Edit /etc/default/grub file and add net.ifnames=0 biosdevname=0 at the end of the GRUB_CMDLINE_LINUX variable

GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=rootvg/rootlv rd.lvm.lv=rootvg/swaplv rd.lvm.lv=rootvg/usrlv rhgb quiet net.ifnames=0 biosdevname=0"
 

Test the new config

grub2-mkconfig 


Update the grub config file

grub2-mkconfig -o /boot/grub2/grub.cfg
 

Rename  the old ifcfg-en…. to ifcg-eth0  

mv  /etc/sysconfig/network-scripts/ifcfg-eno16780032 /etc/sysconfig/network-scripts/ifcfg-eth0


Change the NAME= and DEVICE=  to  eth0  in ifcfg-eth0

vi /etc/sysconfig/network-scripts/ifcfg-eth0