edit file /etc/sysconfig/network-script/ifcfg-eth0
[root@master ~]# more /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
#HWADDR=B4:B5:2F:AF:4D:BD
#TYPE=Ethernet
#UUID=12197d2c-34a7-42b3-ae04-cdfb00e7ef25
#ONBOOT=no
#NM_CONTROLLED=yes
#BOOTPROTO=dhcp
IPADDR=192.168.17.11
BROADCAST=192.168.17.0
NETMASK=255.255.255.0
GATEWAY=192.168.17.1
BOOTPROTO=static
ONBOOT=yes