Hi EV Sus,
In centos 7 this is how you can configured static ip to the system.
```
Create a file named /etc/sysconfig/network-scripts/ifcfg-eth0 as follows:
DEVICE=eth0
BOOTPROTO=none
ONBOOT=yes
PREFIX=24
IPADDR=192.168.2.203
Restart network service: systemctl restart network
```
for more information check this [link](https://www.cyberciti.biz/faq/howto-setting-rhel7-centos-7-static-ip-configuration/)
thanks and regards
Mohit Mali