Linux - Setting a Static IP (Redhat / CentOS Servers)

1. Configure eth0:

[root@centos63 ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE="eth0"
BOOTPROTO="static"
HWADDR="xx:xx:xx:xx:xx:xx"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
UUID="xxxxxxxx-05a0-4adf-84fd-850aca6521c7"
IPADDR=192.168.1.54
NETMASK=255.255.255.0

2. Configure Default gateway:

[root@centos63 ~]# vi /etc/sysconfig/network

NETWORKING=yes
HOSTNAME=centos63.ehowstuff.local
GATEWAY=192.168.1.1

3. Restart Network interface:

[root@centos63 ~]# service network restart
Shutting down interface eth0:                              [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:                                [  OK  ]

4. Configure DNS server :

[root@centos63 ~]# vi /etc/resolv.conf

nameserver 8.8.8.8
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