How to Configure Centos Network?

You can configure the network on your Linux / Centos servers by following the steps below.

Remember, you must login as "root" for all commands.

1 - We reach the directory where the network files are located

cd /etc/sysconfig/network-script/

Enter ↵

2 - We list our network scripts

11

Enter ↵

3 - File with network settings that are automatically created when you install your operating system

vi ifcfg-eth0

Enter ↵

4 - Network Settings

DEVICE=eth0

HWADDR=//It will come automatically

TYPE=Ethernet

UUID=//It will come automatically

ONBOOT=Yes

NM_CONTROLLED=yes

BOOTPROTO=static

NETMASK=//Enter your Network Netmask

IPADDR=//Enter the IP address you will use on your server (from your current IP block)

DEFROUTE=yes

PEERDNS=yes

PEERROUTES=yes

GATEWAY=//Enter your network output IP

DNS1=8.8.8.8 //Google DNS1

DNS2=8.8.4.4 //Google DNS2

5 - We restart our network services

service network restart

Enter ↵

6 - After the restart, we open the following file and check the nameserver(DNS) definition.

vi /etc/resolv.conf

Enter ↵

Must be;

nameserver 8.8.8.8

nameserver 8.8.4.4

7 -  We perform our tests by pinging any IP address

ping 94.103.23.23

Enter ↵

8 - Now we can update our system

yum update

Enter ↵

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