有時候新裝的CentOS7系統網卡默認名稱是eno16777736，為方便改成傳統eth0

修改網絡配置文件

# cd /etc/sysconfig/network-script/
# vim ifcfg-eno16777736
#修改NAME和DEVICE為eth0
# mv ifcfg-eno16777736  ifcfg-eth0

修改grub參數

# vim /etc/default/grub
#添加net.ifnames=0 biosdevname=0
GRUB_TIMEOUT=3
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 net.ifnames=0 biosdevname=0 quiet ipv6.disable=1"
GRUB_DISABLE_RECOVERY="true"

重新加載grub，重啟生效

# grub2-mkconfig -o /boot/grub2/grub.cfg
# shutdown 
 
-r now

CentOS7修改網卡名稱，禁用ipv6