一、网卡配置文件名称重命名为eth0

[root@root ~]# cd /etc/sysconfig/network-scripts/
[root@Jaking11 network-scripts]# ls
ifcfg-ens33  ifdown-ppp       ifup-eth     ifup-sit
ifcfg-lo     ifdown-routes    ifup-ippp    ifup-Team
ifdown       ifdown-sit       ifup-ipv6    ifup-TeamPort
ifdown-bnep  ifdown-Team      ifup-isdn    ifup-tunnel
ifdown-eth   ifdown-TeamPort  ifup-plip    ifup-wireless
ifdown-ippp  ifdown-tunnel    ifup-plusb   init.ipv6-global
ifdown-ipv6  ifup             ifup-post    network-functions
ifdown-isdn  ifup-aliases     ifup-ppp     network-functions-ipv6
ifdown-post  ifup-bnep        ifup-routes
[root@root network-scripts]# mv ifcfg-ens33 ifcfg-eth0

此功能通过/etc/default/grub文件来控制，要禁用此功能，在文件中加入   "net.ifnames=0 biosdevname=0"

[root@rootnetwork-scripts]# 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 rd.lvm.lv=centos/root rd.lvm.lv=centos/swap
 rhgb quiet net.ifnames=0 biosdevname=0"
GRUB_DISABLE_RECOVERY="true"

在/etc/udev/rules.d目录中创建一个网卡规则70-persistent-net.rules文件，在文件中写入以下参数：

SUBSYSTEM=="net",ACTION=="add",DRIVERS=="?*",ATTR{address}=="需要修改名称的网卡MAC地址",ATTR｛type｝=="1" ,KERNEL=="eth*",NAME="eth0"

参考配置：

[root@root rules.d]# vim 70-persistent-net.rules
SUBSYSTEM=="net",ACTION=="add",DRIVERS=="?*",ATTR{address}=="00:50:56:29:0e:ae",
ATTR｛type｝=="1" ,KERNEL=="eth*",NAME="eth0"

[root@root rules.d]# 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-fe49b659ccb940fa8d260a5897c0b08a
Found initrd image: /boot/initramfs-0-rescue-fe49b659ccb940fa8d260a5897c0b08a.img
done