# ip addr (Comando para listar configuração de rede)
# vi /etc/sysconfig/network-scripts/ifcfg-xxxxxx (editando o arquivo, substitua o xxxxxx pelo nome da interface)
TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.66
NETMASK=255.255.255.0
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=enp0s3
UUID=610254c7-6b51-48de-9e5b-c07dff952408
DEVICE=enp0s3
ONBOOT=yes
# vi /etc/hostname
# vi /etc/sysconfig/network (configurar o Gateway)
# Created by anaconda
NETWORKING=yes
HOSTNAME=nomedoservidor
GATEWAY=192.168.1.1
# vi /etc/resolv.conf (Configurar o DNS)
# Generated by NetworkManager
search localdomain (se a rede possuir um domínio)
nameserver 8.8.8.8
nameserver 8.8.4.4
# /etc/init.d/network restart (reinicar o serviço de rede)
Very informative post! This post has a lot of information here that can help me a lot.