Bind Additional IPs to NIC - CentOS & Apache

This article explains the process of binding multiple IP addresses to the Network Interface Card (NIC) on a CentOS Server with Apache Web Server. This process is a helpful tool for a number of applications, notably Apache-based website hosting

We only bind the primary server IP as our clients have many use-case for how they like to use their IP's. In this demonstration, you would need to add the additional IP's to the server by editing the following location:

/etc/sysconfig/network-scripts/ifcfg-eth0-range0

Begin by accessing your server via SSH and running the following command:

# cd /etc/sysconfig/network-scripts/ifcfg-eth0-range0

Now copy this file to create the virtual interfaces for additional IP addresses, as needed

# cp ifcfg-eth0 ifcfg-eth0:0
# cp ifcfg-eth0 ifcfg-eth0:1
# cp ifcfg-eth0 ifcfg-eth0:2
# cp ifcfg-eth0 ifcfg-eth0:3
# cp ifcfg-eth0 ifcfg-eth0:4

Open the file “ifcfg-eth0:0“ to view the contents:

DEVICE="eth0:0"
BOOTPROTO=static
ONBOOT=yes
TYPE="Ethernet"
IPADDR=216.245.203.194
NETMASK=255.255.255.248
GATEWAY=216.245.203.192
HWADDR=00:0C:29:28:FD:4C

Simply edit the subsequent virtual interfaces, following this formula, to bind the additional IPs to the NIC (Only Changes need to be made to the DEVICE and IPADDR assignments):

DEVICE="eth0:1"
BOOTPROTO=static
ONBOOT=yes
TYPE="Ethernet"
IPADDR=216.245.203.195
NETMASK=255.255.255.248
GATEWAY=216.245.203.192
HWADDR=00:0C:29:28:FD:4C



DEVICE="eth0:2"
BOOTPROTO=static
ONBOOT=yes TYPE="Ethernet"
IPADDR=216.245.203.196
NETMASK=255.255.255.248
GATEWAY=216.245.203.192
HWADDR=00:0C:29:28:FD:4C

Restart the network to finalize the process and ensure new interfaces are started cleanly:

# service network restart

You have now successfully added the additional server IPs to the public NIC and they are ready for use.

  • ip address, network configuration, server setup, centos
  • 5 Users Found This Useful
Was this answer helpful?

Related Articles

 How to Upgrade a Dedicated Server

This article demonstrates the steps for upgrading your dedicated server package.Changing business...

 How to Install and Run MTR Report

In this article, we will demonstrate how to install MTR on a CentOS server. MTR is a powerful...

 Reload Operating System of Dedicated Server

This article will provide instructions for reloading the operating system of your Rad Web Hosting...

 Forcefully Delete an IP Address from SolusVM

If at any point you find you have an orphaned ipaddress, you can delete it by running the...

 Do You Offer a Hardware Firewall Solution?

Yes, we have a very limited selection of hardware firewalls available. We appreciate the specific...