Configure static IP address on Centos 6.3 or Redhat 6.3 RHEL

 How to configure static IP address on Centos 6.3 or Redhat 6.3 RHEL

1. Default network configuration on Centos or RedHat for eth0 (dhcp)

vi /etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=”eth0″
BOOTPROTO=”dhcp”
HWADDR=”00:0C:29:55:52:41″
IPV6INIT=”yes”
NM_CONTROLLED=”yes”
ONBOOT=”yes”
TYPE=”Ethernet”
UUID=”67ffccb8-2408-4ecb-bdd9-baf81f4911af”

2.  Configure static IP Address

vi /etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=”eth0″
BOOTPROTO=”static”
HWADDR=”00:0C:29:55:52:41″
IPV6INIT=”yes”
NM_CONTROLLED=”yes”
ONBOOT=”yes”
TYPE=”Ethernet”
IPADDR=192.168.0.112
NETMASK=255.255.255.0
UUID=”67ffccb8-2408-4ecb-bdd9-baf81f4911af”

3. Configure Default gateway and hostname

vi /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=Centos6.3
GATEWAY=192.168.0.1

4. Restart network

[root@Centos6 ~]# /etc/init.d/network restart
Shutting down interface eth0: Device state: 3 (disconnected)
[ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Active connection state: activating
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/4
state: activated
Connection activated
[ OK ]
[root@Centos6 ~]#

5. Configure DNS Server

[root@Centos6 ~]# cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 8.8.4.4
# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com
[root@Centos6 ~]#

That’s all. Thanks for using IThelpblog.com

 

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