After installing CentOS you will wan’t to most likely configure a static ip address. CentOS is mostly used as Server for some purpose be it hosting your website or running a gaming server. So whatever the case you will want to give it a static IP address. By default CentOS interface is configured to receive IP from DHCP server if this is turned on. Here I will show you how to configure static IP address in CentOS system.
1. You will need to edit the file for your Ethernet connection under /etc/sysconfig/network-scripts. We will edit this file and add the correct settings. You will need to use an editor like vi, vim, nano, pico etc. In this example I will use nano editor. After you start your server running CentOS enter root user credentials and get in. Type the command, # nano /etc/sysconfig/network-scripts/ifcfg-eth0 it will look something like this
2. The settings may look like this
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3. Now change the configurations to something like this
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4. Save the file in whichever editor your using.
5. Now restart the network services by issuing the command,
[root@hostname~]# service network restart
6. To verify the IP address issue the following command,
[root@hostname~]# ifconfig
7. Next you will want to configure your DNS settings we’ll need to edit the DNS file so we type the command thing is to edit /etc/recolv.conf. Using nano editor to configure DNS information, /etc/recolv.conf. Using nano editor to configure DNS information,
[root@hostname~]# nano /etc/resolv.conf
8. After you save this file, you’ll want to test your connection with a simple command like ping www.bbc.co.uk which should come back with something like this below.
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You should be all setup and ready.