vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=XX:XX:XX:XX:XX
TYPE=Ethernet
UUID=XXXXXX-XXXX-XXXX-XXXX-XXXXXXXX
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.X.X
NETMASK=255.255.255.0
GATEWAY=192.168.X.X
DNS1=114.114.114.114
DNS2=8.8.8.8
IPV6INIT=no
ARPCHECK=no