Edit file /etc/default/grub and Search for the line “GRUB_CMDLINE_LINUX” and append the following: “net.ifnames=0 biosdevname=0″ after auto rhgb quiet .
Will look like this:
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="rd.lvm.lv=centos/swap vconsole.font=latarcyrheb-sun16 rd.lvm.lv=centos/root crashkernel=auto vconsole.keymap=us rhgb quiet net.ifnames=0 biosdevname=0"
GRUB_DISABLE_RECOVERY="true"
Now create new configuration based on the current running system
# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-514.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-514.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-e95ce9b9214e4b8dab09feac2cdf5004
Found initrd image: /boot/initramfs-0-rescue-e95ce9b9214e4b8dab09feac2cdf5004.img
done
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-514.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-514.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-e95ce9b9214e4b8dab09feac2cdf5004
Found initrd image: /boot/initramfs-0-rescue-e95ce9b9214e4b8dab09feac2cdf5004.img
done
Rename old network configuration file and change DEVICE name ens33 to eth0 in ifcfg-eth0
# mv /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-eth0
Reboot system and check the status
# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.35.150 netmask 255.255.255.0 broadcast 192.168.35.255
inet6 fe80::808:fded:4e90:3dad prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:fc:2e:d1 txqueuelen 1000 (Ethernet)
RX packets 51 bytes 6126 (5.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 82 bytes 14020 (13.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.35.150 netmask 255.255.255.0 broadcast 192.168.35.255
inet6 fe80::808:fded:4e90:3dad prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:fc:2e:d1 txqueuelen 1000 (Ethernet)
RX packets 51 bytes 6126 (5.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 82 bytes 14020 (13.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0