成GRUB配置并更新内核参数。
3、reboot


方法二：修改rules文件
1、文件没有的话可以手动创建，后缀是.rules，按照顺序将MAC地址与网卡名称绑定

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cat /etc/udev/rules.d/70-persistent-ipoib.rules # This is a sample udev rules file that demonstrates how to get udev to # set the name of IPoIB interfaces to whatever you wish.  There is a # 16 character limit on network device names though, so don't go too nuts # # Important items to note: ATTR{type}=="32" is IPoIB interfaces, and the # ATTR{address} match must start with ?* and only reference the last 8 # bytes of the address or else the address might not match on any given # start of the IPoIB stack # # Note: as of rhel7, udev is case sensitive on the address field match # and all addresses need to be in lower case. # # ACTION=="add", SUBSYSTEM=="net", DRIVERS=="?*", ATTR{type}=="32", ATTR{address}=="?*00:02:c9:03:00:31:78:f2", NAME="mlx4_ib3" ACTION=="add", SUBSYSTEM=="net", DRIVERS=="?*", ATTR{type}=="32", ATTR{address}=="?*00:0c:29:7a:1e:16", NAME="eth0"

2、修改网卡配置文件，配置DEVICE和NAME，并加入HWADDR
注：DEVICE、NAME和HWADDR 要和.rules 里面相对应

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cat /etc/sysconfig/network-scripts/ifcfg-eth0 TYPE=Ethernet BOOTPROTO=static DEFROUTE=yes NAME=eth0 #UUID=408326bb-7565-4aa5-b156-c89a0ba839d2 HWADDR=00:0c:29:7a:1e:16 DEVICE=eth0 ONBOOT=yes IPADDR=172.16.18.188 NETMASK=255.255.255.0 GATEWAY=172.16.18.1 DNS=219.141.136.10

3、reboot