CentOS7网卡名修改
CentOS7网卡名修改CentOS7网卡名与CentOS6不同，然而7的早期版本与最新的版本的网卡名又有所不同，在生产环境中，为了实现自动化管理，首先要实现全部标准化，所以要将网卡名同一设置为和CentOS6相同的ethN的格式，具体的修改方法如下：
1.首先修改/etc/default/grub文件,在GRUB_CMDLINE_LINUX行最后添加net.ifnames=0
# vim /etc/default/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="crashkernel=auto rhgb quiet net.ifnames=0"
GRUB_DISABLE_RECOVERY="true"
2.使用grub2-mkconfig命令重新生成/boot/grub2/grub.cfg文件
# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-957.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-957.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-30905c0f8bf344f4af5b53a826370629
Found initrd image: /boot/initramfs-0-rescue-30905c0f8bf344f4af5b53a826370629.img
done
3.重启后主机网卡已改为传统的ethN模式
# ifconfig
eth0: flags=4163mtu 1500
inet 192.168.172.130netmask 255.255.255.0broadcast 192.168.172.255
inet6 fe80::68e7:2a55:44f4:593prefixlen 64scopeid 0x20
ether 00:0c:29:63:21:a6txqueuelen 1000(Ethernet)
RX packets 4bytes 806 (806.0 B)
RX errors 0dropped 0overruns 0frame 0
TX packets 37bytes 5389 (5.2 KiB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
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